<!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>Syntax highlighting of a string</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.highlight-file.html">highlight_file</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.ignore-user-abort.html">ignore_user_abort</a></div> <div class="up"><a href="ref.misc.html">Misc. Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.highlight-string" class="refentry"> <div class="refnamediv"> <h1 class="refname">highlight_string</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">highlight_string</span> — <span class="dc-title">Syntax highlighting of a string</span></p> </div> <div class="refsect1 description" id="refsect1-function.highlight-string-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <span class="methodname"><strong>highlight_string</strong></span> ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$str</code></span> [, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$return</code><span class="initializer"> = false</span></span> ] )</div> <p class="simpara"> Outputs or returns a syntax highlighted version of the given PHP code using the colors defined in the built-in syntax highlighter for PHP. </p> </div> <div class="refsect1 parameters" id="refsect1-function.highlight-string-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">str</code></em></span> <dd> <p class="para"> The PHP code to be highlighted. This should include the opening tag. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">return</code></em></span> <dd> <p class="para"> Set this parameter to <strong><code>TRUE</code></strong> to make this function return the highlighted code. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.highlight-string-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> If <em><code class="parameter">return</code></em> is set to <strong><code>TRUE</code></strong>, returns the highlighted code as a string instead of printing it out. Otherwise, it will return <strong><code>TRUE</code></strong> on success, <strong><code>FALSE</code></strong> on failure. </p> </div> <div class="refsect1 changelog" id="refsect1-function.highlight-string-changelog"> <h3 class="title">Changelog</h3> <p class="para"> <table class="doctable informaltable"> <thead> <tr> <th>Version</th> <th>Description</th> </tr> </thead> <tbody class="tbody"> <tr> <td>4.2.0</td> <td> The <em><code class="parameter">return</code></em> parameter was added. </td> </tr> </tbody> </table> </p> </div> <div class="refsect1 examples" id="refsect1-function.highlight-string-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-3780"> <p><strong>Example #1 <span class="function"><strong>highlight_string()</strong></span> example</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />highlight_string</span><span style="color: #007700">(</span><span style="color: #DD0000">'<?php phpinfo(); ?>'</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 (in PHP 4): </p></div> <div class="example-contents screen"> <div class="cdata"><pre> <code><font color="#000000"> <font color="#0000BB">&lt;?php phpinfo</font><font color="#007700">(); </font><font color="#0000BB">?&gt;</font> </font> </code> </pre></div> </div> <div class="example-contents"><p> The above example will output (in PHP 5): </p></div> <div class="example-contents screen"> <div class="cdata"><pre> <code><span style="color: #000000"> <span style="color: #0000BB">&lt;?php phpinfo</span><span style="color: #007700">(); </span><span style="color: #0000BB">?&gt;</span> </span> </code> </pre></div> </div> </div> </p> </div> <div class="refsect1 notes" id="refsect1-function.highlight-string-notes"> <h3 class="title">Notes</h3> <blockquote class="note"><p><strong class="note">Note</strong>: <p class="para">When the <em><code class="parameter">return</code></em> parameter is used, this function uses internal output buffering so it cannot be used inside an <span class="function"><a href="function.ob-start.html" class="function">ob_start()</a></span> callback function.</p></p></blockquote> </div> <div class="refsect1 seealso" id="refsect1-function.highlight-string-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"> <span class="function"><a href="function.highlight-file.html" class="function" rel="rdfs-seeAlso">highlight_file()</a> - Syntax highlighting of a file</span></li> <li class="member"><a href="misc.configuration.html#ini.syntax-highlighting" class="link">Highlighting INI directives</a></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.highlight-file.html">highlight_file</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.ignore-user-abort.html">ignore_user_abort</a></div> <div class="up"><a href="ref.misc.html">Misc. 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