[thelist] PHP + variables
Simon Willison
cs1spw at bath.ac.uk
Fri Mar 15 15:59:01 CST 2002
Mark Joslyn wrote:
>Right now, I have 80+ if statements like this:
>
>$myAS400_Twinax = $AS400_Twinax;
>if ($myAS400_Twinax == "yes"){
> $myAS400_Twinax = "\n Twinax: YES";
>}
>
>- one for each variable. There has to be a better way. Any suggestions?
>
There are two options for doing this more effectively off the top of my
head: The first is variable variables:
<input type="text" name="blah0">
<input type="text" name="blah1">
<input type="text" name="blah2">
<input type="text" name="blah3">
Then in your code:
<?php
for ($i = 0; $i < 4; $i++)
{
$varvar = 'blah'.$i;
$value = $$varvar; // Two dollar signs because this is a variable
variable :)
// Now do stuff with $value;
}
?>
The second (better) option is to use array form fields:
<input type="text" name="blah[0]">
<input type="text" name="blah[1]">
<input type="text" name="blah[3]">
<input type="text" name="blah[4]">
When you post this form to a page, PHP will set up an array called $blah
with the items from the form.
The array method also works with named indexes:
<input type="text" name="blah[hi]">
<input type="text" name="blah[there]">
<input type="text" name="blah[this]">
<input type="text" name="blah[works]">
HTH,
Simon
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