Select distinct and ajax?

First attach my program example {code ...} del {code ...} the above is my program... however, I cannot operate it. so I want to see if this method is correct? If you confirm that the id and the table name are correct, please attach your program first.

Division$ (". Box "). click (function (e) {var removetype = e. currentTarget. dataset. removetype;/* mailbox */if (removetype = 'SELECT _ del ') {$. ajax ({type: "POST", url: "del? To = "+ removetype, data: $ (" # selectid "). serialize (), cache: false, success: function (){}});}});

Del

$ User = $ _ GET ['to']; if ($ user = 'SELECT _ del ') {$ getid = $ _ POST ['id']; foreach ($ getid as $ value) {$ DEL = mysql_query ("delete from 'item table name comment 'where' ID' = '". $ value. "'");}}

The above is my program...
However, there is no way to operate
So I want to see if this method is correct?
Whether the id and the data table name are correct

Reply content:

First, attach my program example

Division$ (". Box "). click (function (e) {var removetype = e. currentTarget. dataset. removetype;/* mailbox */if (removetype = 'SELECT _ del ') {$. ajax ({type: "POST", url: "del? To = "+ removetype, data: $ (" # selectid "). serialize (), cache: false, success: function (){}});}});

Del

$ User = $ _ GET ['to']; if ($ user = 'SELECT _ del ') {$ getid = $ _ POST ['id']; foreach ($ getid as $ value) {$ DEL = mysql_query ("delete from 'item table name comment 'where' ID' = '". $ value. "'");}}

The above is my program...
However, there is no way to operate
So I want to see if this method is correct?
Whether the id and the data table name are correct

data:$("#selectid").serialize()

You can try to replace

data:$("#selectid").find('input').serialize()

If not, I think you need to check whether the script is written in compliance with the specifications. for example:
selected " >RETURN

You write this

  "> } ?>

I don't think it works ....