(PECL inotify >= 0.1.2)
inotify_init — Initialize an inotify instance
Initialize an inotify instance for use with inotify_add_watch()
This function has no parameters.
A stream resource or false
on error.
Example #1 Example usage of inotify
<?php// Open an inotify instance$fd = inotify_init();// Watch __FILE__ for metadata changes (e.g. mtime)$watch_descriptor = inotify_add_watch($fd, __FILE__, IN_ATTRIB);// generate an eventtouch(__FILE__);// Read events$events = inotify_read($fd);print_r($events);// The following methods allows to use inotify functions without blocking on inotify_read():// - Using stream_select() on $fd:$read = array($fd);$write = null;$except = null;stream_select($read,$write,$except,0);// - Using stream_set_blocking() on $fdstream_set_blocking($fd, 0);inotify_read($fd); // Does no block, and return false if no events are pending// - Using inotify_queue_len() to check if event queue is not empty$queue_len = inotify_queue_len($fd); // If > 0, inotify_read() will not block// Stop watching __FILE__ for metadata changesinotify_rm_watch($fd, $watch_descriptor);// Close the inotify instance// This may have closed all watches if this was not already donefclose($fd);?>
The above example will output something similar to:
array( array( 'wd' => 1, // Equals $watch_descriptor 'mask' => 4, // IN_ATTRIB bit is set 'cookie' => 0, // unique id to connect related events (e.g. // IN_MOVE_FROM and IN_MOVE_TO events) 'name' => '', // the name of a file (e.g. if we monitored changes // in a directory) ), );