Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
1.2k views
in Technique[技术] by (71.8m points)

what is a good method to sanitize the whole $_POST array in php?

I have a form with a lot of variables which is then sending an email, rather than sanitizing each $_POST value with filter_var($_POST['var'], FILTER_SANITIZE_STRING); I was after a more simple piece of code. I came up with the below, which seems to work as I believe the default action is FILTER_SANITIZE_STRING, but I was just wondering what peoples opinions are, and if this is not good practice, perhaps you could tell me why? The $_POST values are then individually embedded into new variables, so I would only be using array_map just at the start to sanitize everything...

$_POST = array_map('filter_var', $_POST);

Thank you for your replies, to give you a little more information, basically:

I have 20-30 input fields in a form which are being captured, the data is then displayed to the user to check their input, variables are then sanitized, the user is then sent an email and then finally the details are entered into a db.

currently I am sanitizing using the above array_map function, as well as FILTER_SANITIZE_EMAIL on the email address before sending an email and then escaping the input using mysql_real_escape_string() before the insert into the db. Without getting into prepared statements etc.. do you think I should be doing anything additionally? thanks again!

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

If the type of each of your input variables is a string and you want to sanitize them all at once, you can use:

// prevent XSS
$_GET   = filter_input_array(INPUT_GET, FILTER_SANITIZE_STRING);
$_POST  = filter_input_array(INPUT_POST, FILTER_SANITIZE_STRING);

This will sanitize your $_GET and $_POST arrays.

Seen here: PHP -Sanitize values of a array


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...