Warn when preg_quote is missing the pattern delimiter argument if it is not a standard one #11338
Description
Feature request
The first pattern here warns because you end up with a delimiter in the pattern which is not escaped by preg_quote as & is not a metacharacter (only . \ + * ? [ ^ ] $ ( ) { } = ! < > | : - # are escaped).
https://3v4l.org/1J7nFF
PHPStan processes this fine https://phpstan.org/r/c8aea561-2341-418a-b21c-b7d3f7332d4d as it assumes preg_quote will take care of it, but this first one is actually not safe.
See also phpstan/phpstan-src#3233 (review)
cc @staabm
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