PHP Validation Session Invalid problem solving method _php Tutorial

PHP Validation session Invalid problem resolution

Environment, I'm using the apache+php environment.

such as my program code is as follows

The code is as follows
Processing files After submission this post.php file if ($_session[' Ssioner ']!= $ssever) { Echo (""); exit; }

It was found that the verification code must be composed of 4 digits, and I will print out the session

echo $_session[' Ssioner '];exit;

Always empty, when I think of the PHP environment configuration of a session file directory, now we find the php.ini configuration file found

Upload_tmp_dir

Find this directory is

Upload_tmp_dir= "D:\WWW.111CN.NET\TP"

I check my d disk found only www.111cn.net file and no TP directory, so the problem is found, when I create a TP directory, restart Apache found in the TP directory has sess_i40gl0p4hfep5r69j67o1k26d01 file, This re-login has been successfully found.

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