uTools-Manuals/docs/php/xdiff_file_rabdiff.html
2019-04-28 19:00:34 +08:00

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<title>Make binary diff of two files using the Rabin's polynomial fingerprinting algorithm</title>
</head>
<body class="docs"><div id="layout">
<div id="layout-content"><div id="function.xdiff-file-rabdiff" class="refentry">
<div class="refnamediv">
<h1 class="refname">xdiff_file_rabdiff</h1>
<p class="verinfo">(PECL xdiff &gt;= 1.5.0)</p><p class="refpurpose"><span class="refname">xdiff_file_rabdiff</span> &mdash; <span class="dc-title">Make binary diff of two files using the Rabin&#039;s polynomial fingerprinting algorithm</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.xdiff-file-rabdiff-description">
<h3 class="title">说明</h3>
<div class="methodsynopsis dc-description">
<span class="methodname"><strong>xdiff_file_rabdiff</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$old_file</code></span>
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$new_file</code></span>
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$dest</code></span>
) : <span class="type">bool</span></div>
<p class="para rdfs-comment">
Makes a binary diff of two files and stores the result in a patch file.
The difference between this function and <span class="function"><a href="xdiff_file_bdiff.html" class="function">xdiff_file_bdiff()</a></span> is different
algorithm used which should result in faster execution and smaller diff produced.
This function works with both text and binary files. Resulting patch
file can be later applied using <span class="function"><a href="xdiff_file_bpatch.html" class="function">xdiff_file_bpatch()</a></span>/<span class="function"><a href="xdiff_string_bpatch.html" class="function">xdiff_string_bpatch()</a></span>.
</p>
<p class="para">
For more details about differences between algorithm used please check <a href="http://www.xmailserver.org/xdiff_lib.html" class="link external">&raquo;&nbsp;libxdiff</a>
website.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.xdiff-file-rabdiff-parameters">
<h3 class="title">参数</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">old_file</code></dt>
<dd>
<p class="para">
Path to the first file. This file acts as &quot;old&quot; file.
</p>
</dd>
<dt>
<code class="parameter">new_file</code></dt>
<dd>
<p class="para">
Path to the second file. This file acts as &quot;new&quot; file.
</p>
</dd>
<dt>
<code class="parameter">dest</code></dt>
<dd>
<p class="para">
Path of the resulting patch file. Resulting file contains differences
between &quot;old&quot; and &quot;new&quot; files. It is in binary format and is human-unreadable.
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.xdiff-file-rabdiff-returnvalues">
<h3 class="title">返回值</h3>
<p class="para">
成功时返回 <strong><code>TRUE</code></strong> 或者在失败时返回 <strong><code>FALSE</code></strong>
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.xdiff-file-rabdiff-examples">
<h3 class="title">范例</h3>
<p class="para">
<div class="example" id="example-2871">
<p><strong>Example #1 <span class="function"><strong>xdiff_file_rabdiff()</strong></span> example</strong></p>
<div class="example-contents"><p>
The following code makes binary diff of two archives.
</p></div>
<div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$old_version&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'my_script_1.0.tgz'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$new_version&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'my_script_1.1.tgz'</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">xdiff_file_rabdiff</span><span style="color: #007700">(</span><span style="color: #0000BB">$old_version</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$new_version</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'my_script.bdiff'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 notes" id="refsect1-function.xdiff-file-rabdiff-notes">
<h3 class="title">注释</h3>
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
Both files will be loaded into memory so ensure that your memory_limit is
set high enough.
</p>
</p></blockquote>
</div>
<div class="refsect1 seealso" id="refsect1-function.xdiff-file-rabdiff-seealso">
<h3 class="title">参见</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="function"><a href="xdiff_file_bpatch.html" class="function" rel="rdfs-seeAlso">xdiff_file_bpatch()</a> - Patch a file with a binary diff</span></li>
</ul>
</p>
</div>
</div></div></div></body></html>