{"id":10570,"date":"2020-02-17T08:09:07","date_gmt":"2020-02-17T08:09:07","guid":{"rendered":"https:\/\/www.devopsschool.com\/blog\/?p=10570"},"modified":"2021-11-12T10:35:44","modified_gmt":"2021-11-12T10:35:44","slug":"what-are-comments-constant-variable-string-interpolation-arithmetic-and-assignment-operators-in-php","status":"publish","type":"post","link":"https:\/\/www.devopsschool.com\/blog\/what-are-comments-constant-variable-string-interpolation-arithmetic-and-assignment-operators-in-php\/","title":{"rendered":"What are Comments, Constant Variable, String Interpolation, Arithmetic and Assignment Operators in PHP?"},"content":{"rendered":"\n

Comments in PHP<\/em><\/h1>\n\n\n\n

Comments are those human-readable texts that we should add to make our code more understandable for other programmes. It is ignored by PHP and doesn’t affect your code.<\/em><\/p>\n\n\n\n

Comment are of Two types.<\/strong><\/em>
i. One or Single-line Comment.
ii. Multi-line Comment.<\/p>\n\n\n\n

i. One or Single-line Comment:- <\/em><\/strong>Single line Comment is used to comment one line at a time or used in one line.<\/p>\n\n\n\n

There are two types of Single line Comment:-<\/em><\/p>\n\n\n\n

  1. Starts with \/\/
    Ex-<\/strong> \/\/this is home section.<\/li>
  2. Starts with #
    Ex-<\/strong> # this is footer section.<\/li><\/ol>\n\n\n\n

    ii. Multi-line Comment:-<\/em><\/strong> It is used to comment more than one line at a time or used in more than one line. It starts with \/* and ends with *\/. <\/em><\/p>\n\n\n\n

    Ex –<\/strong> \/* this is
    a multi-line
    Comment*\/<\/p>\n\n\n\n

    String Interpolation<\/em><\/h1>\n\n\n\n

    String Interpolation is a feature or a quick shortcut which allows popping the value of a variable into a double-quoted string.<\/p>\n\n\n\n

    Ex –<\/strong> {Without String Interpolation}<\/em><\/p>\n\n\n\n