What are some common pitfalls when trying to display database values in a .tpl file using PHP?

One common pitfall when trying to display database values in a .tpl file using PHP is not properly escaping the values, which can lead to security vulnerabilities such as SQL injection attacks. To solve this issue, it is important to use prepared statements or parameterized queries to safely retrieve and display database values in the .tpl file. 

// Example code snippet to safely display database values in a .tpl file using prepared statements

// Assume $db is your database connection object

// Prepare a SQL statement
$stmt = $db->prepare("SELECT column_name FROM table_name WHERE condition = ?");
$condition = "some_value";
$stmt->bind_param("s", $condition);

// Execute the statement
$stmt->execute();

// Bind the result to a variable
$stmt->bind_result($column_name);

// Fetch the result
$stmt->fetch();

// Assign the fetched value to a variable for use in the .tpl file
$value_to_display = $column_name;

// Assign the variable to the template
$tpl->assign('value_to_display', $value_to_display);

Keywords

SQL injection variable escaping Smarty template engine database connection XSS vulnerabilities

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