What are the deprecated functions in PHP related to MySQL queries and what are the recommended alternatives?

Deprecated functions in PHP related to MySQL queries include `mysql_query()`, `mysql_connect()`, and `mysql_fetch_array()`. These functions have been deprecated as of PHP 5.5.0 and removed in PHP 7.0.0 in favor of the MySQLi (MySQL Improved) extension or PDO (PHP Data Objects) extension. It is recommended to use MySQLi or PDO for database operations as they offer improved security, performance, and support for prepared statements. 

// Using MySQLi extension
$mysqli = new mysqli('localhost', 'username', 'password', 'database');
$result = $mysqli->query("SELECT * FROM table");

// Using PDO extension
$pdo = new PDO('mysql:host=localhost;dbname=database', 'username', 'password');
$stmt = $pdo->query("SELECT * FROM table");

Keywords

mysql_query mysql_connect mysql_fetch_array mysqli_query PDO

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