<?php
/**
* PHP MySQL Update data demo
*/
class UpdateDataDemo {
const DB_HOST = 'localhost';
const DB_NAME = 'classicmodels';
const DB_USER = 'root';
const DB_PASSWORD = '';
/**
* PDO instance
* @var PDO
*/
private $pdo = null;
/**
* Open the database connection
*/
public function __construct() {
// open database connection
$connStr = sprintf("mysql:host=%s;dbname=%s", self::DB_HOST, self::DB_NAME);
try {
$this->pdo = new PDO($connStr, self::DB_USER, self::DB_PASSWORD);
} catch (PDOException $e) {
die($e->getMessage());
}
}
/**
* Update an existing task in the tasks table
* @param string $subject
* @param string $description
* @param string $startDate
* @param string $endDate
* @return bool return true on success or false on failure
*/
public function update($id, $subject, $description, $startDate, $endDate) {
$task = [
':taskid' => $id,
':subject' => $subject,
':description' => $description,
':start_date' => $startDate,
':end_date' => $endDate];
$sql = 'UPDATE tasks
SET subject = :subject,
start_date = :start_date,
end_date = :end_date,
description = :description
WHERE task_id = :taskid';
$q = $this->pdo->prepare($sql);
return $q->execute($task);
}
/**
* close the database connection
*/
public function __destruct() {
// close the database connection
$this->pdo = null;
}
}
$obj = new UpdateDataDemo();
if ($obj->update(2, 'MySQL PHP Update Tutorial',
'MySQL PHP Update using prepared statement',
'2013-01-01',
'2013-01-01') !== false)
echo 'The task has been updated successfully';
else
echo 'Error updated the task';