Make WordPress Core


Ignore:
Timestamp:
05/02/2023 03:43:03 PM (10 months ago)
Author:
SergeyBiryukov
Message:

Code Modernization: Replace usage of strpos() with str_starts_with().

str_starts_with() was introduced in PHP 8.0 to perform a case-sensitive check indicating if the string to search in (haystack) begins with the given substring (needle).

WordPress core includes a polyfill for str_starts_with() on PHP < 8.0 as of WordPress 5.9.

This commit replaces 0 === strpos( ... ) with str_starts_with() in core files, making the code more readable and consistent, as well as improving performance.

While strpos() is slightly faster than the polyfill on PHP < 8.0, str_starts_with() is noticeably faster on PHP 8.0+, as it is optimized to avoid unnecessarily searching along the whole haystack if it does not find the needle.

Follow-up to [52039], [52040], [52326].

Props spacedmonkey, costdev, sabernhardt, mukesh27, desrosj, jorbin, TobiasBg, ayeshrajans, lgadzhev, SergeyBiryukov.
Fixes #58012.

File:
1 edited

Legend:

Unmodified
Added
Removed
  • trunk/src/wp-includes/kses.php

    r55677 r55703  
    12611261         * double hyphens `--` are not accepted by WordPress.
    12621262         */
    1263         if ( strpos( $name_low, 'data-' ) === 0 && ! empty( $allowed_attr['data-*'] )
     1263        if ( str_starts_with( $name_low, 'data-' ) && ! empty( $allowed_attr['data-*'] )
    12641264            && preg_match( '/^data(?:-[a-z0-9_]+)+$/', $name_low, $match )
    12651265        ) {
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