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Question:Filters elements of an array using a callback function using php ?



asked Sep 13, 2013 in PHP by rajesh
edited Sep 12, 2013
+1 vote
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1 Answer

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you can try this i hope that will be very usefull for all
function odd($var)
{
    // returns whether the input integer is odd
    return($var & 1);
}
 
function even($var)
{
    // returns whether the input integer is even
    return(!($var & 1));
}
 
$array1 = array("a"=>1, "b"=>2, "c"=>3, "d"=>4, "e"=>5);
$array2 = array(6, 7, 8, 9, 10, 11, 12);
 
echo "Odd :\n";
print_r(array_filter($array1, "odd"));
echo "Even:\n";
print_r(array_filter($array2, "even"));
?>
The above example will output:
Odd :
Array
(
    [a] => 1
    [c] => 3
    [e] => 5
)
Even:
Array
(
    [0] => 6
    [2] => 8
    [4] => 10
    [6] => 12
)
answered Sep 13, 2013 by rajesh
edited Sep 12, 2013

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