什么<<< OUT意味着PHP？ [重复]

Question

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In PHP, what does “<<<” represent?
Reference - What does this symbol mean in PHP?

I ran into this in a PHP script.

(Be aware, I'm new at this so I might look dumb)

$Var['Text'] = <<<OUT
String Here
OUT;

Answer 1

That's called the Heredoc syntax to mark strings. Check it out!