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;
$$foo means "I want a variable whose name is contained in the variable
$foo". So if $foo has the value 'bar', then you'll actually be saying "I
want a variable whose name is 'bar': $bar".
So:
$foo = 'bar';
$bar = 'this works!';
echo $$foo; // returns "this works!"
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