Dynamic Variables, how?

[Anon]

Hi,

This is a quit long story but I'll try to make i short :-)

Here goes,

I used to code ASP, and when i made i form with input fields with the same name, fx.:

<input name=id value=1>
<input name=id value=2>

when this got posted to the next page it would automaticly make the variable id=1,2 so i could split it or put i directly in my database with a insert into.........where id in ($id)......

but when i do the same i PHP it takes the last one in the form, so the post would only be 2 in this example......hmmmmm, I think.....

but okay, i have to move on so i would make my input's like this.....

<input name=id_1 value=1>
<input name=id_2 value=2>

that way i wanted to make a new variable with post....but it doesn't seem to work for me.....

i have this job where there can be unlimited questions..........and unlimited answers for each question.....so i coded som stuff that makes x times of input boxes for answers.......hope you still follow me.....

what i need to know is how to make dynamic variables......to make a new variable with this coding i have done.....i been reading something with double $ ($$) but i couldn't make that work either........please help me soon...

Lars

[Anon]

Give your html inputs array names:

<input name="data[]" ...

Then when it comes back to you, you can loop through the elements
of the array '$data' and do what you want with them.

[Anon]

I think Kirk's idea of using an array is the best solution (if it is suitable).

But if you still haven't done the coding, an alternate would be to use your old method:

<input name=id_1 value=1>
<input name=id_2 value=2>

you could print this HTML out using PHP like this:

// maxnumbers is the iterator's end
for($i = 0; $i < maxnumbers; $i++) {
print "<input name=id_$i value=yourvalue>";
}

to access it use this code:
for($i = 0; $i < maxnumbers; $i++) {
eval("print \$id_$i;");
}
NOTE: the eval function evaluates a print statement. Change the print to whatever you want to do with your id_n variables.

Once again, I think this is the longer of the two solutions and if the array solution is easier for you, go with it.

hope this helps,
-sridhar

[Anon]

Sridhar said:
to access it use this code:
for($i = 0; $i < maxnumbers; $i++) {
eval("print \$id_$i;");
}

An easier way to access the variable would be to do:
$var = "id_$i";
the value is then in: $$var

-Mike