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PHP array_walk_recursive() Function
PHP array_walk_recursive() Function
PHP array_walk_recursive() function is used to run each elements of the given input array in to a user-defined function recursively. The keys and the values of the array are used as the parameter for the user-defined function. It is similar to the array_walk() function but the difference is that it passes the elements to the user-defined function recursively. It returns a Boolean value TRUE on success and False on failure.
Syntax:
array_walk_recursive(array, function, parameter...);
Parameter Values
| Parameter | Description |
|---|---|
| array | This is a requiredparameter.This parameter definesthe given array. |
| function | This is a requiredparameter.This parameter definesthe name of the user-defined function. |
| parameter,... | This is anoptionalparameter.This parameter definesa parameter to the user-defined function. |
Here is an example of array_walk_recursive() function in PHP:
<html>
<body>
<?php
function myfunction($value,$key)
{
echo "$key has the value $value<br>";
}
$x=array("a"=>"1","b"=>"2","c"=>"3");
$y=array($x,"d"=>"4","e"=>"44");
array_walk_recursive($y,"myfunction");
?>
</body>
</html>
Output:
a has the value 1 b has the value 2 c has the value 3 d has the value 4 e has the value 44
Example 2:
<html>
<body>
<?php
function myfunction($value,$key,$p)
{
echo "$key $p $value<br>";
}
$x=array("a"=>"1","b"=>"2","c"=>"3");
$y=array($x,"d"=>"4","e"=>"44");
array_walk_recursive($y,"myfunction","has the value");
?>
</body>
</html>
Output:
a has the value 1 b has the value 2 c has the value 3 d has the value 4 e has the value 44
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