Inotify Functions
inotify_init
Inotify Functions
PHP Manual

# inotify_add_watch

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inotify_add_watch — Add a watch to an initialized inotify instance

### Description

int inotify_add_watch ( resource `$inotify_instance` , string `$pathname` , int `$mask` )

inotify_add_watch() adds a new watch or modify an existing watch for the file or directory specified in `pathname` .

Using inotify_add_watch() on a watched object replaces the existing watch. Using the `IN_MASK_ADD` constant adds (OR) events to the existing watch.

### Parameters

`inotify_instance`

  Resource returned by inotify_init()

`pathname`

  File or directory to watch

`mask`

  Events to watch for. See Predefined Constants.

### Return Values

The return value is a unique (inotify instance wide) watch descriptor.

### See Also

- inotify_init()

Inotify Functions
inotify_init
Inotify Functions
PHP Manual