PHP and mysql

PHP is a server-side scripting language and is not used as a database by itself. However, PHP can use various databases to store and manage data, such as MySQL, PostgreSQL, Oracle, SQL Server, etc. If you are using a MySQL database and want to implement the function of automatically creating a sub-table in PHP when the data volume of the main table exceeds 50,000,...

To retrieve all tables from a database using PHP, you can use an SQL query to retrieve the names of all tables in a specific database and store the results in an array. Here is an example demonstrating how to query all tables in a database using PHP and MySQL: <?php // Define database connection details $servername = "localhost"; $username = "u...";

In PHP, you can execute multiple SQL statements at once through the mysqli_multi_query() function. The following is a sample code: &lt;?php // Define MySQL database connection parameters $host = "localhost"; $user = "root"; $password = "password";…

This function is mainly used to execute sql statements and return success or failure! 🔒 Hidden content: viewable after logging in/** * Execute the specified SQL statement * * @param string $sql SQL statement to be executed * @param string $db_host database host name * @param string $db_user database…

In PHP, you can use the SHOW TABLES command of the MySQL database to obtain the names of all data tables in the current database, and then use the DROP TABLE command to delete data tables with a specified prefix in batches. The following is a simple PHP function for batch deleting data tables with specified prefixes: function deleteTables($prefix) { /…

Very practical operation! PHP code: 🔒 Hidden content: Viewable after logging in&lt;?php // Connect to MySQL database $host = "localhost"; // MySQL server address $username = "your_username"; // MySQL username $password = "your_pa…

Manual modification of one or two tables in the database is fine! But I have more than 260 tables with data, and it’s exhausting to do it manually! At this time, you need to use PHP to make batch modifications! To replace the table prefix of a MySQL database, you need to perform the following steps: Connect to the MySQL database. Query all table names in the database. Iterate through each table, replacing its name with the new prefix. Execute an ALTER TABLE statement for each table to modify the table name...

I have published a similar article before "PHP obtains the remote .sql.zip file, then clears the data, and then imports the .sql.zip into the mysql database", but here is another function that is also available for personal testing! 🔒 Hidden content: members can view /** * Download the ZIP compressed file containing the SQL file from the remote URL, decompress the SQL file to the specified directory, and then import the data to M…

You can use PHP's mysqli extension to operate the MySQL database. The following is a sample code to obtain the remote .sql.zip file, then clear the database, and then import the .sql.zip into the mysql database: &lt;?php // Set the MySQL database connection information $host = 'localhost'; $dbname = 'my_database…

In PHP development websites, configuration files such as config.php generally require users to submit data for saving through the background. At this time, PHP is needed to operate this file! At this time, we need to use PHP to modify this PHP file. For example, the code in my config.php is like this: &lt;?php if(!defined('InEmpireCMS'))…