📄 filter.constants.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>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="filter.resources.html">Resource Types</a></div> <div class="next" style="text-align: right; float: right;"><a href="ref.filter.html">Filter Functions</a></div> <div class="up"><a href="book.filter.html">Filter</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div> <h1>Predefined Constants</h1> <p class="simpara">The constants below are defined by this extension, andwill only be available when the extension has eitherbeen compiled into PHP or dynamically loaded at runtime.</p> <dl> <dt> <span class="term"> <b><tt>INPUT_POST</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> <a href="reserved.variables.post.html" class="link">POST</a> variables. </span> </dd> </dt> <dt> <span class="term"> <b><tt>INPUT_GET</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> <a href="reserved.variables.get.html" class="link">GET</a> variables. </span> </dd> </dt> <dt> <span class="term"> <b><tt>INPUT_COOKIE</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> <a href="reserved.variables.cookies.html" class="link">COOKIE</a> variables. </span> </dd> </dt> <dt> <span class="term"> <b><tt>INPUT_ENV</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> <a href="reserved.variables.environment.html" class="link">ENV</a> variables. </span> </dd> </dt> <dt> <span class="term"> <b><tt>INPUT_SERVER</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> <a href="reserved.variables.server.html" class="link">SERVER</a> variables. </span> </dd> </dt> <dt> <span class="term"> <b><tt>INPUT_SESSION</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> <a href="reserved.variables.session.html" class="link">SESSION</a> variables. (not implemented yet) </span> </dd> </dt> <dt> <span class="term"> <b><tt>INPUT_REQUEST</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> <a href="reserved.variables.request.html" class="link">REQUEST</a> variables. (not implemented yet) </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_FLAG_NONE</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> No flags. </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_REQUIRE_SCALAR</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> Flag used to require scalar as input </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_REQUIRE_ARRAY</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> Require an array as input. </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_FORCE_ARRAY</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> Always returns an array. </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_NULL_ON_FAILURE</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> Use NULL instead of FALSE on failure. </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_VALIDATE_INT</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> ID of "int" filter. </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_VALIDATE_BOOLEAN</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> ID of "boolean" filter. </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_VALIDATE_FLOAT</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> ID of "float" filter. </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_VALIDATE_REGEXP</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> ID of "validate_regexp" filter. </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_VALIDATE_URL</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> ID of "validate_url" filter. </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_VALIDATE_EMAIL</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> ID of "validate_email" filter. </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_VALIDATE_IP</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> ID of "validate_ip" filter. </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_DEFAULT</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> ID of default ("string") filter. </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_UNSAFE_RAW</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> ID of "unsafe_raw" filter. </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_SANITIZE_STRING</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> ID of "string" filter. </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_SANITIZE_STRIPPED</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> ID of "stripped" filter. </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_SANITIZE_ENCODED</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> ID of "encoded" filter. </span> </dd> </dt> <dt> <span class="term"> <b><tt>FILTER_SANITIZE_SPECIAL_CHARS</tt></b> (<a href="language.types.integer.html" class="type integer">integer</a>) </span> <dd> <span class="simpara"> ID of "special_chars" filter. </span> </dd> </dt> <dt>⌨️ 快捷键说明
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