<!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>Return the effective group ID of the current process</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.posix-getcwd.html">posix_getcwd</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.posix-geteuid.html">posix_geteuid</a></div> <div class="up"><a href="ref.posix.html">POSIX Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.posix-getegid" class="refentry"> <div class="refnamediv"> <h1 class="refname">posix_getegid</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">posix_getegid</span> — <span class="dc-title">Return the effective group ID of the current process</span></p> </div> <div class="refsect1 description" id="refsect1-function.posix-getegid-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><strong>posix_getegid</strong></span> ( <span class="methodparam">void</span> )</div> <p class="para rdfs-comment"> Return the numeric effective group ID of the current process. </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.posix-getegid-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns an <span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span> of the effective group ID. </p> </div> <div class="refsect1 examples" id="refsect1-function.posix-getegid-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-3652"> <p><strong>Example #1 <span class="function"><strong>posix_getegid()</strong></span> example</strong></p> <div class="example-contents"><p> This example will print out the effective group id, once it is changed with <span class="function"><a href="function.posix-setegid.html" class="function">posix_setegid()</a></span>. </p></div> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br /></span><span style="color: #007700">echo </span><span style="color: #DD0000">'My real group id is '</span><span style="color: #007700">.</span><span style="color: #0000BB">posix_getgid</span><span style="color: #007700">(); </span><span style="color: #FF8000">//20<br /></span><span style="color: #0000BB">posix_setegid</span><span style="color: #007700">(</span><span style="color: #0000BB">40</span><span style="color: #007700">);<br />echo </span><span style="color: #DD0000">'My real group id is '</span><span style="color: #007700">.</span><span style="color: #0000BB">posix_getgid</span><span style="color: #007700">(); </span><span style="color: #FF8000">//20<br /></span><span style="color: #007700">echo </span><span style="color: #DD0000">'My effective group id is '</span><span style="color: #007700">.</span><span style="color: #0000BB">posix_getegid</span><span style="color: #007700">(); </span><span style="color: #FF8000">//40<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> </div> </p> </div> <div class="refsect1 notes" id="refsect1-function.posix-getegid-notes"> <h3 class="title">Notes</h3> <p class="para"> <span class="function"><strong>posix_getegid()</strong></span> is different than <span class="function"><a href="function.posix-getgid.html" class="function">posix_getgid()</a></span> because effective group ID can be changed by a calling process using <span class="function"><a href="function.posix-setegid.html" class="function">posix_setegid()</a></span>. </p> </div> <div class="refsect1 seealso" id="refsect1-function.posix-getegid-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"> <span class="function"><a href="function.posix-getgrgid.html" class="function" rel="rdfs-seeAlso">posix_getgrgid()</a> - Return info about a group by group id</span></li> <li class="member"> <span class="function"><a href="function.posix-getgid.html" class="function" rel="rdfs-seeAlso">posix_getgid()</a> - Return the real group ID of the current process</span></li> <li class="member"> <span class="function"><a href="function.posix-setgid.html" class="function" rel="rdfs-seeAlso">posix_setgid()</a> - Set the GID of the current process</span></li> </ul> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; 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