reserved.constants.html
来自「php的帮助文档,涉及到PHP的案例和基本语法,以及实际应用内容」· HTML 代码 · 共 3,930 行 · 第 1/5 页
HTML
3,930 行
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Predefined Constants</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="reserved.html">List of Reserved Words</a></div> <div class="next" style="text-align: right; float: right;"><a href="resource.html">List of Resource Types</a></div> <div class="up"><a href="reserved.html">List of Reserved Words</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="reserved.constants" class="sect1"> <h2 class="title">Predefined Constants</h2> <div id="reserved.constants.core" class="sect2"> <h3 class="title">Core Predefined Constants</h3> <p class="simpara"> These constants are defined by the PHP core. This includes PHP, the Zend engine, and SAPI modules. </p> <dl> <dt> <span class="term"> <b><tt>PHP_VERSION</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_MAJOR_VERSION</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> Available since PHP 5.3.0. </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_MINOR_VERSION</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> Available since PHP 5.3.0. </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_RELEASE_VERSION</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> Available since PHP 5.3.0. </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_VERSION_ID</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> Available since PHP 5.3.0. </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_EXTRA_VERSION</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> Available since PHP 5.3.0. </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_ZTS</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> Available since PHP 5.3.0. </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_DEBUG</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> Available since PHP 5.3.0. </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_OS</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_SAPI</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> Available since PHP 4.2.0. See also <a href="function.php-sapi-name.html" class="function">php_sapi_name()</a>. </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_EOL</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> Available since PHP 4.3.10 and PHP 5.0.2 </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_INT_MAX</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> Available since PHP 4.4.0 and PHP 5.0.5 </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_INT_SIZE</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> Available since PHP 4.4.0 and PHP 5.0.5 </span> </dd> </dt> <dt> <span class="term"> <b><tt>DEFAULT_INCLUDE_PATH</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>PEAR_INSTALL_DIR</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>PEAR_EXTENSION_DIR</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_EXTENSION_DIR</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_PREFIX</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> Available since PHP 4.3.0 </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_BINDIR</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_LIBDIR</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_DATADIR</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_SYSCONFDIR</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_LOCALSTATEDIR</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_CONFIG_FILE_PATH</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_CONFIG_FILE_SCAN_DIR</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_SHLIB_SUFFIX</tt></b> (<a href="language.types.string.html" class="type string">string</a>) </span> <dd> <span class="simpara"> Available since PHP 4.3.0 </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_OUTPUT_HANDLER_START</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_OUTPUT_HANDLER_CONT</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>PHP_OUTPUT_HANDLER_END</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>E_ERROR</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>E_WARNING</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>E_PARSE</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>E_NOTICE</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>E_CORE_ERROR</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>E_CORE_WARNING</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>E_COMPILE_ERROR</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>E_COMPILE_WARNING</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>E_USER_ERROR</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>E_USER_WARNING</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>E_USER_NOTICE</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>E_ALL</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>E_STRICT</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> Available since PHP 5.0.0 </span> </dd> </dt> <dt> <span class="term"> <b><tt>__COMPILER_HALT_OFFSET__</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> Available since PHP 5.1.0 </span> </dd> </dt> </dl> <p class="para"> See also: <a href="language.constants.predefined.html" class="link">Magic constants</a>. </p> </div> <div id="reserved.constants.standard" class="sect2"> <h3 class="title">Standard Predefined Constants</h3> <p class="simpara"> These constants are defined in PHP by default. </p> <dl> <dt> <span class="term"> <b><tt>EXTR_OVERWRITE</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>EXTR_SKIP</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>EXTR_PREFIX_SAME</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> </span> </dd> </dt> <dt> <span class="term"> <b><tt>EXTR_PREFIX_ALL</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>)⌨️ 快捷键说明
复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?