function.parse-url.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 244 行
HTML
244 行
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Parse a URL and return its components</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="function.http-build-query.html">http_build_query</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.rawurldecode.html">rawurldecode</a></div> <div class="up"><a href="ref.url.html">URL Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.parse-url" class="refentry"> <div class="refnamediv"> <h1 class="refname">parse_url</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">parse_url</span> — <span class="dc-title">Parse a URL and return its components</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <span class="methodname"><b><b>parse_url</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$url</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$component</tt></span> ] )</div> <p class="para rdfs-comment"> This function parses a URL and returns an associative array containing any of the various components of the URL that are present. </p> <p class="para"> This function is <em class="emphasis">not</em> meant to validate the given URL, it only breaks it up into the above listed parts. Partial URLs are also accepted, <b>parse_url()</b> tries its best to parse them correctly. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">url</tt></i></span> <dd> <p class="para"> The URL to parse </p> </dd> </dt> </dl> <dl> <dt> <span class="term"><i><tt class="parameter">component</tt></i></span> <dd> <p class="para"> Specify one of <b><tt>PHP_URL_SCHEME</tt></b>, <b><tt>PHP_URL_HOST</tt></b>, <b><tt>PHP_URL_PORT</tt></b>, <b><tt>PHP_URL_USER</tt></b>, <b><tt>PHP_URL_PASS</tt></b>, <b><tt>PHP_URL_PATH</tt></b>, <b><tt>PHP_URL_QUERY</tt></b> or <b><tt>PHP_URL_FRAGMENT</tt></b> to retrieve just a specific URL component as a <a href="language.types.string.html" class="type string">string</a>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> On seriously malformed URLs, <b>parse_url()</b> may return <b><tt>FALSE</tt></b> and emit a <b><tt>E_WARNING</tt></b>. Otherwise an associative array is returned, whose components may be (at least one): <ul class="itemizedlist"> <li class="listitem"> <span class="simpara"> <var class="varname">scheme</var> - e.g. http </span> </li> <li class="listitem"> <span class="simpara"> <var class="varname">host</var> </span> </li> <li class="listitem"> <span class="simpara"> <var class="varname">port</var> </span> </li> <li class="listitem"> <span class="simpara"> <var class="varname">user</var> </span> </li> <li class="listitem"> <span class="simpara"> <var class="varname">pass</var> </span> </li> <li class="listitem"> <span class="simpara"> <var class="varname">path</var> </span> </li> <li class="listitem"> <span class="simpara"> <var class="varname">query</var> - after the question mark <i>?</i> </span> </li> <li class="listitem"> <span class="simpara"> <var class="varname">fragment</var> - after the hashmark <i>#</i> </span> </li> </ul> </p> <p class="para"> If the <i><tt class="parameter">component</tt></i> parameter is specified a <a href="language.types.string.html" class="type string">string</a> is returned instead of an <a href="language.types.array.html" class="type array">array</a>. </p> </div> <div class="refsect1 changelog"> <h3 class="title">ChangeLog</h3> <p class="para"> <table class="informaltable"> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">Version</th> <th colspan="1">Description</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">5.1.2</td> <td colspan="1" rowspan="1" align="left">Added the <i><tt class="parameter">component</tt></i> parameter</td> </tr> </tbody> </colgroup> </table> </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 A <b>parse_url()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br />$url </span><span style="color: #007700">= </span><span style="color: #DD0000">'http://username:password@hostname/path?arg=value#anchor'</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">parse_url</span><span style="color: #007700">(</span><span style="color: #0000BB">$url</span><span style="color: #007700">));<br /><br />echo </span><span style="color: #0000BB">parse_url</span><span style="color: #007700">(</span><span style="color: #0000BB">$url</span><span style="color: #007700">, </span><span style="color: #0000BB">PHP_URL_PATH</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> <div class="example-contents"><p>The above example will output:</p></div> <div class="example-contents"><pre><div class="cdata"><pre>Array( [scheme] => http [host] => hostname [user] => username [pass] => password [path] => /path [query] => arg=value [fragment] => anchor)/path</pre></div> </pre></div> </div> </p> </div> <div class="refsect1 notes"> <h3 class="title">Notes</h3> <blockquote><p><b class="note">Note</b>: This function doesn't work with relative URLs. <br /> </p></blockquote> <blockquote><p><b class="note">Note</b>: This function is intended specifically for the purpose of parsing URLs and not URIs. However, to comply with PHP's backwards compatibility requirements it makes an exception for the file:// scheme where tripple slashes (file:///...) are allowed. For any other scheme this is invalid. <br /> </p></blockquote> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.pathinfo.html" class="function" rel="rdfs-seeAlso">pathinfo()</a></li> <li class="member"><a href="function.parse-str.html" class="function" rel="rdfs-seeAlso">parse_str()</a></li> <li class="member"><a href="function.http-build-query.html" class="function" rel="rdfs-seeAlso">http_build_query()</a></li> <li class="member"><a href="function.dirname.html" class="function" rel="rdfs-seeAlso">dirname()</a></li> <li class="member"><a href="function.basename.html" class="function" rel="rdfs-seeAlso">basename()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.http-build-query.html">http_build_query</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.rawurldecode.html">rawurldecode</a></div> <div class="up"><a href="ref.url.html">URL Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 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?