dynamic variables?

[interpim]

So, here is the problem I need to find a solution for...

 

I have a form, which entry into is repetitive, although not all parts of the form will be required to be filled in.

 

basically i have the following values.

 

alt1, class1

alt2, class2

alt3, class3

alt4, class4 etc...

 

so I want to cycle through these, and assign these to variables when the page is processed, if they contain data.

How can I build a variable name using for each of these without physically typing a block of code for each numbered name since the type of data will be the same.

 

So far I have this

 

$j = 1;
while($j < 10){
$var = "alt" . $j;

#This is where I cannot figure out how to get the value in $var to actually be the variable...


$j++;
}

 

Am I on the right track?  and if so, what am I missing here?

[PFMaBiSmAd]

Use an array. Variable variables are 3 times slower than an array and the code to use variable variables is more complicated than using an array.

 

If you post your actual form, someone can help with how to use it with arrays.

[interpim]

<form method='post' action='build_userpage.php'>
SERVER:  <input type='text' name='server'>
Main Character: <input type='text' name='main'>Class: <input type='text' name='main_class'>
Alt: <input type='text' name='alt1'>Class: <input type='text' name='alt1_class'>
Alt: <input type='text' name='alt2'>Class: <input type='text' name='alt2_class'>
Alt: <input type='text' name='alt3'>Class: <input type='text' name='alt3_class'>
Alt: <input type='text' name='alt4'>Class: <input type='text' name='alt4_class'>
etc.....
<input type='submit' value='create'></form>

[kenrbnsn]

Change to

<form method='post' action='build_userpage.php'>
SERVER:  <input type='text' name='server'>
Main Character: <input type='text' name='main'>Class: <input type='text' name='main_class'>
Alt: <input type='text' name='alt[1]'>Class: <input type='text' name='alt1_class'>
Alt: <input type='text' name='alt[2]'>Class: <input type='text' name='alt2_class'>
Alt: <input type='text' name='alt[3]'>Class: <input type='text' name='alt3_class'>
Alt: <input type='text' name='alt[4]'>Class: <input type='text' name='alt4_class'>
etc.....
<input type='submit' value='create'></form>

Then you can use

<?php
for ($i=1;$i<5;$i++)
   echo $_POST['alt'][$i] . '... ';
?>

 

Ken

[interpim]

thank you Ken, let me run through this for a bit and see how it works out.

[PFMaBiSmAd]

Ever easier (does not care how many there are) -

<?php
foreach($_POST['alt'] as $key => $value)
   echo $key . $value;
?>