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PHP MySql Update

In PHP, we can execute a update MySql statement to update records in the database table. First we need to create a MySql connection, write the sql update query, execute the query and to update records.

Example 1: Create a MySql connection, execute the update query to update records in the MySql table.

	$conn = mysqli_connect("localhost", "root" , "", "student");
	if($conn === false){
		die("ERROR: Could not connect to database.");
	$sql = "update book set class=3 where id=3";
	$result = mysqli_query($conn, $sql);
		echo "record updated";
		echo "error";