<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Predefined Constants</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="image.resources.html">Resource Types</a></div> <div class="next" style="text-align: right; float: right;"><a href="image.examples.html">Examples</a></div> <div class="up"><a href="book.image.html">GD</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="image.constants" class="appendix"> <h1>Predefined Constants</h1> <p class="simpara"> The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime. </p> <dl> <dt id="constant.gd-version"> <strong><code>GD_VERSION</code></strong> (<span class="type"><a href="language.types.string.html" class="type string">string</a></span>) </dt> <dd> <span class="simpara"> The GD version PHP was compiled against. (Available as of PHP 5.2.4) </span> </dd> <dt id="constant.gd-major-version"> <strong><code>GD_MAJOR_VERSION</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> The GD major version PHP was compiled against. (Available as of PHP 5.2.4) </span> </dd> <dt id="constant.gd-minor-version"> <strong><code>GD_MINOR_VERSION</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> The GD minor version PHP was compiled against. (Available as of PHP 5.2.4) </span> </dd> <dt id="constant.gd-release-version"> <strong><code>GD_RELEASE_VERSION</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> The GD release version PHP was compiled against. (Available as of PHP 5.2.4) </span> </dd> <dt id="constant.gd-extra-version"> <strong><code>GD_EXTRA_VERSION</code></strong> (<span class="type"><a href="language.types.string.html" class="type string">string</a></span>) </dt> <dd> <span class="simpara"> The GD "extra" version (beta/rc..) PHP was compiled against. (Available as of PHP 5.2.4) </span> </dd> <dt id="constant.gd-bundled"> <strong><code>GD_BUNDLED</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> When the bundled version of GD is used this is 1 otherwise its set to 0. </span> </dd> <dt id="constant.img-bmp"> <strong><code>IMG_BMP</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Used as a return value by <span class="function"><a href="function.imagetypes.html" class="function">imagetypes()</a></span> </span> </dd> <dt id="constant.img-gif"> <strong><code>IMG_GIF</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Used as a return value by <span class="function"><a href="function.imagetypes.html" class="function">imagetypes()</a></span> </span> </dd> <dt id="constant.img-jpg"> <strong><code>IMG_JPG</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Used as a return value by <span class="function"><a href="function.imagetypes.html" class="function">imagetypes()</a></span> </span> </dd> <dt id="constant.img-jpeg"> <strong><code>IMG_JPEG</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Used as a return value by <span class="function"><a href="function.imagetypes.html" class="function">imagetypes()</a></span> </span> <blockquote class="note"><p><strong class="note">Note</strong>: <p class="para"> This constant has the same value as <strong><code>IMG_JPG</code></strong> </p> </p></blockquote> </dd> <dt id="constant.img-png"> <strong><code>IMG_PNG</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Used as a return value by <span class="function"><a href="function.imagetypes.html" class="function">imagetypes()</a></span> </span> </dd> <dt id="constant.img-wbmp"> <strong><code>IMG_WBMP</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Used as a return value by <span class="function"><a href="function.imagetypes.html" class="function">imagetypes()</a></span> </span> </dd> <dt id="constant.img-xpm"> <strong><code>IMG_XPM</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Used as a return value by <span class="function"><a href="function.imagetypes.html" class="function">imagetypes()</a></span> </span> </dd> <dt id="constant.img-webp"> <strong><code>IMG_WEBP</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Used as a return value by <span class="function"><a href="function.imagetypes.html" class="function">imagetypes()</a></span> </span> <span class="simpara"> Available as of PHP 5.6.25 and PHP 7.0.10, respectively. </span> </dd> <dt id="constant.img-color-tiled"> <strong><code>IMG_COLOR_TILED</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special color option which can be used instead of a color allocated with <span class="function"><a href="function.imagecolorallocate.html" class="function">imagecolorallocate()</a></span> or <span class="function"><a href="function.imagecolorallocatealpha.html" class="function">imagecolorallocatealpha()</a></span>. </span> </dd> <dt id="constant.img-color-styled"> <strong><code>IMG_COLOR_STYLED</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special color option which can be used instead of a color allocated with <span class="function"><a href="function.imagecolorallocate.html" class="function">imagecolorallocate()</a></span> or <span class="function"><a href="function.imagecolorallocatealpha.html" class="function">imagecolorallocatealpha()</a></span>. </span> </dd> <dt id="constant.img-color-brushed"> <strong><code>IMG_COLOR_BRUSHED</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special color option which can be used instead of a color allocated with <span class="function"><a href="function.imagecolorallocate.html" class="function">imagecolorallocate()</a></span> or <span class="function"><a href="function.imagecolorallocatealpha.html" class="function">imagecolorallocatealpha()</a></span>. </span> </dd> <dt id="constant.img-color-styledbrushed"> <strong><code>IMG_COLOR_STYLEDBRUSHED</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special