Can I mix MySQL APIs in PHP?
No, you can’t use mysql and mysqli together. They are separate APIs and the resources they create are incompatible with one another. There is a mysqli_close, though.
mysqli
Commands out of sync; you can’t run this command now
You can’t have two simultaneous queries because mysqli uses unbuffered queries by default (for prepared statements; it’s the opposite for vanilla mysql_query). You can either fetch the first one into an array and loop through that, or tell mysqli to buffer the queries (using $stmt->store_result()). See here for details.
How to solve “Fatal error: Class ‘MySQLi’ not found”?
Sounds like you just need to install MySQLi. If you think you’ve done that and still have a problem, please post your operating system and anything else that might help diagnose it further.
Call to undefined method mysqli_stmt::get_result
Please read the user notes for this method: http://php.net/manual/en/mysqli-stmt.get-result.php It requires the mysqlnd driver… If it isn’t installed on your webspace you will have to work with bind_result() & fetch()!
What is the difference between MySQL, MySQLi and PDO? [closed]
There are (more than) three popular ways to use MySQL from PHP. This outlines some features/differences PHP: Choosing an API: (DEPRECATED) The mysql functions are procedural and use manual escaping. MySQLi is a replacement for the mysql functions, with object-oriented and procedural versions. It has support for prepared statements. PDO (PHP Data Objects) is a … Read more
What to do with mysqli problems? Errors like mysqli_fetch_array(): Argument #1 must be of type mysqli_result and such
TL;DR Always have mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT); in your mysqli connection code and always check the PHP errors. Always replace every PHP variable in the SQL query with a question mark, and execute the query using prepared statement. It will help to avoid syntax errors of all sorts. Explanation Sometimes your MySQLi code produces an error … Read more
MySQL vs MySQLi when using PHP [closed]
If you have a look at MySQL Improved Extension Overview, it should tell you everything you need to know about the differences between the two. The main useful features are: an Object-oriented interface support for prepared statements support for multiple statements support for transactions enhanced debugging capabilities embedded server support.
mysqli or PDO – what are the pros and cons? [closed]
Well, you could argue with the object oriented aspect, the prepared statements, the fact that it becomes a standard, etc. But I know that most of the time, convincing somebody works better with a killer feature. So there it is: A really nice thing with PDO is you can fetch the data, injecting it automatically … Read more