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--TEST-- Test join() function : usage variations - unexpected values for 'glue' argument --FILE-- <?php /* Prototype : string join( string $glue, array $pieces ) * Description: Join array elements with a string * Source code: ext/standard/string.c * Alias of function: implode() */ /* * testing join() by passing different unexpected value for glue argument */ echo "*** Testing join() : usage variations ***\n"; // initialize all required variables $pieces = array("element1", "element2"); // get an unset variable $unset_var = 'string_val'; unset($unset_var); // get a resource variable $fp = fopen(__FILE__, "r"); // define a class class test { var $t = 10; function __toString() { return "testObject"; } } // array with different values $values = array ( // integer values 0, 1, 12345, -2345, // float values 10.5, -10.5, 10.1234567e10, 10.7654321E-10, .5, // array values array(), array(0), array(1), array(1, 2), array('color' => 'red', 'item' => 'pen'), // boolean values true, false, TRUE, FALSE, // objects new test(), // empty string "", '', // null vlaues NULL, null, // resource variable $fp, // undefined variable @$undefined_var, // unset variable @$unset_var ); // loop through each element of the array and check the working of join() // when $glue argument is supplied with different values echo "\n--- Testing join() by supplying different values for 'glue' argument ---\n"; $counter = 1; for($index = 0; $index < count($values); $index ++) { echo "-- Iteration $counter --\n"; $glue = $values [$index]; var_dump( join($glue, $pieces) ); $counter ++; } echo "Done\n"; ?> --EXPECTF-- *** Testing join() : usage variations *** --- Testing join() by supplying different values for 'glue' argument --- -- Iteration 1 -- string(17) "element10element2" -- Iteration 2 -- string(17) "element11element2" -- Iteration 3 -- string(21) "element112345element2" -- Iteration 4 -- string(21) "element1-2345element2" -- Iteration 5 -- string(20) "element110.5element2" -- Iteration 6 -- string(21) "element1-10.5element2" -- Iteration 7 -- string(28) "element1101234567000element2" -- Iteration 8 -- string(29) "element11.07654321E-9element2" -- Iteration 9 -- string(19) "element10.5element2" -- Iteration 10 -- Notice: Array to string conversion in %s on line %d string(0) "" -- Iteration 11 -- Notice: Array to string conversion in %s on line %d string(1) "0" -- Iteration 12 -- Notice: Array to string conversion in %s on line %d string(1) "1" -- Iteration 13 -- Notice: Array to string conversion in %s on line %d string(7) "1Array2" -- Iteration 14 -- Notice: Array to string conversion in %s on line %d string(11) "redArraypen" -- Iteration 15 -- string(17) "element11element2" -- Iteration 16 -- string(16) "element1element2" -- Iteration 17 -- string(17) "element11element2" -- Iteration 18 -- string(16) "element1element2" -- Iteration 19 -- string(26) "element1testObjectelement2" -- Iteration 20 -- string(16) "element1element2" -- Iteration 21 -- string(16) "element1element2" -- Iteration 22 -- string(16) "element1element2" -- Iteration 23 -- string(16) "element1element2" -- Iteration 24 -- string(%d) "element1Resource id #%delement2" -- Iteration 25 -- string(16) "element1element2" -- Iteration 26 -- string(16) "element1element2" Done