WP query doesn’t work as expected with PHP8 when used in AJAX callback

Resolved Gabor Lippert
(@lunule)

6 months, 2 weeks ago

Hi,

WP query doesn’t seem working as expected with PHP8 when it’s used in an AJAX callback function.

Both with WP_Query and get_posts, using $post->ID or get_the_ID() within the foreach following the query returns NULL.

I tested multiple scenarios, w/wo wp_setup_postdata, $wpdb->get_posts, etc., and the result was always the same.

Thanks for investigating this further…

Viewing 5 replies - 1 through 5 (of 5 total)

Pioneer Web Design
(@swansonphotos)

6 months, 2 weeks ago

Been there. Even WP5.9 is not fully compat with PHP 8+ (yet, soon, I hope).

Have you tried PHP 7.4X?

Info: https://make.wordpress.org/core/2022/01/10/wordpress-5-9-and-php-8-0-8-1/

Thread Starter Gabor Lippert
(@lunule)

6 months, 2 weeks ago

Hi @swansonphotos, thanks for the follow-up and for the official announcement link.

And yes, it works as expected with PHP 7.4 – problem is, the client wants PHP 8.
But I’m happy to see that the fact that WP5.9 is not fully compat with PHP 8+ is an official information – this is something I can use to persuade him to stay with 7.4 for now.

Thread Starter Gabor Lippert
(@lunule)

6 months, 2 weeks ago

Quick update – I’m resetting this to ‘not resolved’.

The reason why I think this ticket should remain open is that the information in the official announcement (and the potential temporary fixes/polyfills) doesn’t include/cover anything about the specific problem reported here.

The get_posts query I use in the AJAX callback function is totally by the book – yet it totally doesn’t work. AND it starts working as expected as soon as it’s tested anywhere else but in an AKAX callback function.
Thread Starter Gabor Lippert
(@lunule)

6 months, 2 weeks ago
I’m attaching the query I use, maybe/hopefully someone notices something I didn’t:
```
$mealtype_mq_Arr = array(
	'relation' => 'OR',
    array(
        'key'     => 'kmp-cf-mealtype',
        'value'   => 'breakfast',
        'compare' => 'LIKE',
    ),
    array(
        'key'     => 'kmp-cf-mealtype',
        'value'   => 'lunch',
        'compare' => 'LIKE',
    ),
    array(
        'key'     => 'kmp-cf-mealtype',
        'value'   => 'dinner',
        'compare' => 'LIKE',
    ),
);

// + similar definitions of the $diettype_mq_Arr, $sensitivity_mq_Arr, 
//   $complexity_mq_Arr arrays.	    
// (...)    

$query_args_Arr = array(
	'post_status' 		=> 'publish',
	'post_type' 		=> 'kmp-meal',
	'posts_per_page' 	=> -1,
	'meta_query'		=> array(
        'relation' => 'AND',
		$mealtype_mq_Arr,
		$diettype_mq_Arr,
		$sensitivity_mq_Arr,
		$complexity_mq_Arr,	        
	 	)
);

$posts_Arr 	= get_posts( $query_args_Arr );

foreach ( $posts_Arr as $post ) :

	$pid = $post->ID;
	// (...)

endforeach;
```
- This reply was modified 6 months, 2 weeks ago by Gabor Lippert.
Thread Starter Gabor Lippert
(@lunule)

5 months, 2 weeks ago

👍 Solved.

With the latest WP version, I can’t replicate the issue anymore, meaning the core WP dev team fixed the bug.

Viewing 5 replies - 1 through 5 (of 5 total)

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WP query doesn’t work as expected with PHP8 when used in AJAX callback

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