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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>
<strong class="title">Inotify constants usable with <span class="function"><a href="function.inotify-add-watch.html" class="function">inotify_add_watch()</a></span> and/or returned by <span class="function"><a href="function.inotify-read.html" class="function">inotify_read()</a></span></strong>
<dt id="constant.in-access">
<span class="term">
<strong><code>IN_ACCESS</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
File was accessed (read) (*)
</span>
</dd>
</dt>
<dt id="constant.in-modify">
<span class="term">
<strong><code>IN_MODIFY</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
File was modified (*)
</span>
</dd>
</dt>
<dt id="constant.in-attrib">
<span class="term">
<strong><code>IN_ATTRIB</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Metadata changed (e.g. permissions, mtime, etc.) (*)
</span>
</dd>
</dt>
<dt id="constant.in-close-write">
<span class="term">
<strong><code>IN_CLOSE_WRITE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
File opened for writing was closed (*)
</span>
</dd>
</dt>
<dt id="constant.in-close-nowrite">
<span class="term">
<strong><code>IN_CLOSE_NOWRITE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
File not opened for writing was closed (*)
</span>
</dd>
</dt>
<dt id="constant.in-open">
<span class="term">
<strong><code>IN_OPEN</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
File was opened (*)
</span>
</dd>
</dt>
<dt id="constant.in-moved-to">
<span class="term">
<strong><code>IN_MOVED_TO</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
File moved into watched directory (*)
</span>
</dd>
</dt>
<dt id="constant.in-moved-from">
<span class="term">
<strong><code>IN_MOVED_FROM</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
File moved out of watched directory (*)
</span>
</dd>
</dt>
<dt id="constant.in-create">
<span class="term">
<strong><code>IN_CREATE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
File or directory created in watched directory (*)
</span>
</dd>
</dt>
<dt id="constant.in-delete">
<span class="term">
<strong><code>IN_DELETE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
File or directory deleted in watched directory (*)
</span>
</dd>
</dt>
<dt id="constant.in-delete-self">
<span class="term">
<strong><code>IN_DELETE_SELF</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Watched file or directory was deleted
</span>
</dd>
</dt>
<dt id="constant.in-move-self">
<span class="term">
<strong><code>IN_MOVE_SELF</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Watch file or directory was moved
</span>
</dd>
</dt>
<dt id="constant.in-close">
<span class="term">
<strong><code>IN_CLOSE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Equals to IN_CLOSE_WRITE | IN_CLOSE_NOWRITE
</span>
</dd>
</dt>
<dt id="constant.in-move">
<span class="term">
<strong><code>IN_MOVE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Equals to IN_MOVED_FROM | IN_MOVED_TO
</span>
</dd>
</dt>
<dt id="constant.in-all-events">
<span class="term">
<strong><code>IN_ALL_EVENTS</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Bitmask of all the above constants
</span>
</dd>
</dt>
<dt id="constant.in-unmount">
<span class="term">
<strong><code>IN_UNMOUNT</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
File system containing watched object was unmounted
</span>
</dd>
</dt>
<dt id="constant.in-q-overflow">
<span class="term">
<strong><code>IN_Q_OVERFLOW</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Event queue overflowed (wd is -1 for this event)
</span>
</dd>
</dt>
<dt id="constant.in-ignored">
<span class="term">
<strong><code>IN_IGNORED</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Watch was removed (explicitly by <span class="function"><a href="function.inotify-rm-watch.html" class="function">inotify_rm_watch()</a></span>
or because file was removed or filesystem unmounted
</span>
</dd>
</dt>
<dt id="constant.in-isdir">
<span class="term">
<strong><code>IN_ISDIR</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Subject of this event is a directory
</span>
</dd>
</dt>
<dt id="constant.in-onlydir">
<span class="term">
<strong><code>IN_ONLYDIR</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Only watch pathname if it is a directory (Since Linux 2.6.15)
</span>
</dd>
</dt>
<dt id="constant.in-dont-follow">
<span class="term">
<strong><code>IN_DONT_FOLLOW</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Do not dereference pathname if it is a symlink (Since Linux 2.6.15)
</span>
</dd>
</dt>
<dt id="constant.in-mask-add">
<span class="term">
<strong><code>IN_MASK_ADD</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Add events to watch mask for this pathname if it already exists
(instead of replacing mask).
</span>
</dd>
</dt>
<dt id="constant.in-oneshot">
<span class="term">
<strong><code>IN_ONESHOT</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Monitor pathname for one event, then remove from watch list.
</span>
</dd>
</dt>
</dl>
<blockquote class="note"><p><strong class="note">Note</strong>:
<span class="simpara">
The events marked with an asterisk (*) above can occur for files in watched
directories.
</span>
</p></blockquote>
</div>
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