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Secure Form Security



7:37 am on Mar 2, 2012 (gmt 0)

5+ Year Member


Guys, i have a form page and output page below and im seeking what is the best method security to secure my form from all kind of threats out there.

<form action="welcome.php" method="post">
Name: <input type="text" name="fname" />
Age: <input type="text" name="age" />
<input type="submit" />

Welcome <?php echo $_POST["fname"]; ?>!<br />
You are <?php echo $_POST["age"]; ?> years old.



11:24 am on Mar 2, 2012 (gmt 0)

WebmasterWorld Senior Member 5+ Year Member

You validate the input posted before you echo it. For instance age is expected to be an integer between 12-90. fname should be a string so you could verify it contains alphabetic chars between certain length limits. It then depends what your PHP code does with the values posted.

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