I have the following code:
if(isset($_SESSION["spgrund"])) {
$spgrund = $_SESSION["spgrund"];
}else{
$spgrund = '';
}
This code is repeated about 20 times for each session variable. How can I make a loop out of it?
foreach($_SESSION as $key => $value){
$$key = $value;
}
I think that should work. But I get undefined variable error messages. Can't I use such a loop?
What you actually try to achieve is already available in PHP, the extractDocs function:
extract($_SESSION);
From it's documentation:
Import variables from an array into the current symbol table.
Checks each key to see whether it has a valid variable name. It also checks for collisions with existing variables in the symbol table.
You would still need look for undefined variables however. Probably you should define them first?
$spgrund=''; and then extract it takes the first defined empty value...
spgrund is not a key of $_SESSION. Use var_dump($_SESSION) to look what's inside that variable. This probably helps you.print_r ($_SESSION);). Also used var_dump and it prints &string(4) "test". But echo is empty ...$spgrund=''; than it works, but I get undefined variable errors. Now more about my code: I have a form which sends to form_do.php. Therein all POST Parameters are set into SESSION variables and I make a redirect to form.php, which was calling form_do.php. I think I have to leave the old way because I spent to much time on improving this ...foreach($_SESSION as $key => $value)
{
$$key = $value;
}
you missed the $ for value
if which seems to need it. Is there a way to optimize the code (20 times the same code) within a foreach?
echoand someif ($spgrund == "1").