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$input_array = array('a', 'b', 'c', 'd', 'e');
print_r(array_chunk($input_array, 2));

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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_map() ½«»Øµ÷º¯Êý×÷Óõ½¸ø¶¨Êý×éµÄµ¥ÔªÉÏ£¬ËüµÄ²ÎÊý¿ÉÒÔÊÇÒ»¸öÊý×飬Ҳ¿ÉÒÔÊǶà¸öÊý×飬»Øµ÷º¯ÊýµÄ²ÎÊý±ØÐëÒªºÍµ÷ÓÃËüµÄ²ÎÊýÏàͬ¡£

//µ¥¸ö²ÎÊýµÄÀý×Ó£¬½«Êý×éÖеÄÿ¸öÖµ£¬³ËÒÔËüµÄ3´Î·½
function cube($n) {
   return $n*$n*$n;
}

$a = array(1, 2, 3, 4, 5);
$b = array_map("cube", $a);
print_r($b);
?>

//¶à¸öÊý×é²ÎÊýµÄÀý×Ó

function show_Spanish($n, $m) {
   return "The number $n is called $m in Spanish";
}

function map_Spanish($n, $m) {
   return array ($n => $m);
}

$a = array(1, 2, 3, 4, 5);
$b = array("uno", "dos", "tres", "cuatro", "cinco");

$c = array_map("show_Spanish", $a, $b);
print_r($c);
$d = array_map("map_Spanish", $a , $b);
print_r($d);
?>
//Êä³ö½á¹û
// printout of $c
Array
(
    [0] => The number 1 is called uno in Spanish
    [1] => The number 2 is called dos in Spanish
    [2] => The number 3 is called tres in Spanish
    [3] => The number 4 is called cuatro in Spanish
    [4] => The number 5 is called cinco in Spanish
)
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