我是否允许将单引号，双引号heredoc语法或nowdoc语法字符串直接放入使用字符串的函数参数中？

Question

Am I allowed to put single quoted, double quoted heredoc syntax or nowdoc syntax strings directly into functions whose parameters require a string like for example strlen('string text') or strlen("some more string text") instead of including a variable for example strlen($str);?

If not why?

Answer 1

Yes. You can. You do not need to store it in a variable