How can I write PHP syntax in a string

I tried to write some content in order to write in a php file and in my $content variable i use Heredoc and nowdoc but php tags seems not working and are still shown.

$content = <<< EOT
<?php
    include $_SERVER['DOCUMENT_ROOT'] . '/home/index2.php';
?> 
EOT;

Any ideas ?

Try using Output buffering instead of a heredoc:

ob_start();
include $_SERVER['DOCUMENT_ROOT'] . '/home/index2.php';
$content = ob_get_clean();

Reference:

• ob_start()
• ob_get_clean()