[Resolved] session text file, extract array within array

[bfuzze_98]

I found and modified the following code which allows me to extract session variables from a text file into an array ($varsess). Some of the variables within $varsess are arrays. For example,$varsess=[$name1, $name2, $r_area, $farea, ...], $r_area = [1,7,9,...] is within . How can I access/print out the values for r_area?

$sfile = "sessions/indreq_" . $uname . ".txt"; 
if (file_exists($sfile))   { 
   $sessionfile =  fopen($sfile, "r"); 
   session_decode(fputs($sessionfile, 4096)); 
   fclose($sessionfile); 
   $varsess = Array('SESSION'); 
   for ($i = 0; $i < sizeof($varsess); $i++)   { 
   if (is_array(${"_{$varsess[$i]}"}))   { 
   foreach (${"_{$varsess[$i]}"} as $var=>$val)   { 
      $$var = $val; 
      // print "Var :".$var." -- Value :".$val."\n<br>"; 
} 
} 
} 
} 

I am a newbie so speak slowly/small words. Thanks.

[bretticus]

You could use is_array() function to test if the current variable is an array or not. if you have arrays nested under arrays, you might try a while loop combo with is_array.

However, if you are just doing this for debugging purposes, print_r will recursively print out your array quite nicely.

[bfuzze_98]

Thanks for the response.
I tried using is_array and got no response. Perhaps, I am using it wrong, see code ("//NEW").

	
$varsess = Array('SESSION');
for ($i = 0; $i < sizeof($varsess); $i++)	{
  if (is_array(${"_{$varsess[$i]}"}))	{
    foreach (${"_{$varsess[$i]}"} as $var=>$val)	{
      $$var = $val;
      print "Var :".$var." -- Value :".$val."\n<br>";
      if ($var == "res_resarea") {
        if (is_array($var))	{//NEW
          $h=0;
            while ($h <= count($var))	{
              echo '<br>' . $var[$h];
            }
          }
        }			
      }
    }
unset(${"_{$varsess[$i]}"});
}

Also, when I use 'print' to view the variables/values I get the following resopnse:
Var :r_area -- Value :Array
So it recognizes that the variable is an array, but the syntax I'm using will not provide the individual values of the array which will enable me to manipulate the page. Any suggestions?

[bretticus]

try...

 foreach ($varsess as $var => $val) {
    	if (is_array($val)) {
    		 print "Var :".$var." -- Value :". implode(",", $val) ."\n<br>";
    	} else {
    		 print "Var :".$var." -- Value :".$val."\n<br>";
    	}
    }

// or just...

print_r($varsess);

[bfuzze_98]

Implode

That's exactly what I was looking for. Thanks.

Actually,

It was $val I was Confsed about. This is what I was looking for:

foreach (${"_{$varsess[$i]}"} as $var=>$val)	{
  $$var = $val;
  if ($var == "res_resarea")                                     {
    if (is_array($val))	                                                {
      for ($h = 0; $h <= count($val); $h++)	{
        echo '<br>' . $val[$h];
}
}
}
}

Thanks for pointing me in the right direction. You've been a great help.

[bretticus]

This question may n00bi-ize me but why the "_{$varsess[$i]}" notation?

[bfuzze_98]

As I stated from the get-go, I found and modified.
But when I tried this:

$varsess = Array('SESSION');
for ($i = 0; $i < sizeof($varsess); $i++)	                                                                {
if (is_array([COLOR=tomato]$varsess[/COLOR]))	{
foreach ([COLOR=tomato]$varsess[/COLOR] as $var=>$val)	 {
$$var = $val;
  if ($var == "res_resarea")                                     {
    if (is_array($val))	                                                {
      for ($h = 0; $h <= count($val); $h++)	{
        echo '<br>' . $val[$h];
}
}
}		
}
}
}

I get this response:
Array ( [0] => SESSION )

Care to educate?
If there is an easier/better way, please share.

[bretticus]

Well, now for the questions if never understood...are you trying to implement homemade sessions? Are you trying to snoop valid session data? Does this have anything to do whatsoever with PHP's built in session handling? Could your aim be as simple as just printing the current users session information and I've missed the mark? In summary, what exactly are you trying to accomplish that, possibly, I will know a better way?

[bfuzze_98]

The end result is to retain session information when a user presses a button. I am developing a series of forms to obtain information about our site users, but the format of each form depends on selections from the preceding form. I used a JS Script to preserve text/checkbox values, but it did not work for multiple select boxes. At the moment, the user can go back to find the same/correct form layout (even without a session file), but their earlier selections have been lost. I want their previous selections to be visible when they hit the back button.

So:
They submit their requests.
I save their session.
They hit the back button...
I retrieve their earlier requests and they can see what they selected.

In addition, there will eventually be a profile edit page which with the help of this session feature will enable the user to jump to any of the form pages and have their previous selections visible.