self Cannot Be Used Anymore In Callable Arrays

PHP supports a callable syntax, based on array: it must be an array of two elements, where the index 0 is the object or the class, and the index 1 is the method name.

Until PHP 8.2, it was possible to use the keyword self, to make the callable dependent on the context of usage of the callable.

In the example, self would be calling the static method replace, in A.

Since PHP 8.2, this is a deprecated feature, and it will be removed in PHP 9.

PHP code

<?php

class B
{
    public static function work($it) {
             return preg_replace_callback('~\w+~', array('self', 'self::replace'), $it);
    }

    public static function replace($a) {
     return 'a';
    }
}

echo b::work('abc');

?>

Before

a

After

PHP Deprecated:  Use of "self" in callables is deprecated

Deprecated: Use of "self" in callables is deprecated
PHP Deprecated:  Callables of the form ["B", "self::replace"] are deprecated

Deprecated: Callables of the form ["B", "self::replace"] are deprecated
a

PHP version change

This behavior was deprecated in 8.2

This behavior changed in 9.0

Error Messages

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