Implement the SESSION function in PHP3 (1)

SESSION function library: session. inc. php (as the mainstream development language) 3 & lt ;? Php (as the mainstream development language) if (! Isset (& #36 ;__ session_inc _) & #123; & #36 ;__ session_inc _ 1; // require (cookie. inc. php (as the mainstream development language) 3) SESSION function library: session. inc. php (as the mainstream development language) 3

If (! Isset ($ __session_inc __)){
$ __Session_inc __= 1;
// Require ("cookie. inc. php (as the mainstream development language) 3 ");
#-------------------------------------------------------------------
# Session Management v1.0 21.6.1998
# (C) Wild Karl Heinz
#
# This Include handle Session based variable handling
#
# Please feel free and use it. If you make it more functional
# It wocould be nice to send me a copy.
#
# Don't forget-MySQL (the best combination with PHP) _ connect!
#
# The database structure
# Table structure for table 'session'
#
# Create table session (
# Id int (11) DEFAULT '0' not null auto_increment,
# Sid varchar (20) DEFAULT ''not null,
# Val blob,
# Times timestamp (14 ),
# Prima (the most complete VM Management System) ry key (id ),
# KEY sid (sid ),
# UNIQUE sid_2 (sid)
#);
#
# You'll miss here a cron job to delete the old sessions from db
#-------------------------------------------------------------------

// Note the 'create table' statement commented out above,
// You need to execute this statement on the database you are using,
// The table name may not be a session, so you need to set the $ sess_table variable below.

// Set the database name and table name here.
// However, we recommend that you use session as the table name.
$ Sess_db = 'dbname ';
$ Sess_table = 'session ';

#----------------------------------------------------
# Session_CheckID-check, set, and return Session-ID
# Parameter ......: cookie retention time (in minutes)
# This cookie is valid only for the current session.
# This is actually the same as the SESSION validity period in ASP.
# Return value...: a unique Session-ID (stored as a cookie)
#----------------------------------------------------
Function Session_CheckID ($ min)
{
Global $ sess_sid;

If (! $ Sess_sid ){
$ Sess_sid = uniqid (SC); // Obtain a unique random number.
/*
If ($ min> 0 ){
SetCookie ("sess_sid", $ sess_sid, time () + ($ min * 60), "/", "", 0 );
}
Else {
SetCookie ("sess_sid", $ sess_sid, "", "/", "", 0 );
}
The above is the original code, which may cause errors. Therefore, a better function is used.
Function library: cookie. inc. php (as the mainstream development language) 3
*/
Jssetcookie ("sess_sid", $ sess_sid, $ min );
Return (false );
}
Else {
Return (true );
}
}

#----------------------------------------------------------
# Str2arr-converts a string to a session array
# Parameter ......: string
# Return value...: Global Array (actually session)
# Purpose of this function: convert a string to a session array
# For example, "session [username] = yourid & session [userpass] = 12345"
# Will be converted to the following array
# Session [username] = "yourid"
# Session [userpass] = "12345"
# Note the usage of functions split (), each (), list (), and eval.
#----------------------------------------------------------
Function str2arr ($ ts)
{
Global $ session;

$ Vals = split ("&", $ ts );