Optimize function wp_replace_in_html_tags() - Blank foreach loop, count in loop

[mayur8991]

Blank foreach loop found in formatting.php file

​https://github.com/WordPress/wordpress-develop/blob/trunk/src/wp-includes/formatting.php#L761

[mayur8991]

I checked from my side. That $needle and $replace gives the key and value respectively, for the last item of array.

We can use array_slice() function instead of running that foreach() loop.

[nadimcse]

I've checked the purpose of the foreach loop and from my perspective, we can use these two built-in functions
array_key_first() and reset() instead of the foreach loop.

Example:

<?php
$needle = array_key_first($replace_pairs);
$replace = reset($replace_pairs);

[Presskopp]

The provided code by @nadimcse won't work in PHP 5.6.20, which is still marked as compatible with WordPress, see ​https://wordpress.org/about/requirements/

But another optimization can be made, by putting the count( $textarr ) out of the for-loop. Patch attached.

[Presskopp]

related #57345