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<?php function odd($var) { // retourne lorsque l'entrée est impaire return($var & 1); } function even($var) { // retourne lorsque l'entrée est paire return(!($var & 1)); } $array1 = array("a"=>1, "b"=>2, "c"=>3, "d"=>4, "e"=>5); $array2 = array(6, 7, 8, 9, 10, 11, 12); echo "Impair :\n"; print_r(array_filter($array1, "odd")); echo "Pair :\n"; print_r(array_filter($array2, "even"));
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Impair : Array ( [a] => 1 [c] => 3 [e] => 5 ) Pair : Array ( [0] => 6 [2] => 8 [4] => 10 [6] => 12 )

preferences:
254.86 ms | 404 KiB | 371 Q