php get post passes data security issues_PHP tutorial

php get post Transfer data in post method post get php post get post difference php parameter transfer http get post difference between post and get difference between get and post post and get

/**
* @name date safe class 0.1
* @author kevin xu
* @copyright kenvin E-mail:gincn@cn.cashboxparty.com MSN:gincn@live.cn
*/
interface dateSafe{
function gincn();
}
class safe extends doSafe implements dateSafe
{
public $safe;
function __construct($safe)
{
parent::__construct($safe); //Calling the parent class constructor, the error found by netizen javachen
$this->safe = $safe;
}
function gincn()
{
$this->safe = parent::xss($this->safe);
$this->safe = parent::sql($this->safe);
return $this->safe;
}
}
class doSafe
{
protected $str;
function __construct($str)
{
$this->str = $str;
}
function xss()
{
$this->str = trim($this->str); //Clean up space characters
$this->str = nl2br($this->str); //Convert newline character to

$this->str = strip_tags($this->str); //Filter HTML tags in text
$this->str = htmlspecialchars($this->str); //Convert the content in the text to HTML entities
$this->str = addslashes($this->str); //Add character escape
return $this->str;
}
function sql()
{
$this->str = mysql_escape_string($this->str);
return $this->str;
}
}

?>

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