₦airaland Forum

pls help me wt ds simple questions...I.actually dnt understand dem...
what does. echo<<<_END, and _END means....
secondly, wats d essence or importance of $_SESSION
thanks in anticipation my boss....

The essence SESSION: When you create a log in page, some of the detail(eg user name) is set as session. This enables the other pages to prevent those that are not loged in from assessing a page. Ie if not for session, you will have to log in on each page. as for "echo<<<_END'....it just comments out every thing after, I have no Idea of its essence

hexy40:
The essence SESSION: When you create a log in page, some of the detail(eg user name) is set as session. This enables the other pages to prevent those that are not loged in from assessing a page. Ie if not for session, you will have to log in on each page. as for "echo<<<_END'....it just comments out every thing after, I have no Idea of its essence

thanks bro but if dere s sth like
$error = invalid username
$_SESSION['error'] = $error ...what is d person tryin to do

cr80vity:
pls help me wt ds simple questions...I.actually dnt understand dem...

what does. echo<<<_END, and _END means....

secondly, wats d essence or importance of $_SESSION

thanks in anticipation my boss....

Since question on session is answered, echo _____end , is used when you want to write or include html in a php file, example

echo"html code here";


you end echo with "; .

cr80vity:
thanks bro but if dere s sth like
$error = invalid username
$_SESSION['error'] = $error ...what is d person tryin to do

Thinking of how to put the answer to your question in English.......
The person is trying to set the session "error",giving it a value "invalid username". When you insert an invalid username into the log in area, the error session will be set to " invalid username" instead of may be setting the username as session . "invalid username" will now be echoed back to the user.... it depends on how the programmer wants to handle the situation

The <<< syntax is a carry over from other unix languages.

it allows one to have a string that spans multiple lines, in php it's called heredocs.

_END is just an arbitary marker and could be anything.

I usually use _EOF_ for strings or _SQL_ if it's a long sql statement.

You can read more about it here.

http://php.net/manual/en/language.types.string.php#language.types.string.syntax.heredoc