array_map(PHP函式)

說明
array array_map (mix callback , array $arr1 [, array $... ] )
傳入參數：參數1是使用者自定的函式(callback function)的名稱，參數2到n是陣列型態的參數。
基本說明：依照使用者自定的函式，對陣列的元素組做處理。


function cube($n){
return($n * $n * $n);
}
$a = array(1, 2, 3, 4, 5);
$b = array_map("cube", $a);
print_r($b);

結果：

Array
(
[0] => 1
[1] => 8
[2] => 27
[3] => 64
[4] => 125
)


Example#2 array_map() - using more arrays

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);

結果

// 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
)
// printout of $d
Array
(
[0] => Array
(
[1] => uno
)
[1] => Array
(
[2] => dos
)
[2] => Array
(
[3] => tres
)
[3] => Array
(
[4] => cuatro
)
[4] => Array
(
[5] => cinco
)
)