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144 lines
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HTML
144 lines
6.5 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>Make unified diff of two strings</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.xdiff-string-diff" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">xdiff_string_diff</h1>
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<p class="verinfo">(PECL xdiff >= 0.2.0)</p><p class="refpurpose"><span class="refname">xdiff_string_diff</span> — <span class="dc-title">Make unified diff of two strings</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.xdiff-string-diff-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>xdiff_string_diff</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$old_data</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$new_data</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$context</code><span class="initializer"> = 3</span></span>
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[, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$minimal</code><span class="initializer"> = <strong><code>FALSE</code></strong></span></span>
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]] ) : <span class="type">string</span></div>
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<p class="para rdfs-comment">
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Makes an unified diff containing differences between <code class="parameter">old_data</code> string and
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<code class="parameter">new_data</code> string and returns it. The resulting diff is human-readable.
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An optional <code class="parameter">context</code> parameter specifies how many lines of context should be
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added around each change. Setting <code class="parameter">minimal</code> parameter
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to true will result in outputting the shortest patch file possible (can take a long time).
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.xdiff-string-diff-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">old_data</code></dt>
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<dd>
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<p class="para">
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First string with data. It acts as "old" data.
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</p>
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</dd>
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<dt>
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<code class="parameter">new_data</code></dt>
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<dd>
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<p class="para">
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Second string with data. It acts as "new" data.
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</p>
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</dd>
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<dt>
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<code class="parameter">context</code></dt>
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<dd>
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<p class="para">
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Indicates how many lines of context you want to include in the diff
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result.
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</p>
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</dd>
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<dt>
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<code class="parameter">minimal</code></dt>
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<dd>
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<p class="para">
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Set this parameter to <strong><code>TRUE</code></strong> if you want to minimalize the size of the
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result (can take a long time).
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</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.xdiff-string-diff-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns string with resulting diff or <strong><code>FALSE</code></strong> if an internal error happened.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.xdiff-string-diff-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-2873">
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<p><strong>Example #1 <span class="function"><strong>xdiff_string_diff()</strong></span> example</strong></p>
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<div class="example-contents"><p>
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The following code makes unified diff of two articles.
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</p></div>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br />$old_article </span><span style="color: #007700">= </span><span style="color: #0000BB">file_get_contents</span><span style="color: #007700">(</span><span style="color: #DD0000">'./old_article.txt'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$new_article </span><span style="color: #007700">= </span><span style="color: #0000BB">$_REQUEST</span><span style="color: #007700">[</span><span style="color: #DD0000">'article'</span><span style="color: #007700">]; </span><span style="color: #FF8000">/* Let's say that someone pasted a new article to html form */<br /><br /></span><span style="color: #0000BB">$diff </span><span style="color: #007700">= </span><span style="color: #0000BB">xdiff_string_diff</span><span style="color: #007700">(</span><span style="color: #0000BB">$old_article</span><span style="color: #007700">, </span><span style="color: #0000BB">$new_article</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">);<br />if (</span><span style="color: #0000BB">is_string</span><span style="color: #007700">(</span><span style="color: #0000BB">$diff</span><span style="color: #007700">)) {<br /> echo </span><span style="color: #DD0000">"Differences between two articles:\n"</span><span style="color: #007700">;<br /> echo </span><span style="color: #0000BB">$diff</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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</div>
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</p>
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</div>
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<div class="refsect1 notes" id="refsect1-function.xdiff-string-diff-notes">
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<h3 class="title">注释</h3>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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This function doesn't work well with binary strings. To make diff of binary
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strings use <span class="function"><a href="xdiff_string_bdiff.html" class="function">xdiff_string_bdiff()</a></span>/<span class="function"><a href="xdiff_string_rabdiff.html" class="function">xdiff_string_rabdiff()</a></span>.
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</p>
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</p></blockquote>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.xdiff-string-diff-seealso">
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<h3 class="title">参见</h3>
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<p class="para">
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="xdiff_string_patch.html" class="function" rel="rdfs-seeAlso">xdiff_string_patch()</a> - Patch a string with an unified diff</span></li>
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</ul>
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</p>
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</div>
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</div></div></div></body></html> |