There are two methods Pattern::quote() and Pattern::unquote().

First of which works as preg_quote() is supposed to work (except for the fact that preg_quote() is broken before PHP 7.1.3 version, and Pattern::quote() fixes it)...

  • PHP
Pattern::quote("Welcome\How are you?");
Welcome\\How are you\?

...second of which is the direct opposite:

  • T-Regx
Pattern::unquote("Welcome\\How are you\?");
Welcome\How are you?

Please, keep in mind that this is not a safe way to create patterns with unsafe characters - for that, consider using Prepared Patterns.


These two methods should be transitive, so:

$output = Pattern::unquote(Pattern::quote($input));

The contract is $input === $output for any $input value.

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