On 22-09-2012 12:34, Ashickur Rahman Noor wrote:
Hi all

I need some help to understand a code. The code is like this

$result = mysql_query($sSQL) or die("err: " . mysql_error().$sSQL);
     if($row = mysql_fetch_array($result))
       foreach($row as $key =>$value){ $$key=$value;}

I don't get the code from the foreach loop.
It simply assigns all values from the array to variables, which have the name of the keys.

So basically what happens is:
$array = array('a'=>1, 'b'=>2, 'c'=>3);
foreach($array as $key=>$val) {
   $$key = $val;

will result in the creation of:
$a = 1;
$b = 2;
$c = 3;

$$foo means "I want a variable whose name is contained in the variable $foo". So if $foo has the value 'bar', then you'll actually be saying "I want a variable whose name is 'bar': $bar".

$foo = 'bar';
$bar = 'this works!';

echo $$foo; // returns "this works!"

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