color option which can be used instead of a color allocated with <span class="function"><a href="function.imagecolorallocate.html" class="function">imagecolorallocate()</a></span> or <span class="function"><a href="function.imagecolorallocatealpha.html" class="function">imagecolorallocatealpha()</a></span>. </span> </dd> <dt id="constant.img-color-transparent"> <strong><code>IMG_COLOR_TRANSPARENT</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special color option which can be used instead of a color allocated with <span class="function"><a href="function.imagecolorallocate.html" class="function">imagecolorallocate()</a></span> or <span class="function"><a href="function.imagecolorallocatealpha.html" class="function">imagecolorallocatealpha()</a></span>. </span> </dd> <dt id="constant.img-affine-translate"> <strong><code>IMG_AFFINE_TRANSLATE</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> An affine transformation type constant used by the <span class="function"><a href="function.imageaffinematrixget.html" class="function">imageaffinematrixget()</a></span> function. </span> </dd> <dt id="constant.img-affine-scale"> <strong><code>IMG_AFFINE_SCALE</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> An affine transformation type constant used by the <span class="function"><a href="function.imageaffinematrixget.html" class="function">imageaffinematrixget()</a></span> function. </span> </dd> <dt id="constant.img-affine-rotate"> <strong><code>IMG_AFFINE_ROTATE</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> An affine transformation type constant used by the <span class="function"><a href="function.imageaffinematrixget.html" class="function">imageaffinematrixget()</a></span> function. </span> </dd> <dt id="constant.img-affine-shear-horizontal"> <strong><code>IMG_AFFINE_SHEAR_HORIZONTAL</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> An affine transformation type constant used by the <span class="function"><a href="function.imageaffinematrixget.html" class="function">imageaffinematrixget()</a></span> function. </span> </dd> <dt id="constant.img-affine-shear-vertical"> <strong><code>IMG_AFFINE_SHEAR_VERTICAL</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> An affine transformation type constant used by the <span class="function"><a href="function.imageaffinematrixget.html" class="function">imageaffinematrixget()</a></span> function. </span> </dd> <dt id="constant.img-arc-rounded"> <strong><code>IMG_ARC_ROUNDED</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> A style constant used by the <span class="function"><a href="function.imagefilledarc.html" class="function">imagefilledarc()</a></span> function. </span> <blockquote class="note"><p><strong class="note">Note</strong>: <p class="para"> This constant has the same value as <strong><code>IMG_ARC_PIE</code></strong> </p> </p></blockquote> </dd> <dt id="constant.img-arc-pie"> <strong><code>IMG_ARC_PIE</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> A style constant used by the <span class="function"><a href="function.imagefilledarc.html" class="function">imagefilledarc()</a></span> function. </span> </dd> <dt id="constant.img-arc-chord"> <strong><code>IMG_ARC_CHORD</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> A style constant used by the <span class="function"><a href="function.imagefilledarc.html" class="function">imagefilledarc()</a></span> function. </span> </dd> <dt id="constant.img-arc-nofill"> <strong><code>IMG_ARC_NOFILL</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> A style constant used by the <span class="function"><a href="function.imagefilledarc.html" class="function">imagefilledarc()</a></span> function. </span> </dd> <dt id="constant.img-arc-edged"> <strong><code>IMG_ARC_EDGED</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> A style constant used by the <span class="function"><a href="function.imagefilledarc.html" class="function">imagefilledarc()</a></span> function. </span> </dd> <dt id="constant.img-gd2-raw"> <strong><code>IMG_GD2_RAW</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> A type constant used by the <span class="function"><a href="function.imagegd2.html" class="function">imagegd2()</a></span> function. </span> </dd> <dt id="constant.img-gd2-compressed"> <strong><code>IMG_GD2_COMPRESSED</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> A type constant used by the <span class="function"><a href="function.imagegd2.html" class="function">imagegd2()</a></span> function. </span> </dd> <dt id="constant.img-effect-replace"> <strong><code>IMG_EFFECT_REPLACE</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Alpha blending effect used by the <span class="function"><a href="function.imagelayereffect.html" class="function">imagelayereffect()</a></span> function. </span> </dd> <dt id="constant.img-effect-alphablend"> <strong><code>IMG_EFFECT_ALPHABLEND</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Alpha blending effect used by the <span class="function"><a href="function.imagelayereffect.html" class="function">imagelayereffect()</a></span> function. </span> </dd> <dt id="constant.img-effect-normal"> <strong><code>IMG_EFFECT_NORMAL</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Alpha blending effect used by the <span class="function"><a href="function.imagelayereffect.html" class="function">imagelayereffect()</a></span> function. </span> </dd> <dt id="constant.img-effect-overlay"> <strong><code>IMG_EFFECT_OVERLAY</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Alpha blending effect used by the <span class="function"><a