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1.1 misho 1: --TEST-- 2: Test key() function : usage variations 3: --FILE-- 4: <?php 5: /* Prototype : mixed key(array $array_arg) 6: * Description: Return the key of the element currently pointed to by the internal array pointer 7: * Source code: ext/standard/array.c 8: */ 9: 10: /* 11: * Test how the internal pointer is affected when two variables are referenced to each other 12: */ 13: 14: echo "*** Testing key() : usage variations ***\n"; 15: 16: $array1 = array ('zero', 'one', 'two'); 17: 18: echo "\n-- Initial position of internal pointer --\n"; 19: var_dump(key($array1)); 20: 21: // Test that when two variables are referenced to one another 22: // the internal pointer is the same for both 23: $array2 = &$array1; 24: 25: next($array1); 26: 27: echo "\n-- Position after calling next() --\n"; 28: echo "\$array1: "; 29: var_dump(key($array1)); 30: echo "\$array2: "; 31: var_dump(key($array2)); 32: ?> 33: ===DONE=== 34: --EXPECTF-- 35: *** Testing key() : usage variations *** 36: 37: -- Initial position of internal pointer -- 38: int(0) 39: 40: -- Position after calling next() -- 41: $array1: int(1) 42: $array2: int(1) 43: ===DONE===