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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.xattr-root">
<strong><code>XATTR_ROOT</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
Set attribute in root (trusted) namespace. Requires root privileges.
</span>
</dd>
<dt id="constant.xattr-dontfollow">
<strong><code>XATTR_DONTFOLLOW</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
Do not follow the symbolic link but operate on symbolic link itself.
</span>
</dd>
<dt id="constant.xattr-create">
<strong><code>XATTR_CREATE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
Function will fail if extended attribute already exists.
</span>
</dd>
<dt id="constant.xattr-replace">
<strong><code>XATTR_REPLACE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
Function will fail if extended attribute doesn't exist.
</span>
</dd>
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