Answer:
?>
Explanation:
The statement terminator for PHP language is ?>
PHP i.e. Hypertext Preprocessor.
It is widely used open source general purpose scripting language that is especially suited for web development and can be embedded into HTML.
PHP opening and closing tags are <? and ?> respectively.
hope you got the point any question can be asked in comments will be answered duly.
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online stuff dont ever get permanently erased even if the person or website deletes the file someone could download it before it is taken down. The internet has so many different websites that it flags that your computer visited them doesn't matter how long. also cookies evaluate what you viewed on their website and act accordingly. Anyone with good hacking skills can break into any online account or website and use the digital footprint to track you to your scource.
You could try and censor the internet but at the end of the day, it would be pretty much impossible. People would try and figure out a way to get rid of your censor and would probably be able to accomplish it.