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<?php $userInput = 'YO264UU'; // remove all spaces and upper case $userInput = strtoupper(preg_replace('/\s+/', '', $userInput)); if (true || isValidPostcode($userInput)) { // Basic postcode formatting - add a space before the last 3 characters $formatted = substr($userInput, 0, -3) . ' ' . substr($userInput, -3); // now look up in db using $formatted } else { // invalid postcode! } var_dump($formatted);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(8) "YO26 4UU"

preferences:
316.68 ms | 406 KiB | 460 Q