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1.1     ! misho       1: --TEST--
        !             2: Test array_map() function : basic functionality
        !             3: --FILE--
        !             4: <?php
        !             5: /* Prototype  : array array_map  ( callback $callback  , array $arr1  [, array $...  ] )
        !             6:  * Description: Applies the callback to the elements of the given arrays
        !             7:  * Source code: ext/standard/array.c
        !             8:  */
        !             9: 
        !            10: echo "*** Testing array_map() : basic functionality ***\n";
        !            11: 
        !            12: function multiply($p, $q) {
        !            13:   return ($p * $q);
        !            14: }
        !            15: 
        !            16: function square($p) {
        !            17:   return ($p * $p);
        !            18: }
        !            19: 
        !            20: function concatenate($a, $b) {
        !            21:   return "$a = $b";
        !            22: }
        !            23: 
        !            24: // integer array
        !            25: $arr1 = array(1, 2, 3);
        !            26: $arr2 = array(4, 5, 6);
        !            27: 
        !            28: echo "-- With two integer array --\n";
        !            29: var_dump( array_map('multiply', $arr1, $arr2) );
        !            30: 
        !            31: echo "-- With single integer array --\n";
        !            32: var_dump( array_map('square', $arr1) );
        !            33: 
        !            34: // string array
        !            35: $arr1 = array("one", "two");
        !            36: $arr2 = array("single", "double");
        !            37: 
        !            38: echo "-- With string array --\n";
        !            39: var_dump( array_map('concatenate', $arr1, $arr2) );
        !            40: 
        !            41: echo "Done";
        !            42: ?>
        !            43: --EXPECTF--
        !            44: *** Testing array_map() : basic functionality ***
        !            45: -- With two integer array --
        !            46: array(3) {
        !            47:   [0]=>
        !            48:   int(4)
        !            49:   [1]=>
        !            50:   int(10)
        !            51:   [2]=>
        !            52:   int(18)
        !            53: }
        !            54: -- With single integer array --
        !            55: array(3) {
        !            56:   [0]=>
        !            57:   int(1)
        !            58:   [1]=>
        !            59:   int(4)
        !            60:   [2]=>
        !            61:   int(9)
        !            62: }
        !            63: -- With string array --
        !            64: array(2) {
        !            65:   [0]=>
        !            66:   string(12) "one = single"
        !            67:   [1]=>
        !            68:   string(12) "two = double"
        !            69: }
        !            70: Done