Delete Data In a Database
The DELETE FROM statement is used to delete records from a database table.
Syntax
DELETE FROM table_name
WHERE column_name = some_value
Note: SQL statements are not case sensitive. DELETE FROM is the same as delete from.
To get PHP to execute the statement above we must use the mysql_query() function. This function is used to send a query or command to a MySQL connection.
Example
Earlier in the tutorial we created a table named "Person". Here is how it looks:
FirstName | LastName | Age |
Peter | Griffin | 35 |
Glenn | Quagmire | 33 |
The following example deletes all the records in the "Person" table where LastName='Griffin':
<?php
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("my_db", $con);
mysql_query("DELETE FROM Person WHERE LastName='Griffin'");
mysql_close($con);
?>
After the deletion, the table will look like this:
FirstName | LastName | Age |
Glenn | Quagmire | 33 |
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