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120 lines
2.1 KiB
PHP
120 lines
2.1 KiB
PHP
--TEST--
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Test usort() function : basic functionality
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--FILE--
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<?php
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/* Prototype : bool usort(array $array_arg, string $cmp_function)
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* Description: Sort an array by values using a user-defined comparison function
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* Source code: ext/standard/array.c
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*/
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/*
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* Test basic functionality of usort() with indexed and associative arrays
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*/
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echo "*** Testing usort() : basic functionality ***\n";
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function cmp($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 "\n-- Numeric array with default keys --\n";
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var_dump( usort($int_values, 'cmp') );
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var_dump($int_values);
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// String array with default keys
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$string_values = array("This", "is", 'a', "test");
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echo "\n-- String array with default keys --\n";
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var_dump( usort($string_values, 'cmp') );
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var_dump($string_values);
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// Associative array with numeric keys
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$numeric_key_arg = array(1=> 1, 2 => 2, 3 => 7, 5 => 4, 4 => 9);
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echo "\n-- Associative array with numeric keys --\n";
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var_dump( usort($numeric_key_arg, 'cmp') );
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var_dump($numeric_key_arg);
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// Associative array with string keys
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$string_key_arg = array('one' => 4, 'two' => 2, 'three' => 1, 'four' => 10);
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echo "\n-- Associative array with string keys --\n";
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var_dump( usort($string_key_arg, 'cmp') );
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var_dump($string_key_arg);
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?>
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===DONE===
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--EXPECTF--
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*** Testing usort() : basic functionality ***
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-- Numeric array with default keys --
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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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[1]=>
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int(2)
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[2]=>
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int(3)
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[3]=>
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int(6)
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[4]=>
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int(7)
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[5]=>
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int(8)
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[6]=>
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int(9)
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}
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-- String array with default keys --
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bool(true)
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array(4) {
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[0]=>
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string(4) "This"
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[1]=>
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string(1) "a"
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[2]=>
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string(2) "is"
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[3]=>
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string(4) "test"
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}
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-- Associative array with numeric keys --
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bool(true)
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array(5) {
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[0]=>
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int(1)
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[1]=>
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int(2)
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[2]=>
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int(4)
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[3]=>
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int(7)
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[4]=>
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int(9)
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}
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-- Associative array with string keys --
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bool(true)
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array(4) {
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[0]=>
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int(1)
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[1]=>
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int(2)
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[2]=>
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int(4)
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[3]=>
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int(10)
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}
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===DONE===
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