Online PHP editor | refs for BvQtE

<?php function combinaisons($chaine, $prefix = '') { if(strlen($chaine) == strlen($prefix)) { yield $prefix; return; } $caracteres = str_split($chaine, 1); foreach($caracteres as $caractere) { $solutions = combinaisons($chaine, $prefix.$caractere); foreach($solutions as $solution) yield $solution; } } $combinaisons = combinaisons('abc', 4); foreach($combinaisons as $combinaison) echo $combinaison.'\n';