Make WordPress Core


Ignore:
Timestamp:
05/02/2023 03:43:03 PM (13 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:

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  • trunk/src/wp-includes/post-template.php

    r55694 r55703  
    888888
    889889    $hash = wp_unslash( $_COOKIE[ 'wp-postpass_' . COOKIEHASH ] );
    890     if ( 0 !== strpos( $hash, '$P$B' ) ) {
     890    if ( ! str_starts_with( $hash, '$P$B' ) ) {
    891891        $required = true;
    892892    } else {
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