--TEST-- Test strval() function : usage variations - Pass different data types as strval --FILE-- 'red', 'item' => 'pen'), // null data /*20*/ NULL, null, // boolean data /*22*/ true, false, TRUE, FALSE, // empty data /*26*/ "", '', // object data /*28*/ new MyClass(), // resource /*29*/ $file_handle, // undefined data /*30*/ @$undefined_var, // unset data /*31*/ @$unset_var, ); // loop through each element of the array for strval $iterator = 1; foreach($values as $value) { echo "\n-- Iteration $iterator --\n"; var_dump( strval($value) ); $iterator++; }; ?> --EXPECTF-- *** Testing strval() : usage variations *** -- Iteration 1 -- string(1) "0" -- Iteration 2 -- string(1) "1" -- Iteration 3 -- string(5) "12345" -- Iteration 4 -- string(6) "-12345" -- Iteration 5 -- string(1) "2" -- Iteration 6 -- string(1) "8" -- Iteration 7 -- string(5) "12345" -- Iteration 8 -- string(6) "-12345" -- Iteration 9 -- string(1) "0" -- Iteration 10 -- string(1) "1" -- Iteration 11 -- string(5) "43981" -- Iteration 12 -- string(6) "-43981" -- Iteration 13 -- string(5) "100.5" -- Iteration 14 -- string(6) "-100.5" -- Iteration 15 -- string(13) "1001234567000" -- Iteration 16 -- string(14) "1.007654321E-8" -- Iteration 17 -- string(3) "0.5" -- Iteration 18 -- Warning: Array to string conversion in %s on line %d string(5) "Array" -- Iteration 19 -- Warning: Array to string conversion in %s on line %d string(5) "Array" -- Iteration 20 -- string(0) "" -- Iteration 21 -- string(0) "" -- Iteration 22 -- string(1) "1" -- Iteration 23 -- string(0) "" -- Iteration 24 -- string(1) "1" -- Iteration 25 -- string(0) "" -- Iteration 26 -- string(0) "" -- Iteration 27 -- string(0) "" -- Iteration 28 -- string(7) "MyClass" -- Iteration 29 -- string(%d) "Resource id #%d" -- Iteration 30 -- string(0) "" -- Iteration 31 -- string(0) ""