$a=array(1,-4,6,-3,7,-2,6,4);
function demo ($x){
if ($x<0)
return false;
else
return true;
}
print_r(array_filter($a,demo));
function demo ($x){
if ($x<0)
return false;
else
return true;
}
print_r(array_filter($a,demo));
function odd($var)
{
return($var % 2 == 1);
}function even($var)
{
return($var % 2 == 0);
}$array1 = array("a"=>1, "b"=>2, "c"=>3, "d"=>4, "e"=>5);
$array2 = array(6, 7, 8, 9, 10, 11, 12);echo "Odd :\n";
print_r(array_filter($array1, "odd"));
echo "Even:\n";
print_r(array_filter($array2, "even"));
?>
Array ( [0] => 1 [2] => 6 [4] => 7 [6] => 6 [7] => 4 )