resetting a variable

[Anonymous]

when passing a variable via

@header(Location: whater.com/program.php?mailin=xxxxx)

or within a form statement

<input type="text" name="mailin">

how do I clear the variable mailin to equal NULL or reset it to nothing?
while still within the program

Thanks for anyones help

 

[gesf]

Use the php's unset() function!

 

[Anonymous]

Thanks alot....

Just so I am clear on this...

lets say I used the command

$name = $_REQUEST['mailin'];

would I issue a

unset($name); or
unset($_REQUEST['mailin']);

LOL I suppose I can just try it .... thanks

 

[gesf]

You will make unset($name);!
But you still able to assign mailin to another variable! It still alive til the end of the pages's process!

 

[Anonymous]

Actually after rethinking my question

I guess what I really need is to reset a Cell

for instance I have

if such and such
echo " <TD>hi there<TD>";
else
echo "<TD>not here</TD>";

so my onclick is where is would reset it
bu

 

[gesf]

Not sure about what you really want to do, but you can use something like this instead:

if (whatever)[ 
$var =  "<td>hi there</td>"; 
}else{
$var =  "<td>not here</td>";
}
echo $var;
?>

This way you have the content in a variable witch you can work with!

BTW: You said onClink !?
Never forget this: php is a server-side scripting, instead of javascript or html witch are client-side ...