Online PHP editor | output for 7OXaZ

<?php $My_String = preg_replace("/\h+/", "[\h-]+", "alpha beta gamma delta"); $strings = [ "My codephrase is alPha Beta-GaMMa deLTa and your codephrase is ALpha-beTA gAmmA-DElta", "alpha beta gamma delta", "alpha beta gamma-delta", "alpha beta-gamma delta", "alpha beta-gamma-delta", "alpha-beta gamma delta", "alpha-beta gamma-delta", "alpha-beta-gamma delta", "alpha-beta-gamma-delta", "alpha-beta-gamma-d" ]; foreach ($strings as $str) { $str = preg_replace("/\b$My_String\b/i", "<strong>$0</strong>", $str); echo $str . PHP_EOL; }