<?php $strings = [ "This is a (first) test with the first hit", "This is a (first] test with the first hit" ]; foreach ($strings as $str) { preg_match( '/(?:\(first\)|\[first]|{first})(*SKIP)(*FAIL)|\bfirst\b/', $str, $matches, PREG_OFFSET_CAPTURE); print_r($matches); }
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