href="function.imagelayereffect.html" class="function">imagelayereffect()</a></span> function. </span> </dd> <dt id="constant.img-effect-multiply"> <strong><code>IMG_EFFECT_MULTIPLY</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Alpha blending effect used by the <span class="function"><a href="function.imagelayereffect.html" class="function">imagelayereffect()</a></span> function. </span> </dd> <dt id="constant.img-filter-negate"> <strong><code>IMG_FILTER_NEGATE</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special GD filter used by the <span class="function"><a href="function.imagefilter.html" class="function">imagefilter()</a></span> function. </span> </dd> <dt id="constant.img-filter-grayscale"> <strong><code>IMG_FILTER_GRAYSCALE</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special GD filter used by the <span class="function"><a href="function.imagefilter.html" class="function">imagefilter()</a></span> function. </span> </dd> <dt id="constant.img-filter-brightness"> <strong><code>IMG_FILTER_BRIGHTNESS</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special GD filter used by the <span class="function"><a href="function.imagefilter.html" class="function">imagefilter()</a></span> function. </span> </dd> <dt id="constant.img-filter-contrast"> <strong><code>IMG_FILTER_CONTRAST</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special GD filter used by the <span class="function"><a href="function.imagefilter.html" class="function">imagefilter()</a></span> function. </span> </dd> <dt id="constant.img-filter-colorize"> <strong><code>IMG_FILTER_COLORIZE</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special GD filter used by the <span class="function"><a href="function.imagefilter.html" class="function">imagefilter()</a></span> function. </span> </dd> <dt id="constant.img-filter-edgedetect"> <strong><code>IMG_FILTER_EDGEDETECT</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special GD filter used by the <span class="function"><a href="function.imagefilter.html" class="function">imagefilter()</a></span> function. </span> </dd> <dt id="constant.img-filter-gaussian-blur"> <strong><code>IMG_FILTER_GAUSSIAN_BLUR</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special GD filter used by the <span class="function"><a href="function.imagefilter.html" class="function">imagefilter()</a></span> function. </span> </dd> <dt id="constant.img-filter-selective-blur"> <strong><code>IMG_FILTER_SELECTIVE_BLUR</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special GD filter used by the <span class="function"><a href="function.imagefilter.html" class="function">imagefilter()</a></span> function. </span> </dd> <dt id="constant.img-filter-emboss"> <strong><code>IMG_FILTER_EMBOSS</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special GD filter used by the <span class="function"><a href="function.imagefilter.html" class="function">imagefilter()</a></span> function. </span> </dd> <dt id="constant.img-filter-mean-removal"> <strong><code>IMG_FILTER_MEAN_REMOVAL</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special GD filter used by the <span class="function"><a href="function.imagefilter.html" class="function">imagefilter()</a></span> function. </span> </dd> <dt id="constant.img-filter-smooth"> <strong><code>IMG_FILTER_SMOOTH</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special GD filter used by the <span class="function"><a href="function.imagefilter.html" class="function">imagefilter()</a></span> function. </span> </dd> <dt id="constant.img-filter-pixelate"> <strong><code>IMG_FILTER_PIXELATE</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Special GD filter used by the <span class="function"><a href="function.imagefilter.html" class="function">imagefilter()</a></span> function. </span> <span class="simpara"> (Available as of PHP 5.3.0) </span> </dd> <dt id="constant.imagetype-gif"> <strong><code>IMAGETYPE_GIF</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-jpeg"> <strong><code>IMAGETYPE_JPEG</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-jpeg2000"> <strong><code>IMAGETYPE_JPEG2000</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-png"> <strong><code>IMAGETYPE_PNG</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-swf"> <strong><code>IMAGETYPE_SWF</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-psd"> <strong><code>IMAGETYPE_PSD</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-bmp"> <strong><code>IMAGETYPE_BMP</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-wbmp"> <strong><code>IMAGETYPE_WBMP</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-xbm"> <strong><code>IMAGETYPE_XBM</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-tiff-ii"> <strong><code>IMAGETYPE_TIFF_II</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-tiff-mm"> <strong><code>IMAGETYPE_TIFF_MM</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-iff"> <strong><code>IMAGETYPE_IFF</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-jb2"> <strong><code>IMAGETYPE_JB2</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-jpc"> <strong><code>IMAGETYPE_JPC</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-jp2"> <strong><code>IMAGETYPE_JP2</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-jpx"> <strong><code>IMAGETYPE_JPX</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-swc"> <strong><code>IMAGETYPE_SWC</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> </dd> <dt id="constant.imagetype-ico"> <strong><code>IMAGETYPE_ICO</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> <span class="simpara"> (Available as of PHP 5.3.0) </span> </dd> <dt