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<?php $postcode = 'SW196QX'; // Validate the postcode if (preg_match( '/^GIR 0AA)|((([A-Z-[QVX]][0-9][0-9]?)|(([A-Z-[QVX]][A-Z-[IJZ]][0-9][0-9]?)|(([A-Z-[QVX]][0-9][A-HJKPSTUW])|([A-Z-[QVX]][A-Z-[IJZ]][0-9][ABEHMNPRVWXY])))) [0-9][A-Z-[CIKMOV]]{2})$/', $postcode ) === 1) { echo 'Invalid'; } else { echo 'Valid'; }
Output for git.master, git.master_jit, rfc.property-hooks
Warning: preg_match(): Compilation failed: unmatched closing parenthesis at offset 8 in /in/eqdsr on line 6 Valid

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