Quick Question

[The Praetorian]

Looked through the website but couldn't find this, even though I know it's there somewhere.What's the href for a link that sends you back one page? (The same as hitting back on the browser?)

[Skemcin]

Technically, you can do it two ways.a.) using a server side include language (asp, php, coldfusion) you could dynamically generate the link using the referral url (which is search engine friendly)b.) use javascript <a href="java script: void(0);" onclick="history.back();" title="[back]">back</a>

[The Praetorian]

Hm. How would I do the one with php?I tried the javascript one, and I got an "ACCESS FORBIDDEN: You don't have permission to access this object" error.

[Skemcin]

$ref=@$HTTP_REFERER;echo "<font face='Verdana' size='3'><b>Referrer of this page = $ref </b>";

[The Praetorian]

Nothing shows up when I do that. Just to make sure I'm doing it right...

$ref=@$HTTP_REFERER;if( !ereg("^.+@\.com$",$_REQUEST['Email'])){echo "<h1>Please Enter a Valid Email Address<br />$ref</h1>";}

[aspnetguy]

change this line

echo "<h1>Please Enter a Valid Email Address<br />$ref</h1>";

to

echo "<h1>Please Enter a Valid Email Address<br />{$ref}</h1>";

or

echo "<h1>Please Enter a Valid Email Address<br />" . $ref . "</h1>";

[The Praetorian]

Still nothing. Tried both lines and neither outputted anything.(Does it matter that I'm running this on a localhost? [i do have a server set up.])

[aspnetguy]

try

$ref = "Referrer: " . $_SERVER['HTTP_REFERER'];

I'm not sure but @$HTTP_REFERER; may be for an older version of PHP. Also by writing an extra part of the string you'll see if it works. If all you get is "Referrer:" then you know it is a problem with the server variable or there is no referrer.

[Skemcin]

Thanks for stepping in aspnetguy - I'm no php guru, and I didn't want to convert him to ColdFusion until he is truly frustrated.:-D

[The Praetorian]

hm. Okay. It showed the url. Still not quite what I want it to do though. Can I use the variable in a link? (IE... <a href="$ref">Back</a> )? What I really want is just a link someone can click to send them back to the other page (so that all the info they entered into the form is still there.) But without having to press back on the browser.(On a side note, thanks for the help guys.)

[rswildy]

Try

("txt=Back;url=java script:history.back();");

[The Praetorian]

Where do I put that? Do I turn it into a variable? Post it as is?

[rswildy]

Found a basic way should work :S

<a href="java script: history.go(-1)">Back</a>

Try that, If it doesn't work i don't know what to reccomend.

[jesh]

hm. Okay. It showed the url. Still not quite what I want it to do though. Can I use the variable in a link? (IE... <a href="$ref">Back</a> )?

That sounds right. If $ref stores the URL to the previous page, then using something like this should work:

echo '<a href="$ref">Back</a>';

[The Praetorian]

Stupid wireless. Can delete this one.

[The Praetorian]

Okay. Friend of mine told me to do this, so I'll post it in case anyone else looks for it. (I used this in an echo, that's why the " are escaped.)

<a href=\"java script:back()\">Back</a>

Thanks for the help guys.