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--TEST-- Test current() function : usage variations - arrays containing different data types --FILE-- <?php /* Prototype : mixed current(array $array_arg) * Description: Return the element currently pointed to by the internal array pointer * Source code: ext/standard/array.c * Alias to functions: pos */ /* * Pass arrays of different data types as $array_arg to current() to test behaviour */ echo "*** Testing current() : usage variations ***\n"; //get an unset variable $unset_var = 10; unset ($unset_var); // get a class class classA { public function __toString() { return "Class A object"; } } // heredoc string $heredoc = <<<EOT hello world EOT; // get a resource variable $fp = fopen(__FILE__, "r"); // arrays of different data types to be passed to $array_arg argument $inputs = array( // int data /*1*/ 'int' => array( 0, 1, 12345, -2345, ), // float data /*2*/ 'float' => array( 10.5, -10.5, 12.3456789000e10, 12.3456789000E-10, .5, ), // null data /*3*/ 'null' => array( NULL, null, ), // boolean data /*4*/ 'bool' => array( true, false, TRUE, FALSE, ), // empty data /*5*/ 'empty string' => array( "", '', ), /*6*/ 'empty array' => array( ), // string data /*7*/ 'string' => array( "string", 'string', $heredoc, ), // object data /*8*/ 'object' => array( new classA(), ), // undefined data /*9*/ 'undefined' => array( @$undefined_var, ), // unset data /*10*/ 'unset' => array( @$unset_var, ), // resource variable /*11*/ 'resource' => array( $fp ), ); // loop through each element of $inputs to check the behavior of current() $iterator = 1; foreach($inputs as $key => $input) { echo "\n-- Iteration $iterator : $key data --\n"; var_dump( current($input) ); $iterator++; }; fclose($fp); ?> ===DONE=== --EXPECTF-- *** Testing current() : usage variations *** -- Iteration 1 : int data -- int(0) -- Iteration 2 : float data -- float(10.5) -- Iteration 3 : null data -- NULL -- Iteration 4 : bool data -- bool(true) -- Iteration 5 : empty string data -- string(0) "" -- Iteration 6 : empty array data -- bool(false) -- Iteration 7 : string data -- string(6) "string" -- Iteration 8 : object data -- object(classA)#%d (0) { } -- Iteration 9 : undefined data -- NULL -- Iteration 10 : unset data -- NULL -- Iteration 11 : resource data -- resource(%d) of type (stream) ===DONE===