In `wp_schedule_single_event()`, the cron info array is retrieved via a call to `_get_cron_array()` and straight away cast to an array. But as the documentation for that function (correctly) states, the return type of that function is `array|false`, where `false` is returned for a site where no cron jobs have been scheduled (yet).
In the case that `_get_cron_array()` would return `false`, this would now unintentionally create an array with a single entry with key `0` and as the value `false`.
This is a bug. Fixed now by adding validation to the output of `_get_cron_array()` and initializing `$crons` to an empty array if `false` was returned.
Tests added first to prove the bug (a) was introduced in #44818 [44917] and (b) is now fixed.
Follow-up to [44917].
Props jrf, peterwilsoncc.
Fixes#53950.
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The private `_set_cron_array()` function expects a cron array as the first parameter, but will often be passed the - potentially updated - output of a call to `_get_cron_array()`.
When the `_get_cron_array()` function returns `false`, a "Deprecated: Automatic conversion of false to array is deprecated" warning will be thrown on PHP 8.1.
The input validation resolves the deprecation warning by setting the cron value to an empty array when not given an `array` data type.
Adds a full set of `_set_cron_array()` tests.
Follow-up to [4189], [50152].
Props jrf, hellofromTonya, peterwilsoncc.
See #53635.
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This fixes a "Deprecated: Automatic conversion of false to array is deprecated" warning on PHP 8.1.
In `wp_schedule_event()`, the cron info array is retrieved via a call to `_get_cron_array()`, but as the documentation (correctly) states, the return type of that function is `array|false`, where `false` is returned for a virgin site, with no cron jobs scheduled yet.
However, no type check is done on the return value, and the `wp_schedule_event()` function just blindly continues by assigning a value to a subkey of the `$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.
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This allows the functions to return a `WP_Error` object containing more information in case of a problem, instead of just boolean false.
The various `pre_` filters in these functions are also updated so they can return or be passed a `WP_Error` object.
Fixes#49961
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Runs cron jobs later on sites using alternative cron, ie the `ALTERNATE_WP_CRON` constant is true, to more closely match when standard cron jobs are run. Jobs now run on the `wp_loaded` hook at priority `20`. Prior to this change they would run on the `init` hook. This ensures custom post types and taxonomies are registered prior to the jobs running.
This change also prevents alternative wp-cron from running on archived or suspended multisite blogs as these are shut down prior to the `wp_loaded` hook from running.
Moves the existing functionality of `wp_cron()` in to a new private function `_wp_cron()`.
Props flixos90, jeremyfelt, johnbillion, jrf, kurtpayne, nacin, peterwilsoncc, prettyboymp, r-a-y, ryan, stevenkword, swissspidy.
Fixes#20537, #24160.
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This is a final pass to fix PHP compatibiilty issues in the codebase with code changes or adding `phpcs:ignore` comments.
With this change, all PHP compatibility warnings and errors without specific tickets have been addressed (see #49810 and #41750).
Props desrosj, johnbillion, jrf.
See #49922.
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This avoids the performance overhead of the function call every time `dirname( __FILE__ )` was used instead of `__DIR__`.
This commit also includes:
* Removing unnecessary parentheses from `include`/`require` statements. These are language constructs, not function calls.
* Replacing `include` statements for several files with `require_once`, for consistency:
* `wp-admin/admin-header.php`
* `wp-admin/admin-footer.php`
* `wp-includes/version.php`
Props ayeshrajans, desrosj, valentinbora, jrf, joostdevalk, netweb.
Fixes#48082.
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Noteable changes:
- The `magic_quotes_runtime` and `magic_quotes_sybase` settings were removed in PHP 5.4, so no longer need to be set.
- Some functions that use external libraries can generate errors that can't be tested for, so are globally allowed to silence errors.
- Quite a few functions would cause errors if `safe_mode` was set. This setting was removed in PHP 5.4.
- Only a handful of `header()` calls needed corresponding `headers_sent()` checks for unit tests to pass, but more may need to be added as the nightlies builds are tested.
See #46732.
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Improves the logic in `wp_schedule_single_event()` to ensure an identical event is not scheduled within ten minutes.
This moves the logic for checking for identical events to be self contained rather than relying on `wp_next_scheduled()` as this fails to account for events with a past timestamp when wp-cron fails to trigger or for multiple identical events being scheduled already.
Props bodohugobarwich.
Fixes#44818.
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Moves the logic for determining when an event will next run from `wp_next_scheduled()` to `wp_get_scheduled_event()`.
This improves the performance of `wp_get_scheduled_event()` by avoiding duplicate function calls and object cache hits.
Props peterwilsoncc.
Fixes#45976.
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Add the function `wp_get_ready_cron_jobs()` to return a modified version of the cron array limited to jobs ready to be run, ie with a timestamp of `time()` or earlier.
The new function includes the filter `pre_get_ready_cron_jobs` to allow for custom cron storage systems. This rounds out the functionality added in #32656.
Props Pento for code review.
Fixes#45797.
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[43050] updated the Cron API to return values indicating success or failure when called.
At the time, these changes were slated for 5.0, but have since been moved to the 5.1 release. This updates the inline documentation to reflect that.
Fixes#21072.
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Expands documentation to indicate `wp_schedule_event()` ought to be used for rescheduling an upcoming event, while `wp_reschedule_event()` is used for internally rescheduling a recurring event after it runs.
Props Dharm1025, jrf.
Fixes#35968.
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WPCS 1.0.0 includes a bunch of new auto-fixers, which drops the number of coding standards issues across WordPress significantly. Prior to running the auto-fixers, there were 15,312 issues detected. With this commit, we now drop to 4,769 issues.
This change includes three notable additions:
- Multiline function calls must now put each parameter on a new line.
- Auto-formatting files is now part of the `grunt precommit` script.
- Auto-fixable coding standards issues will now cause Travis failures.
Fixes#44600.
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This allows sites with a large cron option or a custom cron implementation to hijack the cron option to store cron data using custom functionality.
`wp_get_scheduled_event()` is new function to retrieve the event object for a given event based on the hook name, arguments and timestamp. If no timestamp is specified the next occurence is returned.
Preflight filters are added to all functions that read from or modify the cron option: `pre_schedule_event`, `pre_reschedule_event`, `pre_unschedule_event`, `pre_clear_scheduled_hook`, `pre_unschedule_hook`, `pre_get_scheduled_event` and `pre_next_scheduled`.
Additionally, the post scheduling hooks `next_scheduled` and `get_schedule` to allow plugins to modify an event after retrieving it from WordPress.
Props rmccue, DavidAnderson, ethitter, peterwilsoncc.
Fixes#32656.
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Return values added to Cron API functions to indicate outcome:
* `wp_schedule_single_event()`, `wp_schedule_event()`, `wp_reschedule_event()` and `wp_unschedule_event()`: boolean indicating success or failure,
* `wp_clear_scheduled_hook()`: integer indicating number of jobs cleared (zero or more), `false` if one or more jobs fail to clear,
* `wp_unschedule_hook()`: integer indicating number of jobs cleared (zero or more), `false` if the jobs fail to clear,
* `spawn_cron()`: boolean indicating whether job spawned,
* `wp_cron()`: integer indicating number of jobs spawned (zero or more), `false` if one or more jobs fail to spawned,
* `_set_cron_array()`: boolean outcome of `update_option()`.
Props evansolomon, jrf, peterwilsoncc, pento for code review.
Fixes#21072.
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