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Tag: mysqli

Mysqli last insert id not work

I am trying to get last query insert id.but my code always return zero. My Code here return mysqli_insert_id($this->Cnn()); always return zero Answer Please check the definition of mysqli_insert_id:- The mysqli_insert_id() function returns the id (generated with AUTO_INCREMENT) used in the last query. It means either column in your table that have AUTO_INCREMENT value is not exist. Or No insertion

MySQLi Select to PHP variable

I wrote a PHP script with a database connection, which appears to work properly. The problem I’m having is in using a SELECT statement to fetch values from my database and assign those values to PHP variables. This is my table: If I copy the SQL into PHPMyAdmin, I get the right result, so I trust the query itself. I

How to use mysqli_query() in PHP?

I’m coding in PHP. I have the following mySQL table: I’m trying to use the mysqli_query function in PHP to DESCRIBE the table. Here’s my code: The documentation says For successful SELECT, SHOW, DESCRIBE or EXPLAIN queries mysqli_query() will return a mysqli_result object. But from there I don’t know how to print $result so that it shows the query results.

MySQLi query to loop through array and update multiple rows

I have an array like: And I want to loop through the array and update all of the rows where ID corresponds to the array key. Like: What would be the simplest way to do this, not particularly knowing how many array keys there are, and keeping it all in one query? Answer Note: My answer is based on the

How to fetch 3 columns from the same row in the result?

I’m trying to fix a code in an osCommerce store which is giving the following error on PHP 5.4: mysql_result(): supplied argument is not a valid MySQL result resource This is the code: I tried to change it and there are no more errors, but it’s still not working. Is this the correct way to do it? Answer No, this

When do I have to close mysqli (Database) connection?

For now, I have one connect.php file e.g. In every other PHP file that uses MySQL queries, I use “include ‘connect.php’;” For Instance on W3Schools, they create for every query a new connection and then close it after use. See here: w3schools.com: I’m not sure if they do it just for showing purpose, or if it is best practice to

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