phar.offsetget.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>get a PharFileInfo object for a specific file</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="phar.offsetexists.html">Phar::offsetExists</a></div> <div class="next" style="text-align: right; float: right;"><a href="phar.offsetset.html">Phar::offsetSet</a></div> <div class="up"><a href="class.Phar.html">Phar</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="phar.offsetget" class="refentry"> <div class="refnamediv"> <h1 class="refname">Phar::offsetGet</h1> <p class="verinfo">(PECL phar:1.0.0-1.2.1)</p><p class="refpurpose"><span class="refname">Phar::offsetGet</span> — <span class="dc-title">get a PharFileInfo object for a specific file</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><b><b>Phar::offsetGet</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$offset</tt></span> )</div> <p class="para rdfs-comment"> This is an implementation of the <span class="interfacename">ArrayAccess</span> interface allowing direct manipulation of the contents of a Phar archive using array access brackets. offsetGet is used for retrieving files from a Phar archive. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">offset</tt></i></span> <dd> <p class="para"> The filename (relative path) to look for in a Phar. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> A <a href="class.PharFileInfo.html" class="classname">PharFileInfo</a> object is returned that can be used to iterate over a file's contents or to retrieve information about the current file. </p> </div> <div class="refsect1 errors"> <h3 class="title">Errors/Exceptions</h3> <p class="para"> This method throws <b class="classname">BadMethodCallException</b> if the file does not exist in the Phar archive. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 A <b>Phar::offsetGet()</b> example</b></p> <div class="example-contents"><p> As with all classes that implement the <b class="classname">ArrayAccess</b> interface, offsetGet is automatically called when using the [] angle bracket operator </p></div> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br />$p </span><span style="color: #007700">= new </span><span style="color: #0000BB">Phar</span><span style="color: #007700">(</span><span style="color: #0000BB">dirname</span><span style="color: #007700">(</span><span style="color: #0000BB">__FILE__</span><span style="color: #007700">) . </span><span style="color: #DD0000">'/myphar.phar'</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">'myphar.phar'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$p</span><span style="color: #007700">[</span><span style="color: #DD0000">'exists.txt'</span><span style="color: #007700">] = </span><span style="color: #DD0000">"file exists\n"</span><span style="color: #007700">;<br />try {<br /> </span><span style="color: #FF8000">// automatically calls offsetGet()<br /> </span><span style="color: #007700">echo </span><span style="color: #0000BB">$p</span><span style="color: #007700">[</span><span style="color: #DD0000">'exists.txt'</span><span style="color: #007700">];<br /> echo </span><span style="color: #0000BB">$p</span><span style="color: #007700">[</span><span style="color: #DD0000">'doesnotexist.txt'</span><span style="color: #007700">];<br />} catch (</span><span style="color: #0000BB">BadMethodCallException $e</span><span style="color: #007700">) {<br /> echo </span><span style="color: #0000BB">$e</span><span style="color: #007700">;<br />}<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>file existsEntry doesnotexist.txt does not exist</pre></div> </pre></div> </div> </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="phar.offsetexists.html" class="function" rel="rdfs-seeAlso">Phar::offsetExists()</a></li> <li class="member"><a href="phar.offsetset.html" class="function" rel="rdfs-seeAlso">Phar::offsetSet()</a></li> <li class="member"><a href="phar.offsetunset.html" class="function" rel="rdfs-seeAlso">Phar::offsetUnset()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="phar.offsetexists.html">Phar::offsetExists</a></div> <div class="next" style="text-align: right; float: right;"><a href="phar.offsetset.html">Phar::offsetSet</a></div> <div class="up"><a href="class.Phar.html">Phar</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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