<!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>Overrides built-in functions</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.apd-set-session.html">apd_set_session</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.rename-function.html">rename_function</a></div> <div class="up"><a href="ref.apd.html">APD Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.override-function" class="refentry"> <div class="refnamediv"> <h1 class="refname">override_function</h1> <p class="verinfo">(PECL apd >= 0.2)</p><p class="refpurpose"><span class="refname">override_function</span> — <span class="dc-title">Overrides built-in functions</span></p> </div> <div class="refsect1 description" id="refsect1-function.override-function-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><strong>override_function</strong></span> ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$function_name</code></span> , <span class="methodparam"><span class="type">string</span> <code class="parameter">$function_args</code></span> , <span class="methodparam"><span class="type">string</span> <code class="parameter">$function_code</code></span> )</div> <p class="para rdfs-comment"> Overrides built-in functions by replacing them in the symbol table. </p> </div> <div class="refsect1 parameters" id="refsect1-function.override-function-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">function_name</code></em></span> <dd> <p class="para"> The function to override. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">function_args</code></em></span> <dd> <p class="para"> The function arguments, as a comma separated string. </p> <p class="para"> Usually you will want to pass this parameter, as well as the <em><code class="parameter">function_code</code></em> parameter, as a single quote delimited string. The reason for using single quoted strings, is to protect the variable names from parsing, otherwise, if you use double quotes there will be a need to escape the variable names, e.g. \<var class="varname"><var class="varname">$your_var</var></var>. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">function_code</code></em></span> <dd> <p class="para"> The new code for the function. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.override-function-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.override-function-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-433"> <p><strong>Example #1 <span class="function"><strong>override_function()</strong></span> example</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />override_function</span><span style="color: #007700">(</span><span style="color: #DD0000">'test'</span><span style="color: #007700">, </span><span style="color: #DD0000">'$a,$b'</span><span style="color: #007700">, </span><span style="color: #DD0000">'echo "DOING TEST"; return $a * $b;'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> </div> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.apd-set-session.html">apd_set_session</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.rename-function.html">rename_function</a></div> <div class="up"><a href="ref.apd.html">APD Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>