<!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>This function runs a self test on the specified module</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.mcrypt-module-open.html">mcrypt_module_open</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.mcrypt-ofb.html">mcrypt_ofb</a></div> <div class="up"><a href="ref.mcrypt.html">Mcrypt Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.mcrypt-module-self-test" class="refentry"> <div class="refnamediv"> <h1 class="refname">mcrypt_module_self_test</h1> <p class="verinfo">(PHP 4 >= 4.0.2, PHP 5)</p><p class="refpurpose"><span class="refname">mcrypt_module_self_test</span> — <span class="dc-title">This function runs a self test on the specified module</span></p> </div> <div class="refsect1 description" id="refsect1-function.mcrypt-module-self-test-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><strong>mcrypt_module_self_test</strong></span> ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$algorithm</code></span> [, <span class="methodparam"><span class="type">string</span> <code class="parameter">$lib_dir</code></span> ] )</div> <p class="para rdfs-comment"> This function runs the self test on the algorithm specified. </p> </div> <div class="refsect1 parameters" id="refsect1-function.mcrypt-module-self-test-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">algorithm</code></em></span> <dd> <p class="para">One of the <strong><code>MCRYPT_ciphername</code></strong> constants, or the name of the algorithm as string.</p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">lib_dir</code></em></span> <dd> <p class="para"> The optional <em><code class="parameter">lib_dir</code></em> parameter can contain the location where the algorithm module is on the system. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.mcrypt-module-self-test-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> The function returns <strong><code>TRUE</code></strong> if the self test succeeds, or <strong><code>FALSE</code></strong> when it fails. </p> </div> <div class="refsect1 examples" id="refsect1-function.mcrypt-module-self-test-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-852"> <p><strong>Example #1 <span class="function"><strong>mcrypt_module_self_test()</strong></span> example</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">mcrypt_module_self_test</span><span style="color: #007700">(</span><span style="color: #0000BB">MCRYPT_RIJNDAEL_128</span><span style="color: #007700">)) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">mcrypt_module_self_test</span><span style="color: #007700">(</span><span style="color: #0000BB">MCRYPT_BOGUS_CYPHER</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:</p></div> <div class="example-contents screen"> <div class="cdata"><pre> bool(true) bool(false) </pre></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.mcrypt-module-open.html">mcrypt_module_open</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.mcrypt-ofb.html">mcrypt_ofb</a></div> <div class="up"><a href="ref.mcrypt.html">Mcrypt Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>