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Code Modernization: Check the return type of _get_cron_array() in wp_schedule_event().

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This fixes a "Deprecated: Automatic conversion of false to array is deprecated" warning on PHP 8.1.

In `wp_schedule_event()`, the cron info array is retrieved via a call to `_get_cron_array()`, but as the documentation (correctly) states, the return type of that function is `array|false`, where `false` is returned for a virgin site, with no cron jobs scheduled yet.

However, no type check is done on the return value, and the `wp_schedule_event()` function just blindly continues by assigning a value to a subkey of the `$crons` "array".

Fixed by adding validation for the returned value from `_get_cron_array()` and initializing an empty array if `false` was returned.

Reference: [https://developer.wordpress.org/reference/functions/_get_cron_array/ WordPress Developer Resources: _get_cron_array()]

Props jrf, hellofromTonya, lucatume, pbearne, iluy, pedromendonca, SergeyBiryukov.
See #53635.
Built from https://develop.svn.wordpress.org/trunk@51619


git-svn-id: http://core.svn.wordpress.org/trunk@51225 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Sergey Biryukov 2021-08-16 15:23:57 +00:00
parent a19a2ad8b1
commit 2ac9f0814d
2 changed files with 6 additions and 3 deletions
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7
wp-includes/cron.php
View File

@ -302,6 +302,10 @@ function wp_schedule_event( $timestamp, $recurrence, $hook, $args = array(), $wp
$key = md5( serialize( $event->args ) );
$crons = _get_cron_array();
if ( ! is_array( $crons ) ) {
$crons = array();
}
$crons[ $event->timestamp ][ $event->hook ][ $key ] = array(
'schedule' => $event->schedule,
'args' => $event->args,
@ -1125,8 +1129,7 @@ function wp_get_ready_cron_jobs() {
}
$crons = _get_cron_array();
if ( false === $crons ) {
if ( ! is_array( $crons ) ) {
return array();
}

2
wp-includes/version.php
View File

@ -13,7 +13,7 @@
*
* @global string $wp_version
*/
$wp_version = '5.9-alpha-51618';
$wp_version = '5.9-alpha-51619';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.