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<?php
// includes the file that contains data for connecting to mysql database, and  PDO_MySQLi class
 include('../conn_mysql.php');
 
 // creates object with connection to MySQL
 $conn = new PDO_MySQLi($mysql);
 
 // UPDATE with corresponding placeholder names in the SQL statement, and the values into an associative array
 $sql = "UPDATE `testclass` SET `title` = :title WHERE `url` = :url";
 $vals = array('title'=>'JavaScript & jQuery', 'url'=>'http://coursesweb.net/javascript/');
 
 // executes the SQL query, passing the SQL query and the array with values
 $resql = $conn->sqlExecute($sql, $vals);
 
 // check if the SQL query succesfully performed, displays the number of affected rows
 if($resql) echo 'Updated succesfully '. $conn->affected_rows .' row';
 else echo $conn->error;
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