Should be pretty simple.

Does anyone know how to combine two variables into one? I have two variables containing information.

$a and $i
$a = a1 is a variable sent from a previous page, and I want to output the variable within a loop because there are more variables (a1, a2, a3, a4 .....)

so what I'm trying to do is this:

$i = 1
while ( $i <= 4 ) {

here I want to echo a1 by $a&$i Does anyone know how to put these two together? so I can output in the loop?

$i++;
}

thanks, I hope you guys can understand what I'm asking for....

$hello = 'Hello ';
$world = 'World';

$hw = "$hello"."$world";

echo $hw;

This combines the two strings to form one and would print 'Hello World'

If I understand well you have:
$a1 = "Var 1";
$a2 = "Var 2";
$a3 = "Var 3";
and you want to access them in a loop.
Try
$i = 1;
while ($i < 4) {
eval("$a = "$a$i";");
print("a$i = $an");
$i++;
}

Be carefull with the escaped (with the slash) symbols.
I hope this works.

Alternatively you could do it like this:
<BLOCKQUOTE><font size="1" face="Verdana,Arial,Helvetica">code:</font><HR><pre>
$a1 = "Var 1";
$a2 = "Var 2";
$a3 = "Var 3";

$i = 1;
while ($i < 4) {
$temp="a".$i;
print "a$i = $$tempn";
$i++;
}
[/quote]
Just a matter of personal prefrence, I guess.

Maybe it's my fault but the above code (by moderator) does not work for me.
I am using PHP 3.0.12, and the ouput of the script was:
a1 = $a1
a2 = $a2
...
where it should be:
a1 = Var1
a2 = Var2
...
The aditional '$' did not work for me and left me a doubt:
Is that an option in PHP.INI or a compile time option?
thanks.