Quick Answer
PHP form handling: HTML form POSTs to PHP script. PHP reads $_POST["fieldname"] for each field. Validate: check required fields are set and not empty, validate format (email, numbers). Sanitize: strip or escape dangerous characters (htmlspecialchars for output, parameterized queries for DB). Respond: process data, redirect with header() to prevent double-submit, or show errors.
Answer
Form handling retrieves data using $_GET or $_POST and includes validation and sanitization steps.
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Verified Answer
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