id="constant.imagetype-webp"> <strong><code>IMAGETYPE_WEBP</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> Image type constant used by the <span class="function"><a href="function.image-type-to-mime-type.html" class="function">image_type_to_mime_type()</a></span> and <span class="function"><a href="function.image-type-to-extension.html" class="function">image_type_to_extension()</a></span> functions. </span> <span class="simpara"> (Available as of PHP 7.1.0) </span> </dd> <dt id="constant.png-no-filter"> <strong><code>PNG_NO_FILTER</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> A special PNG filter, used by the <span class="function"><a href="function.imagepng.html" class="function">imagepng()</a></span> function. </span> </dd> <dt id="constant.png-filter-none"> <strong><code>PNG_FILTER_NONE</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> A special PNG filter, used by the <span class="function"><a href="function.imagepng.html" class="function">imagepng()</a></span> function. </span> </dd> <dt id="constant.png-filter-sub"> <strong><code>PNG_FILTER_SUB</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> A special PNG filter, used by the <span class="function"><a href="function.imagepng.html" class="function">imagepng()</a></span> function. </span> </dd> <dt id="constant.png-filter-up"> <strong><code>PNG_FILTER_UP</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> A special PNG filter, used by the <span class="function"><a href="function.imagepng.html" class="function">imagepng()</a></span> function. </span> </dd> <dt id="constant.png-filter-avg"> <strong><code>PNG_FILTER_AVG</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> A special PNG filter, used by the <span class="function"><a href="function.imagepng.html" class="function">imagepng()</a></span> function. </span> </dd> <dt id="constant.png-filter-paeth"> <strong><code>PNG_FILTER_PAETH</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> A special PNG filter, used by the <span class="function"><a href="function.imagepng.html" class="function">imagepng()</a></span> function. </span> </dd> <dt id="constant.png-all-filters"> <strong><code>PNG_ALL_FILTERS</code></strong> (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) </dt> <dd> <span class="simpara"> A special PNG filter, used by the <span class="function"><a href="function.imagepng.html" class="function">imagepng()</a></span> function. </span> </dd> <dt id="constant.img-flip-vertical"> <strong><code>IMG_FLIP_VERTICAL</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imageflip.html" class="function">imageflip()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-flip-horizontal"> <strong><code>IMG_FLIP_HORIZONTAL</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imageflip.html" class="function">imageflip()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-flip-both"> <strong><code>IMG_FLIP_BOTH</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imageflip.html" class="function">imageflip()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-bell"> <strong><code>IMG_BELL</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-bessel"> <strong><code>IMG_BESSEL</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-bilinear-fixed"> <strong><code>IMG_BILINEAR_FIXED</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-bicubic"> <strong><code>IMG_BICUBIC</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-bicubic-fixed"> <strong><code>IMG_BICUBIC_FIXED</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-blackman"> <strong><code>IMG_BLACKMAN</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-box"> <strong><code>IMG_BOX</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-bspline"> <strong><code>IMG_BSPLINE</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-catmullrom"> <strong><code>IMG_CATMULLROM</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-gaussian"> <strong><code>IMG_GAUSSIAN</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-generalized-cubic"> <strong><code>IMG_GENERALIZED_CUBIC</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-hermite"> <strong><code>IMG_HERMITE</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-hamming"> <strong><code>IMG_HAMMING</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-hanning"> <strong><code>IMG_HANNING</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-mitchell"> <strong><code>IMG_MITCHELL</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-power"> <strong><code>IMG_POWER</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-quadratic"> <strong><code>IMG_QUADRATIC</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-sinc"> <strong><code>IMG_SINC</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-nearest-neighbour"> <strong><code>IMG_NEAREST_NEIGHBOUR</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-weighted4"> <strong><code>IMG_WEIGHTED4</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> <dt id="constant.img-triangle"> <strong><code>IMG_TRIANGLE</code></strong> (<span class="type"><a href="language.types.integer.html" class="type int">int</a></span>) </dt> <dd> <span class="simpara"> Used together with <span class="function"><a href="function.imagesetinterpolation.html" class="function">imagesetinterpolation()</a></span>, available as of PHP 5.5.0. </span> </dd> </dl> </div> <hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="image.resources.html">Resource Types</a></div> <div class="next" style="text-align: right; float: right;"><a href="image.examples.html">Examples</a></div> <div class="up"><a href="book.image.html">GD</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>