Usage of Heredoc in PHP

This article mainly introduces the use of Heredoc in PHP, has a certain reference value, now share to everyone, the need for friends can refer to

Heredoc technology, usually not detailed in regular PHP documentation and technical books, just mentions that this is a Perl-style string output technique.
But now some of the forum procedures, and some of the article system, are clever use of heredoc technology, to partially realize the interface and code of the quasi-separation, phpwind template is a typical example.

<?php$name = ' world Test '; Echo <<<EOT 
1. Start with a <<<end start tag, end With end tag, end tag must be written in the head, no indentation and space, and a semicolon at the end of the closing tag. The start tag is the same as the start tag, such as the usual uppercase EoT, EOD, EOF, but not limited to those, as long as the start tag and end tag are not present in the body.
2. Variables located between the opening and closing tags can be parsed normally, but the function is not. In Heredoc, a variable does not need a connector.
3.heredoc is often used when the output contains a lot of HTML syntax and documentation. For example:
 
<?php$v = 123456; $a = <<<eof "abc" $v "123" Eof;echo $a; The result is output together with double quotes: "abc" 123456 "123"?>
 
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