List var to string

[Mikemcs]

I need to get all variable from a page and put them in a string. what i need is the result to look like var1,value1,var2,value2,var3,value3

I have this
<?
unset($POST['submit']);

foreach($POST as $value)
{
$string = $string .','. $value;
}

  echo $string;

?>

But I need to get the var part in also.

[paulnaj]

What about ...

unset($_POST['submit']); 
foreach($_POST as $key => $value) { 
    $string = $string .','. $key; 
    $string = $string .','. $value; 
} 

echo $string; 

[Mikemcs]

Thats it thanks