Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP array_walk_recursive() Function.
The array_walk_recursive() function applies the user-defined callback function to each element of the array. The array's keys and values are the parameters in the function.
The array_walk_recursive() function applies the user-defined callback function to each element of the array. The array's keys and values are the parameters in the function.
Syntax
Following below is the syntax to use this function -
array_walk_recursive( $array, $funcname [,$parameter])
Parameter Details
Sr.No | Parameter & Description |
---|---|
1 | array(Required) It specifies an array. |
2 | funcname(Required) The name of the user-made function. |
3 | paramter(Optional) It specifies a parameter to the user-made function. |
Return Value
This function returns TRUE on success and False on failure.
Example
Try out the below example -
<?php function call_back_function($value,$key) { echo "The key $key has the value $value \n"; } $input1 = array("a"=>"green", "b"=>"brown", "c"=>"blue" ); $input2 = array($input1, "d"=>"yellow", "e"=>"black"); array_walk_recursive($input2,"call_back_function"); ?>
Output
When the above code is executed, it will produce the following result -
The key a has the value green The key b has the value brown The key c has the value blue The key d has the value yellow The key e has the value black
Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the PHP array_arsort() Function.
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Thanks for reading and bye for now.