<!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>Flips an image using a given mode</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imagefilter.html">imagefilter</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.imagefontheight.html">imagefontheight</a></div> <div class="up"><a href="ref.image.html">GD and Image Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.imageflip" class="refentry"> <div class="refnamediv"> <h1 class="refname">imageflip</h1> <p class="verinfo">(PHP 5 >= 5.5.0)</p><p class="refpurpose"><span class="refname">imageflip</span> — <span class="dc-title">Flips an image using a given mode</span></p> </div> <div class="refsect1 description" id="refsect1-function.imageflip-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><strong>imageflip</strong></span> ( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$image</code></span> , <span class="methodparam"><span class="type">int</span> <code class="parameter">$mode</code></span> )</div> <p class="para rdfs-comment"> Flips the <em><code class="parameter">image</code></em> image using the given <em><code class="parameter">mode</code></em>. </p> </div> <div class="refsect1 parameters" id="refsect1-function.imageflip-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter"> image</code></em></span><dd> <p class="para">An image resource, returned by one of the image creation functions, such as <span class="function"><a href="function.imagecreatetruecolor.html" class="function">imagecreatetruecolor()</a></span>.</p></dd> </dt> <dt> <span class="term"><em><code class="parameter">mode</code></em></span> <dd> <p class="para"> Flip mode, this can be one of the <strong><code>IMG_FLIP_*</code></strong> constants: </p> <p class="para"> <table class="doctable informaltable"> <thead> <tr> <th>Constant</th> <th>Meaning</th> </tr> </thead> <tbody class="tbody"> <tr> <td><strong><code>IMG_FLIP_HORIZONTAL</code></strong></td> <td> Flips the image horizontally. </td> </tr> <tr> <td><strong><code>IMG_FLIP_VERTICAL</code></strong></td> <td> Flips the image vertically. </td> </tr> <tr> <td><strong><code>IMG_FLIP_BOTH</code></strong></td> <td> Flips the image both horizontally and vertically. </td> </tr> </tbody> </table> </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.imageflip-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <strong><code>TRUE</code></strong> on success or <strong><code>FALSE</code></strong> on failure. </p> </div> <div class="refsect1 examples" id="refsect1-function.imageflip-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-3236"> <p><strong>Example #1 Flips an image vertically</strong></p> <div class="example-contents"><p> This example uses the <strong><code>IMG_FLIP_VERTICAL</code></strong> constant. </p></div> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// File<br /></span><span style="color: #0000BB">$filename </span><span style="color: #007700">= </span><span style="color: #DD0000">'phplogo.png'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// Content type<br /></span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">'Content-type: image/png'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Load<br /></span><span style="color: #0000BB">$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatefrompng</span><span style="color: #007700">(</span><span style="color: #0000BB">$filename</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Flip it vertically<br /></span><span style="color: #0000BB">imageflip</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">IMG_FLIP_VERTICAL</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Output<br /></span><span style="color: #0000BB">imagejpeg</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> <div class="example-contents"><p>The above example will output something similar to:</p></div> <div class="mediaobject"> <div class="imageobject"> <img src="images/21009b70229598c6a80eef8b45bf282b-imageflipvertical.png" alt="Output of example: Vertically flipped image" width="120" height="67" /> </div> </div> </div> </p> <p class="para"> <div class="example" id="example-3237"> <p><strong>Example #2 Flips the image horizontally</strong></p> <div class="example-contents"><p> This example uses the <strong><code>IMG_FLIP_HORIZONTAL</code></strong> constant. </p></div> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// File<br /></span><span style="color: #0000BB">$filename </span><span style="color: #007700">= </span><span style="color: #DD0000">'phplogo.png'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// Content type<br /></span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">'Content-type: image/png'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Load<br /></span><span style="color: #0000BB">$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatefrompng</span><span style="color: #007700">(</span><span style="color: #0000BB">$filename</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Flip it horizontally<br /></span><span style="color: #0000BB">imageflip</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">IMG_FLIP_HORIZONTAL</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Output<br /></span><span style="color: #0000BB">imagejpeg</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> <div class="example-contents"><p>The above example will output something similar to:</p></div> <div class="mediaobject"> <div class="imageobject"> <img src="images/21009b70229598c6a80eef8b45bf282b-imagefliphorizontal.png" alt="Output of example: Horizontally flipped image" width="120" height="67" /> </div> </div> </div> </p> </div> <div class="refsect1 notes" id="refsect1-function.imageflip-notes"> <h3 class="title">Notes</h3> <blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara">This function is only available if PHP is compiled with the bundled version of the GD library.</span></p></blockquote> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imagefilter.html">imagefilter</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.imagefontheight.html">imagefontheight</a></div> <div class="up"><a href="ref.image.html">GD and Image Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>