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array_walk() function in PHP
The array_walk() method applies a user-defined function to every member of an array. It returns TRUE on success and FALSE on failure.
Syntax
array_walk(arr, custom_func, parameter)
Parameters
arr − The specified array. Required.
custom_func − The user defined function. Required.
parameter − The parameter to be set for the custom function. Optional.
Return
The array_walk() function returns TRUE on success and FALSE on failure.
Example
The following is an example −
<?php
function display($val,$key) {
echo "$key id : Student $val<br>";
}
$arr = array("p"=>"Tom","q"=>"Jack","r"=>"Amit");
array_walk($arr,"display");
?>Output
The following is the output −
p id : Student Tom q id : Student Jack r id : Student Amit
Updated on: 24-Jun-2020
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