wp_clear_scheduled_hook( string $hook, array $args = array() )

使用指定参数取消附加到钩子的所有事件。
Unschedules all events attached to the hook with the specified arguments.

目录锚点：#说明#参数#源码#笔记

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说明（Description）

警告：此函数可能返回布尔值FALSE，但也可能返回计算结果为FALSE的非布尔值。有关强制转换为布尔值的信息，请参阅PHP文档。使用===运算符测试此函数的返回值。

参数（Parameters）

源码（Source）

/**
 * Unschedule all cron jobs attached to a specific hook.
 *
 * @since 2.1.0
 *
 * @param string $hook Action hook, the execution of which will be unscheduled.
 * @param array $args Optional. Arguments that were to be pass to the hook's callback function.
 */
function wp_clear_scheduled_hook( $hook, $args = array() ) {
	// Backward compatibility
	// Previously this function took the arguments as discrete vars rather than an array like the rest of the API
	if ( !is_array($args) ) {
		_deprecated_argument( __FUNCTION__, '3.0', __('This argument has changed to an array to match the behavior of the other cron functions.') );
		$args = array_slice( func_get_args(), 1 );
	}

	// This logic duplicates wp_next_scheduled()
	// It's required due to a scenario where wp_unschedule_event() fails due to update_option() failing,
	// and, wp_next_scheduled() returns the same schedule in an infinite loop.
	$crons = _get_cron_array();
	if ( empty( $crons ) )
		return;

	$key = md5( serialize( $args ) );
	foreach ( $crons as $timestamp => $cron ) {
		if ( isset( $cron[ $hook ][ $key ] ) ) {
			wp_unschedule_event( $timestamp, $hook, $args );
		}
	}
}

笔记（Notes）

基本示例