--TEST--
Test strtr() function : usage variations - unexpected inputs for 'to' argument
--FILE--
<?php
/* Prototype  : string strtr(string $str, string $from[, string $to]);
                string strtr(string $str, array $replace_pairs);
 * Description: Translates characters in str using given translation tables
 * Source code: ext/standard/string.c
*/

/* Test strtr() function: with unexpected inputs for 'to' 
 *  and expected types for 'str' & 'from' arguments 
*/

echo "*** Testing strtr() function: with unexpected inputs for 'to' ***\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");

//defining 'str' argument
$str = "012atm";

//defining 'from' argument
$from = "atm012";

// array of values for 'to' argument
$to_arr =  array (

		  // integer values
/*1*/	  0,
		  1,
		  -2,
		
		  // float values
/*4*/	  10.5,
		  -20.5,
		  10.12345675e10,
		
		  // array values
/*7*/	  array(),
		  array(0),
		  array(1, 2),
		
		  // boolean values
/*10*/	  true,
		  false,
		  TRUE,
		  FALSE,
		
		  // null vlaues
/*14*/	  NULL,
		  null,
		
		  // objects
/*16*/	  new sample(),
		
		  // resource
/*17*/	  $file_handle,
		
		  // undefined variable
/*18*/	  @$undefined_var,
		
		  // unset variable
/*19*/	  @$unset_var
);

// loop through with each element of the $to array to test strtr() function
$count = 1;
for($index = 0; $index < count($to_arr); $index++) {
  echo "\n-- Iteration $count --\n";
  $to = $to_arr[$index];
  var_dump( strtr($str, $from, $to) );
  $count ++;
}

fclose($file_handle);  //closing the file handle

?>
===DONE===
--EXPECTF--
*** Testing strtr() function: with unexpected inputs for 'to' ***

-- Iteration 1 --
string(6) "0120tm"

-- Iteration 2 --
string(6) "0121tm"

-- Iteration 3 --
string(6) "012-2m"

-- Iteration 4 --
string(6) "51210."

-- Iteration 5 --
string(6) ".52-20"

-- Iteration 6 --
string(6) "234101"

-- Iteration 7 --

Warning: strtr() expects parameter 3 to be string, array given in %s on line %d
NULL

-- Iteration 8 --

Warning: strtr() expects parameter 3 to be string, array given in %s on line %d
NULL

-- Iteration 9 --

Warning: strtr() expects parameter 3 to be string, array given in %s on line %d
NULL

-- Iteration 10 --
string(6) "0121tm"

-- Iteration 11 --
string(6) "012atm"

-- Iteration 12 --
string(6) "0121tm"

-- Iteration 13 --
string(6) "012atm"

-- Iteration 14 --
string(6) "012atm"

-- Iteration 15 --
string(6) "012atm"

-- Iteration 16 --
string(6) "plesam"

-- Iteration 17 --

Warning: strtr() expects parameter 3 to be string, resource given in %s on line %d
NULL

-- Iteration 18 --
string(6) "012atm"

-- Iteration 19 --
string(6) "012atm"
===DONE===