DELETE FROM table_name [WHERE …]

root@host# mysql –u root –p password;
Enter password:*******
mysql> use PRODUCTS;
Database changed
mysql> DELETE FROM products_tbl WHERE product_id=133;
mysql> SELECT * from products_tbl WHERE ID_number='133';
ERROR 1032 (HY000): Can't find record in 'products_tbl'

<?php
   dbhost = 'localhost:3036';dbuser = 'root';
   dbpass = 'rootpassword';conn = mysql_connect(dbhost,dbuser, dbpass);

   if(!conn ) {
      die('Could not connect: ' . mysql_error());
   }

   sql = 'DELETE FROM products_tbl WHERE product_id = 261';
   mysql_select_db('PRODUCTS');retval = mysql_query( sql,conn );

   if(! retval ) {
      die('Could not delete data: ' . mysql_error());
   }

   echo "Deleted data successfully\n";
   mysql_close(conn);
?>

mysql> Deleted data successfully
mysql> SELECT * from products_tbl WHERE ID_number='261';
ERROR 1032 (HY000): Can't find record in 'products_tbl'