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82 lines
1.8 KiB
PHP
82 lines
1.8 KiB
PHP
--TEST--
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Test uasort() function : usage variations - 'cmp_function' with reference argument
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--FILE--
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<?php
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/* Prototype : bool uasort(array $array_arg, string $cmp_function)
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* Description: Sort an array with a user-defined comparison function and maintain index association
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* Source code: ext/standard/array.c
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*/
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/* Testing uasort() functionality with comparison function having arguments as reference
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*/
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echo "*** Testing uasort() : 'cmp_function' with reference arguments ***\n";
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// comparison function
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/* Prototype : int cmp(mixed &$value1, mixed &$value2)
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* Parameters : $value1 and $value2 - values recieved by reference
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* Return value : 0 - if both values are same
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* 1 - if value1 is greater than value2
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* -1 - if value1 is less than value2
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* Description : compares value1 and value2
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*/
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function cmp(&$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 > $value2) {
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return 1;
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}
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else
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return -1;
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}
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// Int array with default keys
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$int_values = array(1, 8, 9, 3, 2, 6, 7);
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echo "-- Passing integer values to 'cmp_function' --\n";
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var_dump( uasort($int_values, 'cmp') );
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var_dump($int_values);
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// String array with default keys
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$string_values = array("Mango", "Apple", "Orange", "Banana");
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echo "-- Passing string values to 'cmp_function' --\n";
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var_dump( uasort($string_values, 'cmp') );
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var_dump($string_values);
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echo "Done"
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?>
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--EXPECTF--
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*** Testing uasort() : 'cmp_function' with reference arguments ***
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-- Passing integer values to 'cmp_function' --
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bool(true)
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array(7) {
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[0]=>
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int(1)
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[4]=>
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int(2)
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[3]=>
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int(3)
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[5]=>
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int(6)
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[6]=>
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int(7)
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[1]=>
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int(8)
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[2]=>
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int(9)
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}
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-- Passing string values to 'cmp_function' --
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bool(true)
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array(4) {
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[1]=>
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string(5) "Apple"
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[3]=>
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string(6) "Banana"
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[0]=>
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string(5) "Mango"
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[2]=>
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string(6) "Orange"
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}
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Done
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