In PHP, what does "<<<" represent?
$sql = <<<MySQL_QUERY
That’s heredoc syntax. You start a heredoc string by putting
<<< plus a token of your choice, and terminate it by putting only the token (and nothing else!) on a new line. As a convenience, there is one exception: you are allowed to add a single semicolon after the end delimiter.
echo <<<HEREDOC This is a heredoc string. Newlines and everything else is preserved. HEREDOC;
Answered By – tdammers