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140 lines
2.2 KiB
PHP
140 lines
2.2 KiB
PHP
--TEST--
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Test usort() function : usage variations - multi-dimensional arrays
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--FILE--
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<?php
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/* Prototype : bool usort(array $array_arg, string $cmp_function)
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* Description: Sort an array by values using a user-defined comparison function
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* Source code: ext/standard/array.c
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*/
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/*
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* Pass a multi-dimensional array as $array_arg argument to usort()
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* to test how array is re-ordered
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*/
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echo "*** Testing usort() : usage variation ***\n";
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function cmp_function($value1, $value2)
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{
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if($value1 == $value2) {
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return 0;
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}
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else if($value1 > $value2) {
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return 1;
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}
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else {
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return -1;
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}
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}
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$array_args = array(
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0 => array(2, 10, -1),
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1 => array(100),
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2 => array(),
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3 => array(0),
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4 => array(-1),
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5 => array(-9, 34, 54, 0, 20),
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6 => array(''),
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7 => array("apple", "Apple", "APPLE", "aPPle", "aPpLe")
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);
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$temp_array = $array_args;
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echo "\n-- Pass usort() a two-dimensional array --\n";
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// sorting array_arg as whole array
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var_dump( usort($temp_array, 'cmp_function') );
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echo "-- Array after call to usort() --\n";
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var_dump($temp_array);
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echo "\n-- Pass usort() a sub-array --\n";
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var_dump( usort($array_args[5], 'cmp_function') );
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echo "-- Array after call to usort() --\n";
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var_dump($array_args[5]);
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?>
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===DONE===
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--EXPECTF--
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*** Testing usort() : usage variation ***
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-- Pass usort() a two-dimensional array --
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bool(true)
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-- Array after call to usort() --
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array(8) {
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[0]=>
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array(0) {
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}
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[1]=>
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array(1) {
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[0]=>
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int(-1)
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}
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[2]=>
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array(1) {
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[0]=>
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int(0)
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}
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[3]=>
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array(1) {
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[0]=>
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string(0) ""
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}
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[4]=>
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array(1) {
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[0]=>
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int(100)
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}
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[5]=>
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array(3) {
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[0]=>
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int(2)
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[1]=>
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int(10)
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[2]=>
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int(-1)
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}
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[6]=>
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array(5) {
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[0]=>
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int(-9)
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[1]=>
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int(34)
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[2]=>
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int(54)
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[3]=>
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int(0)
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[4]=>
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int(20)
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}
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[7]=>
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array(5) {
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[0]=>
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string(5) "apple"
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[1]=>
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string(5) "Apple"
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[2]=>
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string(5) "APPLE"
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[3]=>
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string(5) "aPPle"
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[4]=>
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string(5) "aPpLe"
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}
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}
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-- Pass usort() a sub-array --
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bool(true)
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-- Array after call to usort() --
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array(5) {
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[0]=>
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int(-9)
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[1]=>
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int(0)
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[2]=>
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int(20)
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[3]=>
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int(34)
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[4]=>
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int(54)
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}
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===DONE===
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