<?php

$heredoc = <<<EOD
some text
EOD;

$nowdoc = <<<'EOD'
some text
EOD;

$heredoc = <<<END
some text
END;

$nowdoc = <<<'END'
some text
END;

$heredoc = <<<"END"
some text
END;

$nowdoc = <<<'END'
some text
END;