<!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>Give the bounding box of a text using TrueType fonts</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imagetruecolortopalette.html">imagetruecolortopalette</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.imagettftext.html">imagettftext</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.imagettfbbox" class="refentry"> <div class="refnamediv"> <h1 class="refname">imagettfbbox</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">imagettfbbox</span> — <span class="dc-title">Give the bounding box of a text using TrueType fonts</span></p> </div> <div class="refsect1 description" id="refsect1-function.imagettfbbox-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">array</span> <span class="methodname"><strong>imagettfbbox</strong></span> ( <span class="methodparam"><span class="type">float</span> <code class="parameter">$size</code></span> , <span class="methodparam"><span class="type">float</span> <code class="parameter">$angle</code></span> , <span class="methodparam"><span class="type">string</span> <code class="parameter">$fontfile</code></span> , <span class="methodparam"><span class="type">string</span> <code class="parameter">$text</code></span> )</div> <p class="para rdfs-comment"> This function calculates and returns the bounding box in pixels for a TrueType text. </p> </div> <div class="refsect1 parameters" id="refsect1-function.imagettfbbox-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">size</code></em></span> <dd> <p class="para"> The font size. <blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara"> In GD 1, this is measured in pixels. In GD 2, this is measured in points. </span> </p></blockquote> </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">angle</code></em></span> <dd> <p class="para"> Angle in degrees in which <em><code class="parameter">text</code></em> will be measured. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">fontfile</code></em></span> <dd> <p class="para"> The name of the TrueType font file (can be a URL). Depending on which version of the GD library that PHP is using, it may attempt to search for files that do not begin with a leading '/' by appending '.ttf' to the filename and searching along a library-defined font path. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">text</code></em></span> <dd> <p class="para"> The string to be measured. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.imagettfbbox-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> <span class="function"><strong>imagettfbbox()</strong></span> returns an array with 8 elements representing four points making the bounding box of the text on success and <strong><code>FALSE</code></strong> on error. <table class="doctable informaltable"> <thead> <tr> <th>key</th> <th>contents</th> </tr> </thead> <tbody class="tbody"> <tr> <td>0</td> <td>lower left corner, X position</td> </tr> <tr> <td>1</td> <td>lower left corner, Y position</td> </tr> <tr> <td>2</td> <td>lower right corner, X position</td> </tr> <tr> <td>3</td> <td>lower right corner, Y position</td> </tr> <tr> <td>4</td> <td>upper right corner, X position</td> </tr> <tr> <td>5</td> <td>upper right corner, Y position</td> </tr> <tr> <td>6</td> <td>upper left corner, X position</td> </tr> <tr> <td>7</td> <td>upper left corner, Y position</td> </tr> </tbody> </table> </p> <p class="para"> The points are relative to the <em class="emphasis">text</em> regardless of the <em><code class="parameter">angle</code></em>, so "upper left" means in the top left-hand corner seeing the text horizontally. </p> </div> <div class="refsect1 examples" id="refsect1-function.imagettfbbox-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-3285"> <p><strong>Example #1 <span class="function"><strong>imagettfbbox()</strong></span> example</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// Create a 300x150 image<br /></span><span style="color: #0000BB">$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatetruecolor</span><span style="color: #007700">(</span><span style="color: #0000BB">300</span><span style="color: #007700">, </span><span style="color: #0000BB">150</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$black </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$white </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">255</span><span style="color: #007700">, </span><span style="color: #0000BB">255</span><span style="color: #007700">, </span><span style="color: #0000BB">255</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Set the background to be white<br /></span><span style="color: #0000BB">imagefilledrectangle</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">299</span><span style="color: #007700">, </span><span style="color: #0000BB">299</span><span style="color: #007700">, </span><span style="color: #0000BB">$white</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Path to our font file<br /></span><span style="color: #0000BB">$font </span><span style="color: #007700">= </span><span style="color: #DD0000">'./arial.ttf'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// First we create our bounding box for the first text<br /></span><span style="color: #0000BB">$bbox </span><span style="color: #007700">= </span><span style="color: #0000BB">imagettfbbox</span><span style="color: #007700">(</span><span style="color: #0000BB">10</span><span style="color: #007700">, </span><span style="color: #0000BB">45</span><span style="color: #007700">, </span><span style="color: #0000BB">$font</span><span style="color: #007700">, </span><span style="color: #DD0000">'Powered by PHP ' </span><span style="color: #007700">. </span><span style="color: #0000BB">phpversion</span><span style="color: #007700">());<br /><br /></span><span style="color: #FF8000">// This is our cordinates for X and Y<br /></span><span style="color: #0000BB">$x </span><span style="color: #007700">= </span><span style="color: #0000BB">$bbox</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">] + (</span><span style="color: #0000BB">imagesx</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">) / </span><span style="color: #0000BB">2</span><span style="color: #007700">) - (</span><span style="color: #0000BB">$bbox</span><span style="color: #007700">[</span><span style="color: #0000BB">4</span><span style="color: #007700">] / </span><span style="color: #0000BB">2</span><span style="color: #007700">) - </span><span style="color: #0000BB">25</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$y </span><span style="color: #007700">= </span><span style="color: #0000BB">$bbox</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">] + (</span><span style="color: #0000BB">imagesy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">) / </span><span style="color: #0000BB">2</span><span style="color: #007700">) - (</span><span style="color: #0000BB">$bbox</span><span style="color: #007700">[</span><span style="color: #0000BB">5</span><span style="color: #007700">] / </span><span style="color: #0000BB">2</span><span style="color: #007700">) - </span><span style="color: #0000BB">5</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// Write it<br /></span><span style="color: #0000BB">imagettftext</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">10</span><span style="color: #007700">, </span><span style="color: #0000BB">45</span><span style="color: #007700">, </span><span style="color: #0000BB">$x</span><span style="color: #007700">, </span><span style="color: #0000BB">$y</span><span style="color: #007700">, </span><span style="color: #0000BB">$black</span><span style="color: #007700">, </span><span style="color: #0000BB">$font</span><span style="color: #007700">, </span><span style="color: #DD0000">'Powered by PHP ' </span><span style="color: #007700">. </span><span style="color: #0000BB">phpversion</span><span style="color: #007700">());<br /><br /></span><span style="color: #FF8000">// Create the next bounding box for the second text<br /></span><span style="color: #0000BB">$bbox </span><span style="color: #007700">= </span><span style="color: #0000BB">imagettfbbox</span><span style="color: #007700">(</span><span style="color: #0000BB">10</span><span style="color: #007700">, </span><span style="color: #0000BB">45</span><span style="color: #007700">, </span><span style="color: #0000BB">$font</span><span style="color: #007700">, </span><span style="color: #DD0000">'and Zend Engine ' </span><span style="color: #007700">. </span><span style="color: #0000BB">zend_version</span><span style="color: #007700">());<br /><br /></span><span style="color: #FF8000">// Set the cordinates so its next to the first text<br /></span><span style="color: #0000BB">$x </span><span style="color: #007700">= </span><span style="color: #0000BB">$bbox</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">] + (</span><span style="color: #0000BB">imagesx</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">) / </span><span style="color: #0000BB">2</span><span style="color: #007700">) - (</span><span style="color: #0000BB">$bbox</span><span style="color: #007700">[</span><span style="color: #0000BB">4</span><span style="color: #007700">] / </span><span style="color: #0000BB">2</span><span style="color: #007700">) + </span><span style="color: #0000BB">10</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$y </span><span style="color: #007700">= </span><span style="color: #0000BB">$bbox</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">] + (</span><span style="color: #0000BB">imagesy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">) / </span><span style="color: #0000BB">2</span><span style="color: #007700">) - (</span><span style="color: #0000BB">$bbox</span><span style="color: #007700">[</span><span style="color: #0000BB">5</span><span style="color: #007700">] / </span><span style="color: #0000BB">2</span><span style="color: #007700">) - </span><span style="color: #0000BB">5</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// Write it<br /></span><span style="color: #0000BB">imagettftext</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">10</span><span style="color: #007700">, </span><span style="color: #0000BB">45</span><span style="color: #007700">, </span><span style="color: #0000BB">$x</span><span style="color: #007700">, </span><span style="color: #0000BB">$y</span><span style="color: #007700">, </span><span style="color: #0000BB">$black</span><span style="color: #007700">, </span><span style="color: #0000BB">$font</span><span style="color: #007700">, </span><span style="color: #DD0000">'and Zend Engine ' </span><span style="color: #007700">. </span><span style="color: #0000BB">zend_version</span><span style="color: #007700">());<br /><br /></span><span style="color: #FF8000">// Output to browser<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: #0000BB">imagepng</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> </p> </div> <div class="refsect1 notes" id="refsect1-function.imagettfbbox-notes"> <h3 class="title">Notes</h3> <blockquote class="note"><p><strong class="note">Note</strong>: <p class="para"> This function requires both the GD library and the <a href="http://www.freetype.org/" class="link external">» FreeType</a> library. </p> </p></blockquote> </div> <div class="refsect1 seealso" id="refsect1-function.imagettfbbox-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"> <span class="function"><a href="function.imagettftext.html" class="function" rel="rdfs-seeAlso">imagettftext()</a> - Write text to the image using TrueType fonts</span></li> </ul> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imagetruecolortopalette.html">imagetruecolortopalette</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.imagettftext.html">imagettftext</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>