array_walk() function in PHP

The array_walk() method applies a user-defined function to each member of an array. Returns TRUE on success and FALSE on failure.

Syntax

array_walk(arr, custom_func, parameter)

Parameters

• arr- The specified array. Required.

• custom_func- User-defined function. Required.

• #parameter- Parameters set for the custom function. Optional.

Return value

The array_walk() function returns TRUE on success and FALSE on failure.

Example

The following is an example-

Live Demo

"; } $arr = array("p"=>"Tom","q"=>"Jack","r"=>"Amit"); array_walk($arr,"display"); ?>

Output

The following is the output-

p id : Student Tom q id : Student Jack r id : Student Amit

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