错误信息这么多行

Warning: POST Content-Length of 14512651 bytes exceeds the limit of 8388608 bytes in Unknown on line 0
Array ( )
Notice:  Undefined index: myFile in D:\phpStudy\WWW\upload\upload.php on line 8

Notice:  Undefined index: myFile in D:\phpStudy\WWW\upload\upload.php on line 9

Notice:  Undefined index: myFile in D:\phpStudy\WWW\upload\upload.php on line 10

Notice:  Undefined index: myFile in D:\phpStudy\WWW\upload\upload.php on line 11

Notice:  Undefined index: myFile in D:\phpStudy\WWW\upload\upload.php on line 12

Warning:  copy(): Filename cannot be empty in D:\phpStudy\WWW\upload\upload.php on line 14

====老师的错误信息怎么没有中间的，只有两行呢？