--TEST-- Test utf8_encode() function : usage variations - --FILE-- 'red', 'item' => 'pen'), // null data NULL, null, // boolean data true, false, TRUE, FALSE, // empty data "", '', // object data new aClass(), // undefined data $undefined_var, // unset data $unset_var, ); // loop through each element of the array for data foreach($values as $value) { echo @"\nArg value $value \n"; var_dump( utf8_encode($value) ); }; echo "Done"; ?> --EXPECTF-- *** Testing utf8_encode() : usage variations *** Arg value 0 string(1) "0" Arg value 1 string(1) "1" Arg value 12345 string(5) "12345" Arg value -2345 string(5) "-2345" Arg value 10.5 string(4) "10.5" Arg value -10.5 string(5) "-10.5" Arg value 101234567000 string(12) "101234567000" Arg value 1.07654321E-9 string(13) "1.07654321E-9" Arg value 0.5 string(3) "0.5" Arg value Array Warning: utf8_encode() expects parameter 1 to be string, array given in %s on line %d NULL Arg value Array Warning: utf8_encode() expects parameter 1 to be string, array given in %s on line %d NULL Arg value Array Warning: utf8_encode() expects parameter 1 to be string, array given in %s on line %d NULL Arg value Array Warning: utf8_encode() expects parameter 1 to be string, array given in %s on line %d NULL Arg value Array Warning: utf8_encode() expects parameter 1 to be string, array given in %s on line %d NULL Arg value string(0) "" Arg value string(0) "" Arg value 1 string(1) "1" Arg value string(0) "" Arg value 1 string(1) "1" Arg value string(0) "" Arg value string(0) "" Arg value string(0) "" Arg value Some Ascii Data string(15) "Some Ascii Data" Arg value string(0) "" Arg value string(0) "" Done