ID: 43708 Comment by: will dot fitch at gmail dot com Reported By: mo at modejong dot com Status: Open Bug Type: MySQLi related Operating System: WinXP PHP Version: 5.2.5 New Comment:
The reason it is returning NULL is because the check never gets beyond the "zend_parse_method_parameters". It is expecting an object, and a boolean false is provided, therefore returning NULL. I would personally suggest issuing a warning and then returning NULL within the function itself. Finally, update the documentation to reflect this. Previous Comments: ------------------------------------------------------------------------ [2008-02-25 22:38:51] mo at modejong dot com The server version is reported as: 5.0.45-community-nt-log I don't know how to determine what the version of libmysql.dll is for this install. I got it as part of xampplite 1.6.4. ------------------------------------------------------------------------ [2008-02-18 15:23:45] [EMAIL PROTECTED] What MySQL version are you using and what version of the libmysql (I assume you do not use mysqlnd, do you) do you use? I'm asking because of http://bugs.mysql.com/bug.php?id=23383 . Ulf ------------------------------------------------------------------------ [2007-12-29 21:32:26] mo at modejong dot com Description: ------------ The mysqli_stmt_affected_rows implementation does not match the documentation for this function WRT return values when no rows are matched or when a SQL error is found. If you run the source code below, it should output: 1 (a) 2 (b) mysqli_stmt_affected_rows(): int(1) 1 (b) 2 (b) mysqli_stmt_affected_rows(): int(2) 1 (c) 2 (c) mysqli_stmt_affected_rows(): int(0) mysqli_stmt_affected_rows(): int(-1) When run in PHP 5.2.4, the final two lines are: mysqli_stmt_affected_rows(): int(-1) mysqli_stmt_affected_rows(): NULL The docs explicitly state that 0 will be returned when no rows match and -1 will be returned when an SQL error is found. The PHP impl should match the documentation. Reproduce code: --------------- <?php $link = mysqli_connect(); mysqli_select_db($link, "test"); $query = "DROP TABLE test"; $stmt = mysqli_prepare($link, $query); mysqli_stmt_execute($stmt); $query = "CREATE TABLE test (id INTEGER, data VARCHAR(255))"; $stmt = mysqli_prepare($link, $query); mysqli_stmt_execute($stmt); $query = "DELETE FROM test WHERE id=1"; $stmt = mysqli_prepare($link, $query); mysqli_stmt_execute($stmt); $query = "DELETE FROM test WHERE id=2"; $stmt = mysqli_prepare($link, $query); mysqli_stmt_execute($stmt); $query = "INSERT INTO test VALUES (2, 'b')"; $stmt = mysqli_prepare($link, $query); mysqli_stmt_execute($stmt); $query = "INSERT INTO test VALUES (1, 'a')"; $stmt = mysqli_prepare($link, $query); mysqli_stmt_execute($stmt); // Util to query and print the rows in the test table function query() { global $link; $query = "SELECT * FROM test"; $stmt = mysqli_prepare($link, $query); mysqli_stmt_execute($stmt); mysqli_stmt_bind_result($stmt, $id, $data); while (mysqli_stmt_fetch($stmt)) { echo "$id ($data)\n"; } return $stmt; } // Query the data query(); // Update data in one row $query = "UPDATE test SET data='b' WHERE id=1"; $stmt = mysqli_prepare($link, $query); mysqli_stmt_execute($stmt); echo "mysqli_stmt_affected_rows(): "; var_dump(mysqli_stmt_affected_rows($stmt)); // Query the data query(); // Update data in two rows $query = "UPDATE test SET data='c' WHERE data='b'"; $stmt = mysqli_prepare($link, $query); mysqli_stmt_execute($stmt); echo "mysqli_stmt_affected_rows(): "; var_dump(mysqli_stmt_affected_rows($stmt)); // Query the data $stmt = query(); // Invoking mysqli_stmt_affected_rows after a // SELECT statement should return zero affected rows. echo "mysqli_stmt_affected_rows(): "; var_dump(mysqli_stmt_affected_rows($stmt)); // Invoking mysqli_stmt_affected_rows after a // SQL error should return -1. error_reporting(0); $query = "SELECT * from table_that_does_not_exist"; $stmt = mysqli_prepare($link, $query); mysqli_stmt_execute($stmt); echo "mysqli_stmt_affected_rows(): "; var_dump(mysqli_stmt_affected_rows($stmt)); mysqli_close($link); ?> Expected result: ---------------- See description Actual result: -------------- See description ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=43708&edit=1
