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array_walk_recursive

(PHP 5)

array_walk_recursiveApply a user function recursively to every member of an array

설명

bool array_walk_recursive ( array &$input , callback $funcname [, mixed $userdata ] )

Applies the user-defined function funcname to each element of the input array. This function will recur into deeper arrays.

인수

input

The input array.

funcname

Typically, funcname takes on two parameters. The input parameter's value being the first, and the key/index second.

Note: If funcname needs to be working with the actual values of the array, specify the first parameter of funcname as a reference. Then, any changes made to those elements will be made in the original array itself.

userdata

If the optional userdata parameter is supplied, it will be passed as the third parameter to the callback funcname .

반환값

성공할 경우 TRUE를, 실패할 경우 FALSE를 반환합니다.

예제

Example #1 array_walk_recursive() example

<?php
$sweet 
= array('a' => 'apple''b' => 'banana');
$fruits = array('sweet' => $sweet'sour' => 'lemon');

function 
test_print($item$key)
{
    echo 
"$key holds $item\n";
}

array_walk_recursive($fruits'test_print');
?>

위 예제의 출력:

a holds apple
b holds banana
sour holds lemon

You may notice that the key 'sweet' is never displayed. Any key that holds an array will not be passed to the function.

참고


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