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--TEST-- Test str_pad() function : usage variations - unexpected inputs for '$pad_length' argument --FILE-- <?php /* Prototype : string str_pad ( string $input , int $pad_length [, string $pad_string [, int $pad_type ]] ) * Description: Pad a string to a certain length with another string * Source code: ext/standard/string.c */ /* Test str_pad() function: with unexpected inputs for '$pad_length' * and expected type for '$input' */ echo "*** Testing str_pad() function: with unexpected inputs for 'pad_length' argument ***\n"; //get an unset variable $unset_var = 'string_val'; unset($unset_var); //defining a class class sample { public function __toString() { return "sample object"; } } //getting the resource $file_handle = fopen(__FILE__, "r"); // array with different values for $input $pad_lengths = array ( // integer values /*1*/ 0, 1, -2, 255, // float values /*5*/ 10.5, -20.5, 10.12345e2, // array values /*8*/ array(), array(0), array(1, 2), // boolean values /*11*/ true, false, TRUE, FALSE, // null vlaues /*15*/ NULL, null, // objects /*17*/ new sample(), // resource /*18*/ $file_handle, // undefined variable /*19*/ @$undefined_var, // unset variable /*20*/ @$unset_var ); //defining '$input' argument $input = "Test string"; // loop through with each element of the $pad_lengths array to test str_pad() function $count = 1; foreach($pad_lengths as $pad_length) { echo "-- Iteration $count --\n"; var_dump( str_pad($input, $pad_length) ); $count ++; } fclose($file_handle); //closing the file handle ?> ===DONE=== --EXPECTF-- *** Testing str_pad() function: with unexpected inputs for 'pad_length' argument *** -- Iteration 1 -- string(11) "Test string" -- Iteration 2 -- string(11) "Test string" -- Iteration 3 -- string(11) "Test string" -- Iteration 4 -- string(255) "Test string " -- Iteration 5 -- string(11) "Test string" -- Iteration 6 -- string(11) "Test string" -- Iteration 7 -- string(1012) "Test string " -- Iteration 8 -- Warning: str_pad() expects parameter 2 to be long, array given in %s on line %d NULL -- Iteration 9 -- Warning: str_pad() expects parameter 2 to be long, array given in %s on line %d NULL -- Iteration 10 -- Warning: str_pad() expects parameter 2 to be long, array given in %s on line %d NULL -- Iteration 11 -- string(11) "Test string" -- Iteration 12 -- string(11) "Test string" -- Iteration 13 -- string(11) "Test string" -- Iteration 14 -- string(11) "Test string" -- Iteration 15 -- string(11) "Test string" -- Iteration 16 -- string(11) "Test string" -- Iteration 17 -- Warning: str_pad() expects parameter 2 to be long, object given in %s on line %d NULL -- Iteration 18 -- Warning: str_pad() expects parameter 2 to be long, resource given in %s on line %d NULL -- Iteration 19 -- string(11) "Test string" -- Iteration 20 -- string(11) "Test string" ===DONE===