PHP security filtering, validation, escaping

Source: Internet
Author: User

Do not trust external sources

  • $_get
  • $_post
  • $_request
  • $_cookie
  • $argv
  • Php://stdin
  • Php://input
  • File_get_contents ()
  • Remote Database
  • Remote API
  • Data from the client

Htmlentities

<?php$input = ' <p><script>alert ("You won the Nigerian lottery!"); </script></p> '; Echo htmlentities ($input, ent_quotes, ' UTF-8 ');//<p><script>alert ("You won The Nigerian lottery! "); </script></p>

  

Htmlpurifier

PHP security filtering, validation, escaping

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