3v4l.org

run code in 300+ PHP versions simultaneously
<?php $argv[1]=$i='4N4P9N7P1N1P2N2P'; preg_match_all('/(\d+)(\w)/',$argv[1],$m,2); //$o='';foreach($m as $p)$o.=str_repeat($p[2]=='N'?'=':'-',$p[1]); $o='';foreach($m as list(,$n,$c))$o.=str_pad('',$n,$c=='N'?'=':'-'); $a=preg_replace('/./','_',$o=str_replace('--','- ',$o)); echo("$a\n\n\n$o\n\n$a\n");

preferences:
43.49 ms | 402 KiB | 5 Q