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100 lines
2.2 KiB
PHP
100 lines
2.2 KiB
PHP
--TEST--
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Test array_walk() function : usage variations - different callback functions
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--FILE--
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<?php
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/* Prototype : bool array_walk(array $input, string $funcname [, mixed $userdata])
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* Description: Apply a user function to every member of an array
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* Source code: ext/standard/array.c
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*/
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/*
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* Passing different types of callback functions to array_walk()
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* without parameters
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* with less and more parameters
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*/
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echo "*** Testing array_walk() : callback function variation ***\n";
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$input = array('Apple', 'Banana', 'Mango', 'Orange');
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echo "-- callback function with both parameters --\n";
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function callback_two_parameter($value, $key)
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{
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// dump the arguments to check that they are passed
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// with proper type
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var_dump($key); // key
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var_dump($value); // value
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echo "\n"; // new line to separate the output between each element
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}
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var_dump( array_walk($input, 'callback_two_parameter'));
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echo "-- callback function with only one parameter --\n";
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function callback_one_parameter($value)
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{
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// dump the arguments to check that they are passed
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// with proper type
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var_dump($value); // value
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echo "\n"; // new line to separate the output between each element
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}
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var_dump( array_walk($input, 'callback_one_parameter'));
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echo "-- callback function without parameters --\n";
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function callback_no_parameter()
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{
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echo "callback3() called\n";
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}
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var_dump( array_walk($input, 'callback_no_parameter'));
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echo "-- passing one more parameter to function with two parameters --\n";
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var_dump( array_walk($input, 'callback_two_parameter', 10));
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echo "Done"
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?>
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--EXPECTF--
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*** Testing array_walk() : callback function variation ***
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-- callback function with both parameters --
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int(0)
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string(5) "Apple"
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int(1)
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string(6) "Banana"
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int(2)
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string(5) "Mango"
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int(3)
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string(6) "Orange"
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bool(true)
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-- callback function with only one parameter --
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string(5) "Apple"
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string(6) "Banana"
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string(5) "Mango"
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string(6) "Orange"
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bool(true)
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-- callback function without parameters --
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callback3() called
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callback3() called
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callback3() called
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callback3() called
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bool(true)
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-- passing one more parameter to function with two parameters --
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int(0)
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string(5) "Apple"
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int(1)
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string(6) "Banana"
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int(2)
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string(5) "Mango"
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int(3)
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string(6) "Orange"
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bool(true)
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Done
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