PHP : array_walk_recursive() function
PHP: Apply a user function recursively to every member of an array
The array_walk_recursive() function apply a user defined function to every element of an array recursively. The user-defined function takes array's values and keys as parameters.
Version:
(PHP 5 and above)
Syntax:
array_walk_recursive(input_array, user_function, user_data)
Parameters:
| Name | Description | Required / Optional |
Type |
| input_array | The input array. | Required | Array |
| user_function | The name of the user-defined function. | Required | |
| user_data | Additional parameter. If it is supplied, it will be passed as the third parameter to the user_function. | Optional | Mixed* |
Return value:
TRUE on success or FALSE on failure.
Value Type: Boolean
Example:
<?php
function w3rfunction($value,$key)
{
echo "The key $key has the value $value<br />";
}
$tutorial1=array("x"=>"india","y"=>"Pakistan");
$tutorial2=array($tutorial1,"1"=>"China","2"=>"Japan");
array_walk_recursive($tutorial2,"w3rfunction");
?>
Output:
The key x has the value india The key y has the value Pakistan The key 1 has the value China The key 2 has the value Japan
Pictorial Presentation:
View the example in the browser
Practice here online :
See also
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