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Posted by Chris Hope on 05/09/07 00:44
Gilles Ganault wrote:
> Hello
>
> I remember a shortcut in Unix scripting that looks somewhat
> like this, but I can't remember what it's called, or what it really
> looks like:
>
> ---- CODE -----------
> print <<
> all
> this
> is
> sent
> as
> is
> <<
> ---- CODE -----------
>
> Does someone know what I'm talking about? I think I saw the same thing
> in a PHP script once.
>
> The reason I ask, is that I'd like to find a lighter alternative to
> this:
>
> ---- CODE -----------
> print "<html>\r\n";
> print "<head>\r\n";
> print "\t<meta http-equiv=\"content-type\" content=\"text/html;
> charset=iso-8859-1\">\r\n";
> print "\t<link rel=\"stylesheet\" href=\"/display.css\">";
> print "\t<meta http-equiv=\"Pragma\" content=\"no-cache\">";
> print "\t<META HTTP-EQUIV=\"Refresh\" CONTENT=\"60\">";
> print "\t<title>My title</title>\r\n";
> print "</head>\r\n";
> print "<body>\r\n";
> ---- CODE -----------
>
> Thanks!
It's called heredoc syntax and in PHP works like this:
print <<<END_OF_TEXT
all
this
is
sent
as
is
END_OF_TEXT;
The closing identifier *must* be at the start of the line, ie this
wouldn't work:
print <<<END_OF_TEXT
all
this
is
sent
as
is
END_OF_TEXT;
The identifier itself (END_OF_TEXT in my example) can be anything you
want, following the naming rules as any other label in PHP: it must
contain only alphanumeric characters and underscores, and must start
with a non-digit character or underscore.
There's more information here:
http://php.net/heredoc#language.types.string.syntax.heredoc
--
Chris Hope | www.electrictoolbox.com | www.linuxcdmall.com
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