<!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>Predefined Constants</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="sem.resources.html">Resource Types</a></div> <div class="next" style="text-align: right; float: right;"><a href="ref.sem.html">Semaphore Functions</a></div> <div class="up"><a href="book.sem.html">Semaphore</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="sem.constants" class="appendix"> <h1>Predefined Constants</h1> <p class="simpara"> The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime. </p> <p class="para"> <table class="doctable table"> <caption><strong>System V message constants</strong></caption> <thead> <tr> <th>Constant</th> <th>Type</th> <th>Changelog</th> </tr> </thead> <tbody class="tbody"> <tr> <td>MSG_IPC_NOWAIT</td> <td><span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span></td> <td class="empty"> </td> </tr> <tr> <td>MSG_EAGAIN</td> <td><span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span></td> <td>As of 5.2.0</td> </tr> <tr> <td>MSG_ENOMSG</td> <td><span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span></td> <td>As of 5.2.0</td> </tr> <tr> <td>MSG_NOERROR</td> <td><span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span></td> <td class="empty"> </td> </tr> <tr> <td>MSG_EXCEPT</td> <td><span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span></td> <td class="empty"> </td> </tr> </tbody> </table> </p> </div> <hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="sem.resources.html">Resource Types</a></div> <div class="next" style="text-align: right; float: right;"><a href="ref.sem.html">Semaphore Functions</a></div> <div class="up"><a href="book.sem.html">Semaphore</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>