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session_var_names()
by: Dannie M Stanley
|
August 26, 2000
Version: 0.2
Type: Function
Category: Other
License: GNU General Public License
Description: This function takes the string data from session_encode() and returns the variable names, for that session, in an array.
//##################################################################
// Function: session_var_names()
// Version: 0.2
// Programmer: Dannie M Stanley <dan@spinweb.net>
// Company: SpinWeb Net Designs, Inc. <http://www.spinweb.net/>
// Description: This function takes the string data from session_encode()
// and returns the variable names for that session in an
// array.
// Takes: encoded string
// Returns: array containing variable names
// Date: 08/24/2000
// License: Public
// Notes: Please send updates/fixes. Thanks and have a good day!
//##################################################################
// ChangeLog: 0.2 Added support for null variables
//##################################################################
function session_var_names($enc_data)
{
// It seems when there is an array it may contain | or ; between { and }
// so here I effectively delete all data between { and } and set } = ;
// so when I parse later it knows where the variable data ended.
while(strpos($enc_data, "{"))
{
$decode_data .= substr($enc_data,0,strpos($enc_data, "{"));
$decode_data .= strstr($enc_data,"}");
$decode_data = str_replace("}", ";", $decode_data);
$enc_data = $decode_data;
}
// Move all variable names and their data into array elements
$format_data = explode(";", $enc_data);
// Snatch the variable name (first part of string before |)
for($i=0; $i<count($format_data); $i++)
{
// If the variable is null it is set to !varname so
// this grabs the first one and all subsequent null vars
if(substr($format_data[$i], 0, 1) == "!")
{
$bang_vars = $format_data[$i];
while(strstr($bang_vars, "!"))
{
$names[] = substr($bang_vars, 1, strpos($bang_vars, "|")-1);
$bang_vars = strstr($bang_vars,"|");
}
}
else
{
$var_name = substr($format_data[$i], 0, strpos($format_data[$i], "|"));
$names[] = $var_name;
}
}
// Delete last entry if empty
if($names[count($names)-1] == "")
array_pop($names);
return $names;
}
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