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61 lines
1.5 KiB
PHP
61 lines
1.5 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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/* 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 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 = 'if($value1 == $value2) {return 0;} else if($value1 > $value2) {return 1;} else{return -1;}';
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$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($array_arg, create_function('$value1, $value2',$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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echo "\n-- Anonymous 'cmp_function' with parameters passed by reference --\n";
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var_dump( usort($array_arg, create_function('&$value1, &$value2', $cmp_function) ) );
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var_dump($array_arg);
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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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-- 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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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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===DONE===
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