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Introduction to PHP security
Checking Data
Displaying Formatted User Input
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Introduction to PHP security
Displaying Formatted User Input
Checking Data
PHP > Documentation > Security
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Introduces users to some of the common security threats they may face when writing PHP/MySQL code.





An overview of three common steps your PHP program may take and what to wtch out for. These include verifying the input is correct, manipulating the input, and how to access your data.



This article explains how to take precautions and format user input for display on your web site, describing the dangers of unfiltered output and how to make it safe.