3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?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 $combinaison.'\n';
based on ZsPGn
Output for 5.5.24 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
4aa\n4ab\n4ac\n4ba\n4bb\n4bc\n4ca\n4cb\n4cc\n
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '$prefix' (T_VARIABLE) in /in/BvQtE on line 6
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected T_VARIABLE in /in/BvQtE on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_VARIABLE in /in/BvQtE on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/BvQtE on line 6
Process exited with code 255.