The UPDATE statement is used to modify data in a table.
Syntax:
UPDATE table_name
SET column=value, column1=value1,...
WHERE someColumn=someValue
Example:
Earlier in the tutorial, we created a table named "Employee". Here is how it looks:
FirstName | LastName | Salary |
---|---|---|
Chris | benoit | 5000 |
Anna | Weston | 8000 |
The following example updates some data in the "employee" table:
Example:
<?php
// Database connection establishment
$con=mysqli_connect("example.com","alex","qwerty","db_name");
// Check connection
if (mysqli_connect_errno($con)) {
echo "MySQL database connection failed: " . mysqli_connect_error();
}
mysqli_query($con,"UPDATE employee SET salary = `10000`
WHERE FirstName = `Anna` AND LastName = `Weston`");
?>
After the update, the "employee" table will look like this:
FirstName | LastName | Salary |
---|---|---|
Chris | benoit | 5000 |
Anna | Weston | 10000 |