Posts Tagged ‘PHP Database tutorial’

PHP MySQL Delete Data

The DELETE FROM statement is used to delete records from a database table.

Syntax

DELETE FROM table_name
WHERE some_column = some_value

Note: Notice the WHERE clause in the DELETE syntax. The WHERE clause specifies which record or records that should be deleted. If you omit the WHERE clause, all records will be deleted!

To get PHP to execute the statement above we must use the mysqli_query() function. This function is used to send a query or command to a MySQL connection.

Example

Look at the following "Persons" table:

FirstName LastName Age
Peter

Griffin

35
Glenn

Quagmire

33

The following example deletes all the records in the "Persons" table where LastName='Griffin':

<?php
$con=mysqli_connect("example.com","peter","abc123","my_db");
// Check connection
if (mysqli_connect_errno())
  {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
  }

mysqli_query($con,"DELETE FROM Persons WHERE LastName='Griffin'");

mysqli_close($con);
?>

After the deletion, the table will look like this:

FirstName LastName Age
Glenn

Quagmire

33

 

Designed for Mytoptutorials.com