Simple code. Thank you for your guidance.

For simplified code. It takes about half a month to guide csdn. I have gained a lot and want to settle down here. I like the atmosphere and the great gods here. If (empty ($ grouptypeid) {ShowMsg ('specify the exam! ', & Nbsp;'-1'); & nbsp; & about simplified code. Thank you for your guidance.
It has been half a month since the csdn deployment. I have gained a lot and want to settle down here.
I like the atmosphere and the great gods here.

If (empty ($ grouptypeid )){
ShowMsg ('specify the exam! ','-1 ');
Exit ();
} If (empty ($ content )){
ShowMsg ('content cannot be blank! ','-1 ');
Exit ();
} If (empty ($ teachername )){
ShowMsg ('select the instructor! ','-1 ');
Exit ();
} If (empty ($ years )){
ShowMsg ('select a date', '-1 ');
Exit ();
} If (empty ($ isupdate )){
ShowMsg ('select the update date', '-1 ');
Exit ();
}

How can this be simply written?
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