Mysqli Last Error
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Mysqli_query Error
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Mysqli Connect Error
Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up mysqli->error: Is it for the last query http://www.w3schools.com/php/func_mysqli_error.asp only, or for the last error from the query group? up vote 1 down vote favorite I am new to mysqli, and trying to confirm that if I so something like the below, the errno will be set to the last error, if any, and not the error of the last query. Is this a decent practice or should I be checking for the error in http://stackoverflow.com/questions/319423/mysqli-error-is-it-for-the-last-query-only-or-for-the-last-error-from-the-que between every query? Thanks! $mysqli->autocommit(FALSE); $mysqli->query("INSERT INTO ....."); $mysqli->query("INSERT INTO ....."); $mysqli->query("INSERT INTO ....."); $mysqli->query("INSERT INTO ....."); $mysqli->query("INSERT INTO ....."); if ( 0==$mysqli->errno ) { $mysqli->commit(); } else { $mysqli->rollback(); // Handle error } php mysql mysqli transactions share|improve this question edited Mar 6 '09 at 16:51 Iraimbilanja asked Nov 26 '08 at 1:05 Eli 35.8k176478 add a comment| 4 Answers 4 active oldest votes up vote 3 down vote accepted mysqli_errno — Returns the error code for the most recent function call. share|improve this answer answered Nov 26 '08 at 1:10 Ray 1,61711319 add a comment| up vote 4 down vote No -- it reports the error code of the last mysqli function call. Zero means no error occurred on the last function call. So if one in the middle fails, you won't know about it by checking only at the end. In other words, yes, you need to check the error code after each function call. Note that an error is indicated by the return value of $mysqli->query() as well. Paraphrasing the example from the mysqli_errno doc: if (!$mysqli->query("INSERT ...")) { printf("Errorcode: %d\n", $mysqli->errno); } share|improve this answer answered Nov 26 '08 at 1:09 Bill Karwi
example showing how to use the MySQLi (MySQL improved) classes/objects to connect and query your database (and check for errors). If there are any questions, or you want to see different features, let https://www.daniweb.com/programming/web-development/code/434480/using-php-mysqli-with-error-checking me know. checking error example mysqli php asm int 3 end; pritaeas 1,895 13,867 posts since Jul 2006 Moderator Featured http://forum.kohanaframework.org/discussion/8189/how-to-see-the-error-of-the-last-query-with-database-module/p1 connect to your database // if you use a single database, passing it will simplify your queries $mysqli = @new mysqli('localhost', 'myuser', 'mypassword', 'mydatabase'); // mysqli->connect_errno will return zero if successful if ($mysqli->connect_errno) mysql error { echo '
There was an error connecting to the database!
'; if ($mysqliDebug) { // mysqli->connect_error returns the latest error message, // hopefully clarifying the problem // NOTE: supported as of PHP 5.2.9 echo $mysqli->connect_error; } // since there is no database connection your queries will fail, // quit processing die(); } // create a query that should return a single record // the backticks around the table mysqli last error and column names are optional // they are required only when a name matches a reserved word (e.g. `date`) $query = 'SELECT * FROM `mytable` ORDER BY `mycolumn` LIMIT 1'; // execute the query // passing the connection link as a parameter is optional // but useful if you are accessing more than one database // mysqli->query returns FALSE on error, and a result object or TRUE on success // the result (object or TRUE) depends on the query you execute $result = $mysqli->query($query); if (!$result and $mysqliDebug) { // the query failed and debugging is enabled echo "There was an error in query: $query
"; echo $mysqli->error; } if ($result) { // the query was successful // get the result (if any) // result->fetch_object returns NULL if there is no record if ($recordObj = $result->fetch_object()) { // we have a record so now we can use it // the columns are properties of the object echo $recordObj->mycolumn; } else { echo 'No record found.
'; } // when you are done with the result, free it $result->close(); } // now get multiple records $query = 'SELECT * FROM `mytable` ORDER BY `mycolumn` LIMIT 10'; $result = $mysqli->query($query); if (!$result and $mysqSupport How to see the error of the last query with Database Module? enridp February 2011 Hi! I can't find how to see the error of the last query with Database Module. In pure PHP we can do something like this ($db = mysqli instance)
$res = $db->query($query); if($res === FALSE) { echo $db->error; } Is possible to make something similar with Kohana? Thanks ! Enrique. xenakis February 2011 If there's an error it should show itself automatically in the stack trace, unless you removed the showing of errors. czukowski February 2011 Kohana::exception_handler() also logs the errors. enridp February 2011 Thanks, I was searching for something like "->error" in the source code of Database Module. But seeing it I found that is using mysql not mysqli ! why kohana is not using mysqli???? if Kohana claims to be full PHP5 I can't understand why is using mysql and not mysqli. Even more, how can be possible to use prepared statements with Kohana and MySQL if it is using mysql instead of mysqli? I'm very confused now... shadowhand February 2011 If there is a database error, an exception will be thrown with the database error as the exception message. if Kohana claims to be full PHP5 I can't understand why is using mysql and not mysqli No particularly good reason, other than mysqli tends to be slightly slower than mysql when we wrote the 3.0 class about a year ago. If anyone wants to contribute a good MySQLi class, we would take it. Even more, how can be possible to use prepared statements with Kohana and MySQL if it is using mysql instead of mysqli? It's not possible, but most people don't use prepared statements. Again, we would welcome a MySQLi class, but no one seems to be interested in writing it. zombor February 2011 It's not possible, but most people don't use prepared statements. Right, we don't even have a prepared statement API. enridp February 2011 And what if we use PDO? can we use prepared statements with PDO? with "prepared statements" I'm referin to this (from php.net): The query only needs to be parsed (or prepared) once, but can be executed multiple times with the same or different parameters. When the query is prepared, the database wi