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--TEST-- Test str_pad() function : usage variations - unexpected inputs for '$pad_string' 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_string' * and expected type for '$input' and '$pad_length' */ echo "*** Testing str_pad() function: with unexpected inputs for 'pad_string' 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_strings = array ( // integer values /*1*/ 0, 1, -2, 2147483647, -2147483648, // float values /*6*/ 10.5, -20.5, 10.1234567e10, // array values /*9*/ array(), array(0), array(1, 2), // boolean values /*12*/ true, false, TRUE, FALSE, // null vlaues /*16*/ NULL, null, // objects /*18*/ new sample(), // resource /*19*/ $file_handle, // undefined variable /*20*/ @$undefined_var, // unset variable /*21*/ @$unset_var ); //defining '$input' argument $input = "Test string"; $pad_length = 20; // loop through with each element of the $pad_strings array to test str_pad() function $count = 1; foreach($pad_strings as $pad_string) { echo "-- Iteration $count --\n"; var_dump( str_pad($input, $pad_length, $pad_string) ); $count ++; } fclose($file_handle); //closing the file handle ?> ===DONE=== --EXPECTF-- *** Testing str_pad() function: with unexpected inputs for 'pad_string' argument *** -- Iteration 1 -- string(20) "Test string000000000" -- Iteration 2 -- string(20) "Test string111111111" -- Iteration 3 -- string(20) "Test string-2-2-2-2-" -- Iteration 4 -- string(20) "Test string214748364" -- Iteration 5 -- string(20) "Test string-21474836" -- Iteration 6 -- string(20) "Test string10.510.51" -- Iteration 7 -- string(20) "Test string-20.5-20." -- Iteration 8 -- string(20) "Test string101234567" -- Iteration 9 -- Warning: str_pad() expects parameter 3 to be string, array given in %s on line %d NULL -- Iteration 10 -- Warning: str_pad() expects parameter 3 to be string, array given in %s on line %d NULL -- Iteration 11 -- Warning: str_pad() expects parameter 3 to be string, array given in %s on line %d NULL -- Iteration 12 -- string(20) "Test string111111111" -- Iteration 13 -- Warning: str_pad(): Padding string cannot be empty in %s on line %d NULL -- Iteration 14 -- string(20) "Test string111111111" -- Iteration 15 -- Warning: str_pad(): Padding string cannot be empty in %s on line %d NULL -- Iteration 16 -- Warning: str_pad(): Padding string cannot be empty in %s on line %d NULL -- Iteration 17 -- Warning: str_pad(): Padding string cannot be empty in %s on line %d NULL -- Iteration 18 -- string(20) "Test stringsample ob" -- Iteration 19 -- Warning: str_pad() expects parameter 3 to be string, resource given in %s on line %d NULL -- Iteration 20 -- Warning: str_pad(): Padding string cannot be empty in %s on line %d NULL -- Iteration 21 -- Warning: str_pad(): Padding string cannot be empty in %s on line %d NULL ===DONE===