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Migration to PHP 8.1: Fixing Deprecated "Passing null to Parameter" Errors
PHP 8.1 deprecates passing null as parameters to certain core functions, posing a challenge for developers. To address this, the question explores options for renaming built-in functions and using wrappers to cast null to empty strings. However, the current limitation of the rename_function() function has sparked a search for alternative solutions.
To begin with, it's crucial to acknowledge that PHP 8.1 deprecates, not prohibits, such calls. Developers are given ample time to rectify their code before a potential error status in PHP 9.0.
For immediate resolution, the null coalescing operator (??) provides a convenient way to assign default values. For example, htmlspecialchars($something) can be updated to htmlspecialchars($something ?? '') to address the specific PHP 8.1 behavior.
Furthermore, several options are available:
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