Familiarization with the function clean_pre() in WordPress
Hello friends! Today we want to talk about a useful function in WordPress called clean_pre(). This function helps us control various inputs that we receive. In simpler terms, this function is used for cleaning and eliminating the content of inputs to prevent issues like XSS attacks or SQL Injection.
Before we delve into the details of the function clean_pre(), let's take a look at the necessity of using such functions in web development. When users can upload information, it is possible for data to undergo changes or include nasty characters. This is exactly where clean_pre() assists us in retrieving clean and reliable inputs.
A notable point about clean_pre() is that this function can automatically process various inputs and convert them into formats that have better security and usability. In fact, this issue is simpler for developers because there is less need for monitoring regarding the nature and type of incoming information.
Overall, using clean_pre() is one of the best ways to protect your website against security threats and enhance the quality of incoming data. Now let’s take a look at real-world examples of this function.
Code Example
$input = "";
$clean_input = clean_pre( $input );
// Output: $clean_input = "alert('test');";
Line-by-Line Explanation
$input = "";
In this line, an input with a JavaScript script is created.
$clean_input = clean_pre( $input );
This line calls the function clean_pre() to clean the input. This means that anything unwanted, such as HTML tags, will be removed.
Ultimately, the result is stored in $clean_input, and we can use it in other parts of our code.