- str_repeat: documentation ( source)
- print_r: documentation ( source)
- preg_match_all: documentation ( source)
- str_replace: documentation ( source)
- preg_split: documentation ( source)
<?php
$i='4N4P19N7P1N1P2N2P';
print_r(preg_split('/(?<=\d)/',$i));
exit();
//foreach()
preg_match_all('/(\d+)(\w)/',$i,$m,2);
foreach($m as $p)$o.=str_repeat($p[2]=='N'?'=':'-',$p[1]);
$a=str_repeat('_',$n=strlen($o=str_replace('--','- ',$o)));
echo("$a\n\n\n$o\n\n$a\n");