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--TEST-- Test rtrim() function : usage variations - test values for $charlist argument --FILE-- <?php /* Prototype : string rtrim ( string $str [, string $charlist ] ) * Description: Strip whitespace (or other characters) from the end of a string. * Source code: ext/standard/string.c */ echo "*** Testing rtrim() function: with unexpected inputs for 'charlist' 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 $inputs = array ( // integer values /*1*/ 0, 1, 255, 256, 2147483647, -2147483648, // float values /*7*/ 10.5, -20.5, 10.1234567e10, // array values /*10*/ array(), array(0), array(1, 2), // boolean values /*13*/ true, false, TRUE, FALSE, // null values /*17*/ NULL, null, // objects /*19*/ new sample(), // resource /*20*/ $file_handle, // undefined variable /*21*/ @$undefined_var, // unset variable /*22*/ @$unset_var ); // loop through with each element of the $inputs array to test rtrim() function $count = 1; foreach($inputs as $charlist) { echo "-- Iteration $count --\n"; // strip white space and any "minus" signs var_dump( rtrim("!---Hello World---!", $charlist) ); $count ++; } fclose($file_handle); //closing the file handle ?> ===DONE=== --EXPECTF-- *** Testing rtrim() function: with unexpected inputs for 'charlist' argument *** -- Iteration 1 -- string(19) "!---Hello World---!" -- Iteration 2 -- string(19) "!---Hello World---!" -- Iteration 3 -- string(19) "!---Hello World---!" -- Iteration 4 -- string(19) "!---Hello World---!" -- Iteration 5 -- string(19) "!---Hello World---!" -- Iteration 6 -- string(19) "!---Hello World---!" -- Iteration 7 -- string(19) "!---Hello World---!" -- Iteration 8 -- string(19) "!---Hello World---!" -- Iteration 9 -- string(19) "!---Hello World---!" -- Iteration 10 -- Warning: rtrim() expects parameter 2 to be string, array given in %s on line %d NULL -- Iteration 11 -- Warning: rtrim() expects parameter 2 to be string, array given in %s on line %d NULL -- Iteration 12 -- Warning: rtrim() expects parameter 2 to be string, array given in %s on line %d NULL -- Iteration 13 -- string(19) "!---Hello World---!" -- Iteration 14 -- string(19) "!---Hello World---!" -- Iteration 15 -- string(19) "!---Hello World---!" -- Iteration 16 -- string(19) "!---Hello World---!" -- Iteration 17 -- string(19) "!---Hello World---!" -- Iteration 18 -- string(19) "!---Hello World---!" -- Iteration 19 -- string(19) "!---Hello World---!" -- Iteration 20 -- Warning: rtrim() expects parameter 2 to be string, resource given in %s on line %d NULL -- Iteration 21 -- string(19) "!---Hello World---!" -- Iteration 22 -- string(19) "!---Hello World---!" ===DONE===