how to retrieve POST data?

[alan123]

I have two php pages:
1)
<form method=post action="page2.php">
<input type=hidden name=a1 value=1 onclick="cal()">
<input type=hidden name=a2 value=2 onclick="cal()">
....
<input type=hidden name=a100 value=100 onclick="cal()">

2)on php2.php:
I can retrieve those data by using
$a1=$_POST['a1'];
...
$a100=$_POST['a100'];

Now I want to use FOR statement to get the data:
for ($i=1;$i<=100;$i++)
$a[$i]=$_POST['a'+$i]; ???this is not correct, I don't know how to get those data.

I know I can use array in form in 1st page, such as <input type=hidden name=a[1] value=1 onclick="cal()">
but it doesn't work in javascript, so I have to use variable a1, a2...a100, but have no idea how to get it on page2.php

Anybody can help me? thanks in advance.

 

[peacecodotnet]

You had almost everything right in your for statement, except one thing. As far as I know, you use a period to seperate things instead of a plus sign, like this:

for ($i=1;$i<=100;$i++)
$a[$i]=$_POST['a'.$i];

That should work. If not...well then I will just give up PHP forever.

Hope this helps! Post me back if it does.

Peace out,
Peace Co.

 

[DRJ478]

You need not use a for statement. I recommend to use foreach() instead - no counter necessary:

foreach ($_POST as $key=>$value){
   ... etc ...
}

However, that doesn't make much sense as you could acces the posted data in the superglobal array to begin with.

As for the JavaScript here's a tip: you can assign a different id which has no [] to the element.

HTML tip: double quote your values for the attributes. It's worthwhile and standards compliant.