php $_POST[' ']

[shamuraq]

Hi guys,

 

I have a form using radio buttons.

For the radio button, lets just say i have the id name as 'rim' + number eg; rim0, rim1, rim2....

 

When i post the data to another file to execute the data collected, naturally i would use the:

$rim0=$_POST['rim0'];
$rim1=$_POST['rim1'];
....
$rim10=$_POST['rim10'];

i tried to shorten this process using this method:

//$q is part of the post variable.
for($x = 0; $x < count($q); $x++){

$rim[]=$_POST['"rim"."$x"'];
}

But i get this error

Notice: Undefined index: "rim"."$x" in D:\Apache Software Foundation\Apache2.2\htdocs\.....\#####.php on line 20
Notice: Undefined index: "rim"."$x" in D:\Apache Software Foundation\Apache2.2\htdocs\.....\#####.php on line 20
Notice: Undefined index: "rim"."$x" in D:\Apache Software Foundation\Apache2.2\htdocs\.....\#####.php on line 20
Notice: Undefined index: "rim"."$x" in D:\Apache Software Foundation\Apache2.2\htdocs\.....\#####.php on line 20
Notice: Undefined index: "rim"."$x" in D:\Apache Software Foundation\Apache2.2\htdocs\.....\#####.php on line 20
Notice: Undefined index: "rim"."$x" in D:\Apache Software Foundation\Apache2.2\htdocs\.....\#####.php on line 20
Notice: Undefined index: "rim"."$x" in D:\Apache Software Foundation\Apache2.2\htdocs\.....\#####.php on line 20
Notice: Undefined index: "rim"."$x" in D:\Apache Software Foundation\Apache2.2\htdocs\.....\#####.php on line 20
Notice: Undefined index: "rim"."$x" in D:\Apache Software Foundation\Apache2.2\htdocs\.....\#####.php on line 20
Notice: Undefined index: "rim"."$x" in D:\Apache Software Foundation\Apache2.2\htdocs\.....\#####.php on line 20

Is there something wrong with my POST syntax?

[Maq]

The parser thinks that the double quotes are part of the key string, try:

$rim[]=$_POST['rim'.$x];

[mattal999]

Don't undefined index notices mean that you didn't check if the variable has a value before using it?

 

if(isset($_POST['rim'.$x])) {
    $rim[] = $_POST['rim'.$x];
}

[PFMaBiSmAd]

If you use a HTML array name for the form elements, you can eliminate almost all of your code and simply iterate over the values using one simple foreach() loop - http://us3.php.net/manual/en/faq.html.php#faq.html.arrays

[shamuraq]

The parser thinks that the double quotes are part of the key string, try:

$rim[]=$_POST['rim'.$x];

 

TT's it! Thanx Mag

[Maq]

Also, since you are using a single quote as your master string the '$x' and '.' don't get interpolated, even though it looks like you're concatenating it.

[Maq]

TT's it! Thanx Mag

Maq*, and you're welcome.