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Annotation of embedaddon/php/ext/standard/tests/array/usort_variation9.phpt, revision 1.1.1.1

1.1       misho       1: --TEST--
                      2: Test usort() function : usage variations - referenced variables
                      3: --FILE--
                      4: <?php
                      5: /* Prototype  : bool usort(array $array_arg, string $cmp_function)
                      6:  * Description: Sort an array by values using a user-defined comparison function 
                      7:  * Source code: ext/standard/array.c
                      8:  */
                      9: 
                     10: /*
                     11:  * Pass an array of referenced variables as $array_arg to test behaviour
                     12:  */
                     13: 
                     14: echo "*** Testing usort() : usage variation ***\n";
                     15: 
                     16: function cmp_function($value1, $value2)
                     17: {
                     18:   if($value1 == $value2) {
                     19:     return 0;
                     20:   }
                     21:   else if($value1 > $value2) {
                     22:     return 1;
                     23:   }
                     24:   else {
                     25:     return -1;
                     26:   }
                     27: }
                     28: 
                     29: // different variables which are used as elements of $array_arg
                     30: $value1 = -5; 
                     31: $value2 = 100;
                     32: $value3 = 0;
                     33: $value4 = &$value1;
                     34: 
                     35: // array_args an array containing elements with reference variables
                     36: $array_arg = array(
                     37:   0 => 10,
                     38:   1 => &$value4,
                     39:   2 => &$value2,
                     40:   3 => 200,
                     41:   4 => &$value3,
                     42: );
                     43: 
                     44: echo "\n-- Sorting \$array_arg containing different references --\n";
                     45: var_dump( usort($array_arg, 'cmp_function') );
                     46: var_dump($array_arg);
                     47: ?>
                     48: ===DONE===
                     49: --EXPECTF--
                     50: *** Testing usort() : usage variation ***
                     51: 
                     52: -- Sorting $array_arg containing different references --
                     53: bool(true)
                     54: array(5) {
                     55:   [0]=>
                     56:   &int(-5)
                     57:   [1]=>
                     58:   &int(0)
                     59:   [2]=>
                     60:   int(10)
                     61:   [3]=>
                     62:   &int(100)
                     63:   [4]=>
                     64:   int(200)
                     65: }
                     66: ===DONE===