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Warning: mysqli_query() expects parameter 1 to be mysqli, string given in D:\web\pw\tongji\technology.php on line 24

Warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result, null given in D:\web\pw\tongji\technology.php on line 25

Warning: Unknown: open(D:\xampp\tmp\sess_7tnvlnudl9afhce3e9vh01gv11, O_RDWR) failed: Invalid argument (22) in Unknown on line 0

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (D:\xampp\tmp) in Unknown on line 0