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<title>Predefined Constants</title>
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<h1>Predefined Constants</h1>
<p class="simpara">
The constants below are defined by this extension, and
will only be available when the extension has either
been compiled into PHP or dynamically loaded at runtime.
</p>
<dl>
<dt id="constant.xdiff-patch-normal">
<span class="term">
<strong><code>XDIFF_PATCH_NORMAL</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
This flag indicates that <span class="function"><a href="function.xdiff-string-patch.html" class="function">xdiff_string_patch()</a></span> and
<span class="function"><a href="function.xdiff-file-patch.html" class="function">xdiff_file_patch()</a></span> functions should create result by
applying patch to original content thus creating newer version of file. This is the default
mode of operation.
</span>
</dd>
</dt>
<dt id="constant.xdiff-patch-reverse">
<span class="term">
<strong><code>XDIFF_PATCH_REVERSE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
This flag indicated that <span class="function"><a href="function.xdiff-string-patch.html" class="function">xdiff_string_patch()</a></span> and
<span class="function"><a href="function.xdiff-file-patch.html" class="function">xdiff_file_patch()</a></span> functions should create result by
reversing patch changed from newer content thus creating original version.
</span>
</dd>
</dt>
</dl>
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