How to query MySQL database using PHP?

How to query MySQL database using PHP?

First instantiate PDO in PHP code. The instantiation parameters need to be passed in DNS, data user name and database password;

$dbDatas = parse_ini_file(DB_FILE);
$dbOptions = [
    \PDO::ATTR_DEFAULT_FECTH_MODE => \PDO::FETCH_OBJ,
    \PDO::ATTR_ERRMODE => \PDO::ERRMODE_EXCEPTION
];

$dsn = sprintf(
    'mysql:dbname=%s;host=%s',
    $dbDatas['dbname'],
    $dbDatas['host']
);

$this->cn = new \PDO($dsn, $dbDatas['user'], $dbDatas['password'],
$dbOptions);
$this->cn->exec('SET CHARACTER SET UTF8');

Then write the database query statement template;

$sql = "SELECT * FROM table_name";

Then use the PDO object to execute the statement;

$stmt = $pdo->prepare($sql) ;
$stmt->execute();

Finally get the result set.

 $row = $stmt->fetchAll();

Recommended tutorial: "PHP Tutorial"

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