What is the purpose of using "<?$_SERVER['PHP_SELF']?>" in the code?

Using "<?$_SERVER['PHP_SELF']?>" in the code helps prevent cross-site scripting (XSS) attacks by ensuring that the form submits data to the same page it is located on, rather than allowing an attacker to specify a different action. This helps to ensure that the form data is processed securely and reduces the risk of malicious code injection. 

&lt;form action=&quot;&lt;?=$_SERVER[&#039;PHP_SELF&#039;]?&gt;&quot; method=&quot;post&quot;&gt;
  &lt;!-- Form fields go here --&gt;
  &lt;input type=&quot;submit&quot; value=&quot;Submit&quot;&gt;
&lt;/form&gt;

Keywords

PHP_SELF $_SERVER security form submission vulnerability

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