Use strict comparison in wp_list_comments()

[deepakrohilla]

A strict comparison should be implemented in the wp-includes/comment-template.php file in wp_list_comments() on line 2291:
if ( $parsed_args['page'] !== $current_cpage || $parsed_args['per_page'] !== $current_per_page ) .

$parsed_args['page'] and $current_cpage, as well as $parsed_args['per_page'] and $current_per_page, both return integer values. I have not observed any of these variables returning a different return type.

https://core.trac.wordpress.org/ticket/62169

[SergeyBiryukov]

Hi there, thanks for the ticket!

Replying to deepakrohilla:

$parsed_args['page'] and $current_cpage, as well as $parsed_args['per_page'] and $current_per_page, both return integer values. I have not observed any of these variables returning a different return type.

In my testing, both $current_cpage and $current_per_page are actually a string here, as returned by get_query_var(). Technically $parsed_args['page'] and $parsed_args['per_page'] can be a string too, depending on the type that was passed in, so this would need type casting on both sides for correct comparison.

[SergeyBiryukov]

In 59183:

Coding Standards: Use strict comparison in wp_list_comments().

Follow-up to [8962], [9296], [9424], [34735], [36157].

Props deepakrohilla, sabernhardt, aristath, poena, afercia, SergeyBiryukov.
Fixes #62169. See #61607.

Thanks for the PR! Merged in r59183.