What are the potential issues that can arise when retrieving data from MySQL databases in PHP using session variables?

One potential issue that can arise when retrieving data from MySQL databases in PHP using session variables is the risk of SQL injection attacks if the session variables are not properly sanitized. To solve this issue, always use prepared statements with parameterized queries when retrieving data from the database. 

// Retrieve data from MySQL database using session variable with prepared statement
$stmt = $pdo->prepare("SELECT * FROM table WHERE column = :value");
$stmt->bindParam(':value', $_SESSION['variable']);
$stmt->execute();
$result = $stmt->fetch();

Keywords

MySQL PHP session variables data retrieval potential issues

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