count(): Parameter must be an array or an object that implements Countable in /var/www/html/wp-includes/post-template.php on line 319

[davidscpl]

Call get_the_content() with no arguments and $post is null. If post is null then this is ran:

 $elements = compact( 'page', 'more', 'preview', 'pages', 'multipage' );

Associate array has keys with null values. Then on lin3 319 is

if ( $elements['page'] > count( $elements['pages'] ) ) {

Which causes this notice:

Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/wp-includes/post-template.php on line 319 Notice: Trying to access array offset on value of type null in /var/www/html/wp-includes/post-template.php on line 325

[audrasjb]

Hello and welcome to WordPress Trac @davidscpl,

I tried to reproduce the issue using the following steps, but it didn't succeed.

• Using a fresh WordPress 5.9.2 installation
• Enable WP_DEBUG/WP_DEBUG_DISPLAY constants
• In one of the Bundled Themes, open the 404.php template and add the following code:

global $post;
var_export( $post );
echo get_the_content();

It echoes NULL (line 2). No PHP warning.

Could you please provide more details on how we can reproduce the issue?

Thanks!

[davidbaumwald]

Related: #42814, #47824.