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108 lines
2.0 KiB
PHP
108 lines
2.0 KiB
PHP
--TEST--
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Test array_map() function : usage variations - callback function with different return types
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--FILE--
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<?php
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/* Prototype : array array_map ( callback $callback , array $arr1 [, array $... ] )
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* Description: Applies the callback to the elements of the given arrays
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* Source code: ext/standard/array.c
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*/
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/*
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* Test array_map() by passing different callback function returning:
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* int, string, bool, null values
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*/
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echo "*** Testing array_map() : callback with diff return value ***\n";
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$array1 = array(1, 2, 3);
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$array2 = array(3, 4, 5);
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echo "-- with integer return value --\n";
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function callback_int($a, $b)
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{
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return $a + $b;
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}
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var_dump( array_map('callback_int', $array1, $array2));
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echo "-- with string return value --\n";
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function callback_string($a, $b)
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{
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return "$a"."$b";
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}
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var_dump( array_map('callback_string', $array1, $array2));
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echo "-- with bool return value --\n";
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function callback_bool($a, $b)
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{
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return TRUE;
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}
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var_dump( array_map('callback_bool', $array1, $array2));
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echo "-- with null return value --\n";
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function callback_null($array1)
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{
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return NULL;
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}
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var_dump( array_map('callback_null', $array1));
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echo "-- with no return value --\n";
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function callback_without_ret($arr1)
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{
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echo "callback_without_ret called\n";
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}
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var_dump( array_map('callback_without_ret', $array1));
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echo "Done";
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?>
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--EXPECTF--
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*** Testing array_map() : callback with diff return value ***
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-- with integer return value --
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array(3) {
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[0]=>
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int(4)
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[1]=>
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int(6)
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[2]=>
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int(8)
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}
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-- with string return value --
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array(3) {
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[0]=>
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string(2) "13"
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[1]=>
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string(2) "24"
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[2]=>
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string(2) "35"
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}
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-- with bool return value --
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array(3) {
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[0]=>
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bool(true)
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[1]=>
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bool(true)
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[2]=>
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bool(true)
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}
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-- with null return value --
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array(3) {
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[0]=>
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NULL
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[1]=>
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NULL
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[2]=>
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NULL
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}
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-- with no return value --
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callback_without_ret called
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callback_without_ret called
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callback_without_ret called
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array(3) {
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[0]=>
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NULL
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[1]=>
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NULL
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[2]=>
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NULL
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}
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Done
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