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106 lines
2.7 KiB
PHP
106 lines
2.7 KiB
PHP
--TEST--
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Test array_walk() function : basic functionality - associative array
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--FILE--
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<?php
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/* Prototype : bool array_walk(array $input, string $funcname [, mixed $userdata])
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* Description: Apply a user function to every member of an array
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* Source code: ext/standard/array.c
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*/
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echo "*** Testing array_walk() : basic functionality ***\n";
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// associative array
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$fruits = array("d" => "lemon", "a" => "orange", "b" => "banana", "c" => "apple");
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// User defined callback functions
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/* Prototype : test_alter(mixed $item, mixed $key, string $prefix)
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* Parameters : item - value in key/value pair
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* key - key in key/value pair
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* prefix - string to be added
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* Description : alters the array values by appending prefix string
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*/
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function test_alter(&$item, $key, $prefix)
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{
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// dump the arguments to check that they are passed
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// with proper type
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var_dump($item); // value
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var_dump($key); // key
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var_dump($prefix); // additional argument passed to callback function
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echo "\n"; // new line to separate the output between each element
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}
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/* Prototype : test_print(mixed $item, mixed $key)
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* Parameters : item - value in key/value pair
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* key - key in key/value pair
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* Description : prints the array values with keys
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*/
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function test_print($item, $key)
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{
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// dump the arguments to check that they are passed
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// with proper type
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var_dump($item); // value
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var_dump($key); // key
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echo "\n"; // new line to separate the output between each element
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}
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echo "-- Using array_walk with default parameters to show array contents --\n";
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var_dump(array_walk($fruits, 'test_print'));
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echo "-- Using array_walk with one optional parameter to modify contents --\n";
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var_dump (array_walk($fruits, 'test_alter', 'fruit'));
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echo "-- Using array_walk with default parameters to show modified array contents --\n";
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var_dump (array_walk($fruits, 'test_print'));
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echo "Done";
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?>
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--EXPECT--
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*** Testing array_walk() : basic functionality ***
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-- Using array_walk with default parameters to show array contents --
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string(5) "lemon"
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string(1) "d"
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string(6) "orange"
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string(1) "a"
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string(6) "banana"
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string(1) "b"
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string(5) "apple"
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string(1) "c"
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bool(true)
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-- Using array_walk with one optional parameter to modify contents --
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string(5) "lemon"
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string(1) "d"
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string(5) "fruit"
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string(6) "orange"
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string(1) "a"
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string(5) "fruit"
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string(6) "banana"
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string(1) "b"
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string(5) "fruit"
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string(5) "apple"
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string(1) "c"
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string(5) "fruit"
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bool(true)
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-- Using array_walk with default parameters to show modified array contents --
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string(5) "lemon"
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string(1) "d"
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string(6) "orange"
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string(1) "a"
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string(6) "banana"
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string(1) "b"
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string(5) "apple"
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string(1) "c"
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bool(true)
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Done
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