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--TEST--
Test array_walk_recursive() function : usage variations - different callback functions
--FILE--
<?php
/* Prototype : bool array_walk_recursive(array $input, string $funcname [, mixed $userdata])
* Description: Apply a user function to every member of an array
* Source code: ext/standard/array.c
*/
/*
* Passing different types of callback functions to array_walk_recursive()
* without parameters
* with less and more parameters
*/
echo "*** Testing array_walk_recursive() : callback function variation ***\n";
$input = array(array('Apple', 'Banana'), 'Mango', array('Orange'));
echo "-- callback function with both parameters --\n";
function callback_two_parameter($value, $key)
{
// dump the arguments to check that they are passed
// with proper type
var_dump($key); // key
var_dump($value); // value
echo "\n"; // new line to separate the output between each element
}
var_dump( array_walk_recursive($input, 'callback_two_parameter'));
echo "-- callback function with only one parameter --\n";
function callback_one_parameter($value)
{
// dump the arguments to check that they are passed
// with proper type
var_dump($value); // value
echo "\n"; // new line to separate the output between each element
}
var_dump( array_walk_recursive($input, 'callback_one_parameter'));
echo "-- callback function without parameters --\n";
function callback_no_parameter()
{
echo "callback3() called\n";
}
var_dump( array_walk_recursive($input, 'callback_no_parameter'));
echo "-- passing one more parameter to function with two parameters --\n";
var_dump( array_walk_recursive($input, 'callback_two_parameter', 10));
echo "Done"
?>
--EXPECTF--
*** Testing array_walk_recursive() : callback function variation ***
-- callback function with both parameters --
int(0)
string(5) "Apple"
int(1)
string(6) "Banana"
int(1)
string(5) "Mango"
int(0)
string(6) "Orange"
bool(true)
-- callback function with only one parameter --
string(5) "Apple"
string(6) "Banana"
string(5) "Mango"
string(6) "Orange"
bool(true)
-- callback function without parameters --
callback3() called
callback3() called
callback3() called
callback3() called
bool(true)
-- passing one more parameter to function with two parameters --
int(0)
string(5) "Apple"
int(1)
string(6) "Banana"
int(1)
string(5) "Mango"
int(0)
string(6) "Orange"
bool(true)
Done