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1.1       misho       1: --TEST--
                      2: Test array_intersect() function : basic functionality
                      3: --FILE--
                      4: <?php
                      5: /* Prototype  : array array_intersect(array $arr1, array $arr2 [, array $...])
                      6:  * Description: Returns the entries of arr1 that have values which are present in all the other arguments 
                      7:  * Source code: ext/standard/array.c
                      8: */
                      9: 
                     10: /*
                     11: * Testing the behavior of array_intersect() by passing different arrays for the arguments. 
                     12: * Function is tested by passing associative array as well as array with default keys.
                     13: */
                     14: 
                     15: echo "*** Testing array_intersect() : basic functionality ***\n";
                     16: 
                     17: // array with default keys
                     18: $arr_default_keys = array(1, 2, "hello", 'world');
                     19: 
                     20: // associative array
                     21: $arr_associative = array("one" => 1, "two" => 2);
                     22: 
                     23: // default key array for both $arr1 and $arr2 argument
                     24: var_dump( array_intersect($arr_default_keys, $arr_default_keys) );
                     25: 
                     26: // default key array for $arr1 and associative array for $arr2 argument
                     27: var_dump( array_intersect($arr_default_keys, $arr_associative) );
                     28: 
                     29: // associative array for $arr1 and default key array for $arr2
                     30: var_dump( array_intersect($arr_associative, $arr_default_keys) );
                     31: 
                     32: // associative array for both $arr1 and $arr2 argument
                     33: var_dump( array_intersect($arr_associative, $arr_associative) );
                     34: 
                     35: // more arrays to be intersected
                     36: $arr3 = array(2, 3, 4);
                     37: var_dump( array_intersect($arr_default_keys, $arr_associative, $arr3) );
                     38: var_dump( array_intersect($arr_associative, $arr_default_keys, $arr3, $arr_associative) );
                     39: 
                     40: echo "Done";
                     41: ?>
                     42: --EXPECTF--
                     43: *** Testing array_intersect() : basic functionality ***
                     44: array(4) {
                     45:   [0]=>
                     46:   int(1)
                     47:   [1]=>
                     48:   int(2)
                     49:   [2]=>
                     50:   string(5) "hello"
                     51:   [3]=>
                     52:   string(5) "world"
                     53: }
                     54: array(2) {
                     55:   [0]=>
                     56:   int(1)
                     57:   [1]=>
                     58:   int(2)
                     59: }
                     60: array(2) {
                     61:   ["one"]=>
                     62:   int(1)
                     63:   ["two"]=>
                     64:   int(2)
                     65: }
                     66: array(2) {
                     67:   ["one"]=>
                     68:   int(1)
                     69:   ["two"]=>
                     70:   int(2)
                     71: }
                     72: array(1) {
                     73:   [1]=>
                     74:   int(2)
                     75: }
                     76: array(1) {
                     77:   ["two"]=>
                     78:   int(2)
                     79: }
                     80: Done