What potential pitfalls should be avoided when using limitQuery() in PEAR::DB for emulating the MySQL LIMIT option?

When using limitQuery() in PEAR::DB to emulate the MySQL LIMIT option, be cautious of potential SQL injection vulnerabilities if user input is directly used in the query. To avoid this, always sanitize and validate user input before incorporating it into the query. 

// Example of using limitQuery() with sanitized user input
$limit = isset($_GET['limit']) ? intval($_GET['limit']) : 10;
$offset = isset($_GET['offset']) ? intval($_GET['offset']) : 0;

// Sanitize and validate user input
$limit = max(0, min($limit, 100)); // Limit to a maximum of 100 rows
$offset = max(0, $offset); // Offset must be positive

// Use limitQuery() with sanitized input
$query = "SELECT * FROM table_name";
$limitedQuery = $db->limitQuery($query, $offset, $limit);
$result = $db->query($limitedQuery);

Keywords

PEAR::DB limitQuery() MySQL LIMIT emulation pitfalls

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