phar.using.object.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>Using Phar Archives: the Phar and PharData class</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.using.html">Using Phar Archives</a></div> <div class="next" style="text-align: right; float: right;"><a href="phar.creating.html">Creating Phar Archives</a></div> <div class="up"><a href="phar.using.html">Using Phar Archives</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="phar.using.object" class="section"> <h2 class="title">Using Phar Archives: the Phar and PharData class</h2> <p class="para"> The <a href="class.Phar.html" class="classname">Phar</a> class supports reading and manipulation of Phar archives, as well as iteration through inherited functionality of the <a href="http://www.php.net/~helly/php/ext/spl/classRecursiveDirectoryIterator.html" class="link external">» <a href="class.recursivedirectoryiterator.html" class="classname">RecursiveDirectoryIterator</a></a> class. With support for the <b class="classname">ArrayAccess</b> interface, files inside a Phar archive can be accessed as if they were part of an associative array. </p> <p class="para"> The <a href="class.PharData.html" class="classname">PharData</a> class extends the <a href="class.Phar.html" class="classname">Phar</a>, and allows creating and modifying non-executable (data) tar and zip archives even if <i>phar.readonly</i>=1 in php.ini. As such, <a href="phardata.setalias.html" class="function">PharData::setAlias()</a> and <a href="phardata.setstub.html" class="function">PharData::setStub()</a> are both disabled as the concept of alias and stub are unique to executable phar archives. </p> <p class="para"> It is important to note that when creating a Phar archive, the full path should be passed to the <a href="class.Phar.html" class="classname">Phar</a> object constructor. Relative paths will fail to initialize. </p> <p class="para"> Assuming that <i>$p</i> is a Phar object initialized as follows: </p> <p class="para"> <div class="informalexample"> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br />$p </span><span style="color: #007700">= new </span><span style="color: #0000BB">Phar</span><span style="color: #007700">(</span><span style="color: #DD0000">'/path/to/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">?></span></span></code></div> </div> </div> </p> <p class="para"> An empty Phar archive will be created at <i>/path/to/myphar.phar</i>, or if <i>/path/to/myphar.phar</i> already exists, it will be opened again. The literal <i>myphar.phar</i> demonstrates the concept of an alias that can be used to reference <i>/path/to/myphar.phar</i> in URLs as in: </p> <p class="para"> <div class="informalexample"> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// these two calls to file_get_contents() are equivalent if<br />// /path/to/myphar.phar has an explicit alias of "myphar.phar"<br />// in its manifest, or if the phar was initialized with the<br />// previous example's Phar object setup<br /></span><span style="color: #0000BB">$f </span><span style="color: #007700">= </span><span style="color: #0000BB">file_get_contents</span><span style="color: #007700">(</span><span style="color: #DD0000">'phar:///path/to/myphar.phar/whatever.txt'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$f </span><span style="color: #007700">= </span><span style="color: #0000BB">file_get_contents</span><span style="color: #007700">(</span><span style="color: #DD0000">'phar://myphar.phar/whatever.txt'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> <p class="para"> With the newly created <i>$p</i> <a href="class.Phar.html" class="classname">Phar</a> object, the following is possible: <ul class="itemizedlist"> <li class="listitem"> <span class="simpara"> <i>$a = $p['file.php']</i> creates a <a href="class.PharFileInfo.html" class="classname">PharFileInfo</a> class that refers to the contents of <i>phar://myphar.phar/file.php</i> </span> </li> <li class="listitem"> <span class="simpara"> <i>$p['file.php'] = $v</i> creates a new file (<i>phar://myphar.phar/file.php</i>), or overwrites an existing file within <i>myphar.phar</i>. <i>$v</i> can be either a string or an open file pointer, in which case the entire contents of the file will be used to create the new file. Note that <i>$p->addFromString('file.php', $v)</i> is functionally equivalent to the above. Also possible is to add the contents of a file with <i>$p->addFile('/path/to/file.php', 'file.php')</i>. Lastly, an empty directory can be created with <i>$p->addEmptyDir('empty')</i>. </span> </li> <li class="listitem"> <span class="simpara"> <i>isset($p['file.php'])</i> can be used to determine whether <i>phar://myphar.phar/file.php</i> exists within <i>myphar.phar</i>. </span> </li> <li class="listitem"> <span class="simpara"> <i>unset($p['file.php'])</i> erases <i>phar://myphar.phar/file.php</i> from <i>myphar.phar</i>. </span> </li> </ul> </p> <p class="para"> In addition, the <a href="class.Phar.html" class="classname">Phar</a> object is the only way to access Phar-specific metadata, through <a href="phar.getmetadata.html" class="function">Phar::getMetaData()</a>, and the only way to set or retrieve a Phar archive's PHP loader stub through <a href="phar.getstub.html" class="function">Phar::getStub()</a> and <a href="phar.setstub.html" class="function">Phar::setStub()</a>. Additionally, compression for the entire Phar archive at once can only be manipulated using the <a href="class.Phar.html" class="classname">Phar</a> class. </p> <p class="para"> The full list of <a href="class.Phar.html" class="classname">Phar</a> object functionality is documented below. </p> <p class="para"> The <a href="class.PharFileInfo.html" class="classname">PharFileInfo</a> class extends the <a href="http://www.php.net/~helly/php/ext/spl/classSplFileInfo.html" class="link external">» <b class="classname">SplFileInfo</b></a> class, and adds several methods for manipulating Phar-specific details of a file contained within a Phar, such as manipulating compression and metadata. </p></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="phar.using.html">Using Phar Archives</a></div> <div class="next" style="text-align: right; float: right;"><a href="phar.creating.html">Creating Phar Archives</a></div> <div class="up"><a href="phar.using.html">Using Phar Archives</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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