When using codesniffer to check your code, a lot of warnings might appear when the lines are too long:

----------------------------------------------------------------------
FOUND 0 ERRORS AND 4 WARNINGS AFFECTING 4 LINES
----------------------------------------------------------------------
  73 | WARNING | Line exceeds 120 characters; contains 162 characters
  75 | WARNING | Line exceeds 120 characters; contains 124 characters
 102 | WARNING | Line exceeds 120 characters; contains 168 characters
 108 | WARNING | Line exceeds 120 characters; contains 121 characters
----------------------------------------------------------------------

To ignore those warnings, we can add // phpcs:ignore as a comment to the end of a (too long) line. For example:

<?php
$message = 'This is my long message. It\'s not only long, it\'s extreeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeemly long'; // phpcs:ignore