WordPress at a glance
filter is not described

pre_get_ready_cron_jobs filter-hook . WP 5.1.0

Filter to preflight or hijack retrieving ready cron jobs.

Returning an array will short-circuit the normal retrieval of ready cron jobs, causing the function to return the filtered value instead.

Usage

add_filter( 'pre_get_ready_cron_jobs', 'filter_function_name_1706' );
function filter_function_name_1706( $pre ){
	// filter...

	return $pre;
}
$pre(null/array)
Array of ready cron tasks to return instead.
Default: null to continue using results from _get_cron_array()

Where the hook is called

wp_get_ready_cron_jobs()
pre_get_ready_cron_jobs
wp-includes/cron.php 855
$pre = apply_filters( 'pre_get_ready_cron_jobs', null );

Where the hook is used (in WP core)

Does not used.