Help me analyze the exceptions

Help me analyze the errors. sortup is a form submission parameter, and topmoney is not in the database. 59 error 54 when running // processing the saved content 55 & nbsp; 56 $ sortrank = AddDay ($ pubdate, $ sortup ); 57 $ topMoney = $ help me analyze errors
Sortup is a form submission parameter, and topmoney does not exist in the database. when running, error 59 is displayed.

54 // process the saved content
55
56 $ sortrank = AddDay ($ pubdate, $ sortup );
57 $ topMoney = $ sortup * 10
58 // process the software that requires the download permission
59 if ($ topMoney> 0)
60 {
61 require_once (DEDEINC. '/memberlogin. class. php ');
62 $ pai_ml = new MemberLogin ();
63 // if the following conditions are normal, points are automatically deducted
64
65
66 // not enough gold coins
67 if ($ topMoney> $ pai_ml-> M_Money | $ pai_ml-> M_Money = '')
68 {
69 $ msgtitle = "You are not authorized to download the software: {$ arctitle }! ";
70 $ moremsg = "this software requires". $ topMoney. "gold coins can be downloaded. Currently, you have 71 gold coins:". $ money _ml-> M_Money! ";
72 include_once (DEDETEMPLATE. '/plus/view_msg.htm ');
73 exit (0 );
74}
75 // record the order
76 if (! $ Dsql-> ExecuteNoneQuery ($ inquery ))
77 {
78 ShowMsg ('Order record failed, please return ','-1 ');
79 exit (0 );
80}
81 // deduct gold coins
82 $ dsql-> ExecuteNoneQuery ("update' #@__ member' SET money = money-$ topMoney WHERE 83mid = '". $ pai_ml-> M_ID ."'");
84}

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What type is your 83mid? If it is int type, you cannot add ''. remember to report an error.
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It is not good to see that there is a missing one marked in red; the end of the semicolon