81 lines
2.2 KiB
PHP
81 lines
2.2 KiB
PHP
--TEST--
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Test usort() function : usage variations - Anonymous comparison function
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--FILE--
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<?php
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/*
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* Pass an anonymous comparison function as $cmp_function argument to test behaviour()
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*/
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echo "*** Testing usort() : usage variation ***\n";
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$cmp_function = function($value1, $value2) {
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if ($value1 == $value2) { return 0; }
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else if ($value1 > $value2) { return 1; }
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else { return -1; }
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};
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$array_arg = array(0 => 100, 1 => 3, 2 => -70, 3 => 24, 4 => 90);
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echo "\n-- Anonymous 'cmp_function' with parameters passed by value --\n";
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var_dump( usort($array_arg, $cmp_function) );
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var_dump($array_arg);
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$array_arg = array("b" => "Banana", "m" => "Mango", "a" => "Apple", "p" => "Pineapple");
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$cmp_function = function(&$value1, &$value2) {
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if ($value1 == $value2) { return 0; }
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else if ($value1 > $value2) { return 1; }
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else { return -1; }
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};
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echo "\n-- Anonymous 'cmp_function' with parameters passed by reference --\n";
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var_dump( usort($array_arg, $cmp_function) );
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var_dump($array_arg);
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?>
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--EXPECTF--
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*** Testing usort() : usage variation ***
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-- Anonymous 'cmp_function' with parameters passed by value --
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bool(true)
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array(5) {
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[0]=>
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int(-70)
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[1]=>
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int(3)
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[2]=>
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int(24)
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[3]=>
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int(90)
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[4]=>
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int(100)
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}
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-- Anonymous 'cmp_function' with parameters passed by reference --
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Warning: {closure}(): Argument #1 ($value1) must be passed by reference, value given in %s on line %d
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Warning: {closure}(): Argument #2 ($value2) must be passed by reference, value given in %s on line %d
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Warning: {closure}(): Argument #1 ($value1) must be passed by reference, value given in %s on line %d
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Warning: {closure}(): Argument #2 ($value2) must be passed by reference, value given in %s on line %d
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Warning: {closure}(): Argument #1 ($value1) must be passed by reference, value given in %s on line %d
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Warning: {closure}(): Argument #2 ($value2) must be passed by reference, value given in %s on line %d
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Warning: {closure}(): Argument #1 ($value1) must be passed by reference, value given in %s on line %d
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Warning: {closure}(): Argument #2 ($value2) must be passed by reference, value given in %s on line %d
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bool(true)
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array(4) {
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[0]=>
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string(5) "Apple"
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[1]=>
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string(6) "Banana"
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[2]=>
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string(5) "Mango"
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[3]=>
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string(9) "Pineapple"
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}
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