Look-and-say sequence: Difference between revisions

=={{header|PHP}}==

<lang php><?php

function lookandsay($str) {

return preg_replace('/(.)\1*/e', 'strlen($0) . $1', $str);

}

$num = "1";

foreach (range(1,10) as $i) {

echo "$num\n";

$num = lookandsay($num);

}

?></lang>