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Is it good to sanitize input for parameterized queries?
Yes. It’s always a good idea to sanitize the input before sending it to the database. Parameterized queries might save you from SQL injection attacks, but might not prove beneficial in case of stored XSS attacks.
How can parameterized queries Save you from SQL injection?
Parameterized queries might save you from SQL injection attacks, but might not prove beneficial in case of stored XSS attacks. If a user sends a malicious javascript code into your form, and you store it successfully in your database, and you display the same field elsewhere, the malicious script might run on the victim’s browser.
What is the problem with input sanitization in SQL?
Input sanitization is a horrible term that pretends you can wave a magic wand at data and make it “safe data”. The problem is that the definition of “safe” changes when the data is interpreted by different pieces of software. Data that may be safe to be embedded in an SQL query may not be safe for embedding in HTML.
How to avoid interpretation of parameterized SQL queries?
The best way to achieve this is to avoid interpretation of the data in the first place. Parametrized SQL queries is an excellent example of this; the parameters are never interpreted as SQL, they’re simply put in the database as, well, data. For many other situations, the data still needs to be embedded in other formats, say, HTML.
What is a good method to sanitize the whole$ _ post array?
This will sanitize your $_GET and $_POST arrays. Depends what its being used for. If you are inserting it into the database then mysql_real_escape_string () for quoted strings and type casting for numbers would be the way to go – well ideally prepared statements, but thats an entirely different matter.
Do you need to sanitize input in HTML?
You can also use an HTML sanitizer to sanitize the user input. Yes, you should always sanitize input data. Sanitation isn’t just about protecting you from injection, but also to validate types, restricted value (enums), ranges, etc..
What’s the best way to sanitize an email?
Moving onto your question about sending emails. Well, the following should suffice: All this does is basically strip tags and encode special characters. There is no correct way to do blanket sanitation. What sanitation method you need depends on what is done to the data. Sanitize the data directly before it is used.