3v4l.org

run code in 300+ PHP versions simultaneously
<?php $map = array( "A"=>"ᴀ", "B"=>"ʙ", "C"=>"ᴄ", "D"=>"ᴅ" //etc ); function convertToSmall($string,$map){ $return = ""; $length = strlen($string); for($i = 0; $i<$length; $i++){ $input = strtoupper($string[$i]); if(isset($map[$input])){ $input = $map[$input]; } $return .= $input; } return $return; } print_r(convertToSmall("aa bc da",$map));
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
ᴀᴀ ʙᴄ ᴅᴀ

preferences:
148.36 ms | 408 KiB | 5 Q