Online PHP editor | refs for 1KFKM

<?php $tests = [ 'LocalBusiness' => 'Local Business', 'CivicStructureBuilding' => 'Civic Structure Building', 'getUserMobilePhoneNumber' => 'Get User Mobile Phone Number', 'bandGuitar1' => 'Band Guitar 1', 'band2Guitar123' => 'Band 2 Guitar 123', 'CustomerIDWithSomeOtherJETWords' => 'Customer ID With Some Other JET Words', 'noOneIsMightierThanI' => 'No One Is Mightier Than I', 'USAIsNumber14' => 'USA Is Number 14', '99LuftBallons' => '99 Luft Ballons', 'fillOutYour403EForm' => 'Fill Out Your 403 E Form', 'ABC123IsEasyAs' => 'ABC 123 Is Easy As', ]; foreach ($tests AS $input => $expected) { $output = preg_replace(array('/(?<=[^A-Z])([A-Z])/', '/(?<=[^0-9])([0-9])/'), ' $0', $input); $output = ucwords($output); echo $output .' : '. ($output == $expected ? 'PASSED' : 'FAILED') . PHP_EOL; }