functions.wp-styles.php renew Version 28.0

Deprecated: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /usr/local/lsws/wordpress/wp-includes/functions.wp-styles.php on line 90

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  • Hey,

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  • I use grok ai to modify

    The error message you're encountering:

    Deprecated: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /usr/local/lsws/wordpress/wp-includes/functions.wp-styles.php on line 90

    indicates that the stripos() function in PHP is being called with a null value as its first argument ($haystack), which is no longer allowed as of PHP 8.1. This is a deprecation warning, meaning the code still works for now but will likely break in future PHP versions unless fixed.


    Where the Error Occurs

    The error points to line 90 in the functions.wp-styles.php file, which is within the wp_add_inline_style() function:

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  • I have exactly the same problem after upgrade to 28. Any news with that?

  • I solved that problem.


    In file: /wp-includes/functions.wp-styles.php

    In line: 90

    Changed from: if ( false !== stripos( $data, '</script>' ) ) {

    to: if ( is_string($data) && false !== stripos( $data, '</script>' ) ) {

  • Hi @MaciekVT,

    Glad to see that you handled it.

    If you have any other questions or problems feel free to ask.


    Best regards

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