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php

    1: <?php
    2: 
    3: DEFINE("SESSION_FILE_PREFIX" ,"session_test_");
    4: function open($save_path, $session_name) {
    5:     global $session_save_path, $name;
    6:     $session_save_path = $save_path;
    7:     $name = $session_name;
    8:     echo "Open [${session_save_path},${session_name}]\n";
    9:     return true;
   10: }
   11: 
   12: function close() {
   13:     global $session_save_path, $name;
   14:     echo "Close [${session_save_path},${name}]\n";
   15:     return true;
   16: }
   17: 
   18: function read($id) {
   19:     global $session_save_path, $name, $session_id;
   20:     $session_id = $id;
   21:     echo "Read [${session_save_path},${id}]\n";
   22:     $session_file = "$session_save_path/".SESSION_FILE_PREFIX.$id;
   23:     return (string) @file_get_contents($session_file);
   24: }
   25: 
   26: function write($id, $session_data) {
   27:     global $session_save_path, $name, $session_id;
   28:     $session_id = $id;
   29:     echo "Write [${session_save_path},${id},${session_data}]\n";
   30:     $session_file = "$session_save_path/".SESSION_FILE_PREFIX.$id;
   31:     if ($fp = fopen($session_file, "w")) {
   32:         $return = fwrite($fp, $session_data);
   33:         fclose($fp);
   34:         return $return;
   35:     }
   36:     return false;
   37: }
   38: 
   39: function destroy($id) {
   40:     global $session_save_path, $name;
   41:     echo "Destroy [${session_save_path},${id}]\n";
   42:     $session_file = "$session_save_path/".SESSION_FILE_PREFIX.$id;
   43:     return unlink($session_file);
   44: }
   45: 
   46: function gc($maxlifetime) {
   47:     global $session_save_path, $name;
   48:     $directory = opendir($session_save_path."/");
   49:     $length = strlen(SESSION_FILE_PREFIX);
   50:     while (($file = readdir($directory)) !== FALSE) {
   51:         $qualified = ($session_save_path."/".$file); 
   52:         if (is_file($qualified) === TRUE) {
   53:             if (substr($file, 0, $length) === SESSION_FILE_PREFIX) {
   54:                 unlink($qualified);
   55:             }
   56:         }
   57:     }
   58:     closedir($directory);
   59:     return true;
   60: }
   61: 
   62: ?>
   63: