What are common errors or pitfalls to avoid when passing multiple variables from a form to a stored procedure in PHP?

One common pitfall when passing multiple variables from a form to a stored procedure in PHP is not properly sanitizing and validating the input data. This can lead to SQL injection attacks or unexpected behavior in the stored procedure. To avoid this, always use prepared statements and bind parameters to ensure the data is safe and correctly formatted before passing it to the stored procedure. 

// Assuming $conn is your database connection

// Sanitize and validate form input
$var1 = filter_var($_POST['var1'], FILTER_SANITIZE_STRING);
$var2 = filter_var($_POST['var2'], FILTER_VALIDATE_INT);

// Prepare the SQL query with placeholders
$stmt = $conn->prepare("CALL your_stored_procedure(?, ?)");

// Bind the parameters
$stmt->bind_param("si", $var1, $var2);

// Execute the stored procedure
$stmt->execute();

// Close the statement
$stmt->close();

Keywords

PHP form stored procedure variables errors

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