📄 pcre.configuration.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Runtime Configuration</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="pcre.installation.html">Installation</a></div> <div class="next" style="text-align: right; float: right;"><a href="pcre.resources.html">Resource Types</a></div> <div class="up"><a href="pcre.setup.html">Installing/Configuring</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="pcre.configuration" class="section"> <h2 class="title">Runtime Configuration</h2> <p class="simpara">The behaviour of these functions is affected by settings in <var class="filename">php.ini</var>.</p> <p class="para"> <table border="5"> <caption><b>PCRE Configuration Options</b></caption> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">Name</th> <th colspan="1">Default</th> <th colspan="1">Changeable</th> <th colspan="1">Changelog</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">pcre.backtrack_limit</td> <td colspan="1" rowspan="1" align="left">"100000"</td> <td colspan="1" rowspan="1" align="left">PHP_INI_ALL</td> <td colspan="1" rowspan="1" align="left">Available since PHP 5.2.0.</td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">pcre.recursion_limit</td> <td colspan="1" rowspan="1" align="left">"100000"</td> <td colspan="1" rowspan="1" align="left">PHP_INI_ALL</td> <td colspan="1" rowspan="1" align="left">Available since PHP 5.2.0.</td> </tr> </tbody> </colgroup> </table> For further details and definitions of the PHP_INI_* constants, see the <a href="ini.html" class="xref">php.ini directives</a>. </p> <p class="para">Here's a short explanation ofthe configuration directives.</p> <p class="para"> <dl> <dt id="ini.pcre.backtrack-limit"> <span class="term"> <i><tt class="parameter">pcre.backtrack_limit</tt></i> <a href="language.types.integer.html" class="type integer">integer</a> </span> <dd> <p class="para"> PCRE's backtracking limit. </p> </dd> </dt> <dt id="ini.pcre.recursion-limit"> <span class="term"> <i><tt class="parameter">pcre.recursion_limit</tt></i> <a href="language.types.integer.html" class="type integer">integer</a> </span> <dd> <p class="para"> PCRE's recursion limit. Please note that if you set this value to a high number you may consume all the available process stack and eventually crash PHP (due to reaching the stack size limit imposed by the Operating System). </p> </dd> </dt> </dl> </p></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="pcre.installation.html">Installation</a></div> <div class="next" style="text-align: right; float: right;"><a href="pcre.resources.html">Resource Types</a></div> <div class="up"><a href="pcre.setup.html">Installing/Configuring</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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