Error level changed in preg_match and preg_match_all functions

[NVoronina]

Error changed if you use not a string as second argument in preg_match function from E_WARNING before 8.0 to TypeError in 8+ versions.
Code example:
<?php $var = preg_match('#[0-9]#', ['test']); var_dump($var);

Result 7.4:
Warning: preg_match() expects parameter 2 to be string, array given in /home/user/scripts/code.php on line 3
bool(false)

Result 8.0:
Fatal error: Uncaught TypeError: preg_match(): Argument #2 ($subject) must be of type string, array given in /home/user/scripts/code.php:3

PS preg_match_all the same behavior

[kamil-tekiela]

Array was never a valid argument to these functions. PHP 8.0 is now throwing an error when an undefined behaviour is triggered by providing invalid parameter values. It's got nothing to do with PCRE functions.

[cmb69]

See also https://www.php.net/manual/en/functions.internal.php

[NVoronina]

See also https://www.php.net/manual/en/functions.internal.php

Thanks, I just ask for this in docs. But now I see it.