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home/pressec/www/presselib/wp-cron.php 0000604 00000007125 15252250222 0014050 0 ustar 00 <?php /** * A pseudo-CRON daemon for scheduling WordPress tasks * * WP Cron is triggered when the site receives a visit. In the scenario * where a site may not receive enough visits to execute scheduled tasks * in a timely manner, this file can be called directly or via a server * CRON daemon for X number of times. * * Defining DISABLE_WP_CRON as true and calling this file directly are * mutually exclusive and the latter does not rely on the former to work. * * The HTTP request to this file will not slow down the visitor who happens to * visit when the cron job is needed to run. * * @package WordPress */ ignore_user_abort(true); if ( !empty($_POST) || defined('DOING_AJAX') || defined('DOING_CRON') ) die(); /** * Tell WordPress we are doing the CRON task. * * @var bool */ define('DOING_CRON', true); if ( !defined('ABSPATH') ) { /** Set up WordPress environment */ require_once( dirname( __FILE__ ) . '/wp-load.php' ); } /** * Retrieves the cron lock. * * Returns the uncached `doing_cron` transient. * * @ignore * @since 3.3.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @return string|false Value of the `doing_cron` transient, 0|false otherwise. */ function _get_cron_lock() { global $wpdb; $value = 0; if ( wp_using_ext_object_cache() ) { /* * Skip local cache and force re-fetch of doing_cron transient * in case another process updated the cache. */ $value = wp_cache_get( 'doing_cron', 'transient', true ); } else { $row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", '_transient_doing_cron' ) ); if ( is_object( $row ) ) $value = $row->option_value; } return $value; } if ( false === $crons = _get_cron_array() ) die(); $keys = array_keys( $crons ); $gmt_time = microtime( true ); if ( isset($keys[0]) && $keys[0] > $gmt_time ) die(); // The cron lock: a unix timestamp from when the cron was spawned. $doing_cron_transient = get_transient( 'doing_cron' ); // Use global $doing_wp_cron lock otherwise use the GET lock. If no lock, trying grabbing a new lock. if ( empty( $doing_wp_cron ) ) { if ( empty( $_GET[ 'doing_wp_cron' ] ) ) { // Called from external script/job. Try setting a lock. if ( $doing_cron_transient && ( $doing_cron_transient + WP_CRON_LOCK_TIMEOUT > $gmt_time ) ) return; $doing_cron_transient = $doing_wp_cron = sprintf( '%.22F', microtime( true ) ); set_transient( 'doing_cron', $doing_wp_cron ); } else { $doing_wp_cron = $_GET[ 'doing_wp_cron' ]; } } /* * The cron lock (a unix timestamp set when the cron was spawned), * must match $doing_wp_cron (the "key"). */ if ( $doing_cron_transient != $doing_wp_cron ) return; foreach ( $crons as $timestamp => $cronhooks ) { if ( $timestamp > $gmt_time ) break; foreach ( $cronhooks as $hook => $keys ) { foreach ( $keys as $k => $v ) { $schedule = $v['schedule']; if ( $schedule != false ) { $new_args = array($timestamp, $schedule, $hook, $v['args']); call_user_func_array('wp_reschedule_event', $new_args); } wp_unschedule_event( $timestamp, $hook, $v['args'] ); /** * Fires scheduled events. * * @ignore * @since 2.1.0 * * @param string $hook Name of the hook that was scheduled to be fired. * @param array $args The arguments to be passed to the hook. */ do_action_ref_array( $hook, $v['args'] ); // If the hook ran too long and another cron process stole the lock, quit. if ( _get_cron_lock() != $doing_wp_cron ) return; } } } if ( _get_cron_lock() == $doing_wp_cron ) delete_transient( 'doing_cron' ); die();
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