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<?php
class scbCron {
protected $schedule;
protected $interval;
protected $time;
protected $hook;
protected $callback_args;
/**
* Create a new cron job
*
* @param string Reference to main plugin file
* @param array List of args:
string $action OR callback $callback
string $schedule OR number $interval
array $callback_args ( optional )
* @param bool Debug mode
*/
function __construct( $file, $args, $debug = false ) {
$this->_set_args( $args );
scbUtil::add_activation_hook( $file, array( $this, 'reset' ) );
register_deactivation_hook( $file, array( $this, 'unschedule' ) );
add_filter( 'cron_schedules', array( $this, '_add_timing' ) );
if ( $debug )
self::debug();
}
/* Change the interval of the cron job
*
* @param array List of args:
string $schedule OR number $interval
timestamp $time ( optional )
*/
function reschedule( $args ) {
extract( $args );
if ( $schedule && $this->schedule != $schedule ) {
$this->schedule = $schedule;
} elseif ( $interval && $this->interval != $interval ) {
$this->schedule = $interval . 'secs';
$this->interval = $interval;
}
$this->time = $time;
$this->reset();
}
/**
* Reset the schedule
*/
function reset() {
$this->unschedule();
$this->schedule();
}
/**
* Clear the cron job
*/
function unschedule() {
# wp_clear_scheduled_hook( $this->hook, $this->callback_args );
self::really_clear_scheduled_hook( $this->hook );
}
/**
* Execute the job now
*/
function do_now() {
do_action( $this->hook );
}
/**
* Execute the job with a given delay
* @param int Delay in seconds
*/
function do_once( $delay = 0 ) {
wp_schedule_single_event( time() + $delay, $this->hook, $this->callback_args );
}
/**
* Display current cron jobs
*/
function debug() {
add_action( 'admin_footer', array( __CLASS__, '_debug' ) );
}
//_____INTERNAL METHODS_____
function _add_timing( $schedules ) {
if ( isset( $schedules[$this->schedule] ) )
return $schedules;
$schedules[$this->schedule] = array( 'interval' => $this->interval,
'display' => $this->interval . ' seconds' );
return $schedules;
}
function _debug() {
if ( ! current_user_can( 'manage_options' ) )
return;
echo "<pre>";
print_r( get_option( 'cron' ) );
echo "</pre>";
}
protected function schedule() {
if ( ! $this->time )
$this->time = time();
wp_schedule_event( $this->time, $this->schedule, $this->hook, $this->callback_args );
}
protected function _set_args( $args ) {
extract( $args );
// Set hook
if ( isset( $action ) ) {
$this->hook = $action;
} elseif ( isset( $callback ) ) {
$this->hook = self::_callback_to_string( $callback );
add_action( $this->hook, $callback );
} elseif ( method_exists( $this, 'callback' ) ) {
$this->hook = self::_callback_to_string( $callback );
add_action( $this->hook, $callback );
} else {
trigger_error( '$action OR $callback not set', E_USER_WARNING );
}
// Set schedule
if ( isset( $interval ) ) {
$this->schedule = $interval . 'secs';
$this->interval = $interval;
} elseif ( isset( $schedule ) ) {
$this->schedule = $schedule;
} else {
trigger_error( '$schedule OR $interval not set', E_USER_WARNING );
}
if ( isset( $callback_args ) )
$this->callback_args = ( array ) $callback_args;
}
protected static function really_clear_scheduled_hook( $name ) {
$crons = _get_cron_array();
foreach ( $crons as $timestamp => $hooks ) {
foreach ( $hooks as $hook => $args )
if ( $hook == $name )
unset( $crons[$timestamp][$hook] );
if ( empty( $hooks ) )
unset( $crons[$timestamp] );
}
_set_cron_array( $crons );
}
protected static function _callback_to_string( $callback ) {
if ( ! is_array( $callback ) )
$str = $callback;
elseif ( ! is_string( $callback[0] ) )
$str = get_class( $callback[0] ) . '_' . $callback[1];
else
$str = $callback[0] . '::' . $callback[1];
$str .= '_hook';
return $str;
}
}
|
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