The use of Heredoc and Nowdoc syntax in php7.3

illustrate

1. Heredoc and Nowdoc syntax can be of great help when using multi-line long strings. It requires that the end identifier should be the first string that appears on a new line.

2. Indentation is supported before closing the identifier, and line breaks are no longer forced after closing the identifier.
Example

 //Except this:

$query = <<<SQL

SELECT *

FROM `table`

WHERE `column` = true;

SQL;

// This also works:

$query = <<<SQL

SELECT *

FROM `table`

WHERE `column` = true;

SQL;

The above is the use of Heredoc and Nowdoc syntax in php7.3. I hope it will be helpful to everyone.