What is the delete statement in php mysql
php mysql delete statement is Delete. The DELETE statement is used to delete rows from the database table. Its syntax is "DELETE FROM table_name WHERE some_column = some_value".
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PHP MySQL Delete
DELETE statement is used to delete rows from a database table.
Delete data in the database
The DELETE FROM statement is used to delete records from the database table.
Syntax
DELETE FROM table_name WHERE some_column = some_value
Note: Please note the WHERE clause in DELETE syntax. The WHERE clause specifies which records need to be deleted. If you want to omit the WHERE clause, all records will be deleted!
To learn more about SQL, visit our SQL tutorials.
In order for PHP to execute the above statement, we must use the mysqli_query() function. This function is used to send a query or command to the MySQL connection.
Example
Please look at the "Persons" table below:
<?php $con=mysqli_connect("localhost","username","password","database"); // 检测连接 if (mysqli_connect_errno()) { echo "连接失败: " . mysqli_connect_error(); } mysqli_query($con,"DELETE FROM Persons WHERE LastName='Griffin'"); mysqli_close($con); ?>
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Recovering deleted rows directly from the database is usually impossible unless there is a backup or transaction rollback mechanism. Key point: Transaction rollback: Execute ROLLBACK before the transaction is committed to recover data. Backup: Regular backup of the database can be used to quickly restore data. Database snapshot: You can create a read-only copy of the database and restore the data after the data is deleted accidentally. Use DELETE statement with caution: Check the conditions carefully to avoid accidentally deleting data. Use the WHERE clause: explicitly specify the data to be deleted. Use the test environment: Test before performing a DELETE operation.

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