thanks alot roboticus. and i made some changes according to wat i want

the problem i have where to put placeholder in mysql statment to be safe from sql injection. second my statement is like this

$myid = 1;
 select msg_from FROM msg WHERE msg_to = $myid
so am selecting only where msg came from who sent it where all people 
+sent msg to me - my userid 1

msg_from is the id which shows this msg is from this userid from tble 
+users.
so msg_to is my userid the acct owner. so msg comes to me. but i need 
+to see who sent them.
[download]

so this is 

msg_from = userid
msg_to   = to me. my userid (1)

so am selecting all people who sent msg to my userid -my userid 1
bt the problem is in the sql statement bt the rest is ok
[download]

thanks alot

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