Character boundary statement
1). Write three less than signs (<<<) after the equal sign after the variable.
2). Then write characters after <<< (English uppercase characters are recommended). As in the following example: ABC
3). Then change the line and write any characters you want
4). After writing, go to the top line. At the beginning of the line, write the characters following <<< and a semicolon. As in the following example: ABC;
<?php
$dingjie = <<<ABC
If
you have to be in front of this kid
Noodles & lt; br/& gt;
plus a paragraph
& lt; i & gt; How far</h1>
ABC;
?>