Can I shorten?

[karimali831]

Hi,

 

When a user POSTS 10 maps (dropdown), I don't want any two or more being the same.

From my knowledge, only way I know of doing this, is this very long messy way:

 

if($_POST['map1']==$_POST['map2'] || $_POST['map1']==$_POST['map3'] || $_POST['map1']==$_POST['map4'] || $_POST['map1']==$_POST['map5']) etc...

 

then I need to type if $_POST['map2']==$_POST['map1'] etc...

 

How can I put this in its simplest form so that there are no POST duplicates?

 

Thanks for any help.

[Alex]

You can create an array containing all the values of $_POST['mapx'], perform array_unique on the array and compare the length of the original array to the one returned by array_unique. If they are the same length then there were no duplicates, otherwise there were.

 

$arr = array(
    $_POST['map1'],
    $_POST['map2'],
    ...
);

if(sizeof($arr) != sizeof(array_unique($arr))) {
    // There was duplicates
}

[karimali831]

Hmm.. they are duplicates if they are not the same length or are the same?

Some maps however are the same length and some not:

 

bloodgulch

sidewinder

 

thanks again.

[Alex]

The length's of the individual maps isn't being compared. The length of the array of maps is. For example say your array looks like this:

 

array(1, 2, 3, 4);

 

When you perform array_unique on it the result will still look like this:

 

array(1, 2, 3, 4);

 

Because there are no duplicates. But if we had an array like this:

 

array(1, 1, 2, 3);

 

The result from array_unique would look like this:

 

array(1, 2, 3);

 

The duplicates were removed and we can tell that there was a duplicate because the size of the array that we input is different from the size of the array that was output (meaning duplicates were stripped).

[karimali831]

thanks 

will give it ago.

[litebearer]

Couldn't he save a step (or more) by simply using the result of array_unique()?

[Alex]

Couldn't he save a step (or more) by simply using the result of array_unique()?

Not according to what he wants, in the first post he said he wants all 10 maps to be unique.

[karimali831]

That depends, (depending on the setting) - user can select from 1 map to 5  or 1 date to 5 (extending to 10 later)

The long bit:

 

Maps:

     if($ds['select_map']==1) {
       if($_POST['map1']==$_POST['map2'] || $_POST['map1']==$_POST['map3'] || $_POST['map1']==$_POST['map4'] || $_POST['map1']==$_POST['map5'])
        die('Map option 1 has been selected multiple times!');
        $select_map = "map1='".$_POST['map1']."',";
     }elseif($ds['select_map']==2) {
       if($_POST['map1']==$_POST['map2'] || $_POST['map1']==$_POST['map3'] || $_POST['map1']==$_POST['map4'] || $_POST['map1']==$_POST['map5'])
        die('Map option 1 has been selected multiple times!');
       if($_POST['map2']==$_POST['map1'] || $_POST['map2']==$_POST['map3'] || $_POST['map2']==$_POST['map4'] || $_POST['map2']==$_POST['map5'])
        die('Map option 2 has been selected multiple times!');
        $select_map = "map1='".$_POST['map1']."', map2='".$_POST['map2']."',";
     }elseif($ds['select_map']==3) {
       if($_POST['map1']==$_POST['map2'] || $_POST['map1']==$_POST['map3'] || $_POST['map1']==$_POST['map4'] || $_POST['map1']==$_POST['map5'])
        die('Map option 1 has been selected multiple times!');
       if($_POST['map2']==$_POST['map1'] || $_POST['map2']==$_POST['map3'] || $_POST['map2']==$_POST['map4'] || $_POST['map2']==$_POST['map5'])
        die('Map option 2 has been selected multiple times!');
       if($_POST['map3']==$_POST['map2'] || $_POST['map3']==$_POST['map1'] || $_POST['map3']==$_POST['map4'] || $_POST['map3']==$_POST['map5'])
        die('Map option 3 has been selected multiple times!');
        $select_map = "map1='".$_POST['map1']."', map2='".$_POST['map2']."', map3='".$_POST['map3']."',";
     }elseif($ds['select_map']==4) {
       if($_POST['map1']==$_POST['map2'] || $_POST['map1']==$_POST['map3'] || $_POST['map1']==$_POST['map4'] || $_POST['map1']==$_POST['map5'])
        die('Map option 1 has been selected multiple times!');
       if($_POST['map2']==$_POST['map1'] || $_POST['map2']==$_POST['map3'] || $_POST['map2']==$_POST['map4'] || $_POST['map2']==$_POST['map5'])
        die('Map option 2 has been selected multiple times!');
       if($_POST['map3']==$_POST['map2'] || $_POST['map3']==$_POST['map1'] || $_POST['map3']==$_POST['map4'] || $_POST['map3']==$_POST['map5'])
        die('Map option 3 has been selected multiple times!');
       if($_POST['map4']==$_POST['map2'] || $_POST['map4']==$_POST['map3'] || $_POST['map4']==$_POST['map1'] || $_POST['map4']==$_POST['map5'])
        die('Map option 4 has been selected multiple times!');
        $select_map = "map1='".$_POST['map1']."', map2='".$_POST['map2']."', map3='".$_POST['map3']."', map4='".$_POST['map4']."',";
     }elseif($ds['select_map']==5) {
       if($_POST['map1']==$_POST['map2'] || $_POST['map1']==$_POST['map3'] || $_POST['map1']==$_POST['map4'] || $_POST['map1']==$_POST['map5'])
        die('Map option 1 has been selected multiple times!');
       if($_POST['map2']==$_POST['map1'] || $_POST['map2']==$_POST['map3'] || $_POST['map2']==$_POST['map4'] || $_POST['map2']==$_POST['map5'])
        die('Map option 2 has been selected multiple times!');
       if($_POST['map3']==$_POST['map2'] || $_POST['map3']==$_POST['map1'] || $_POST['map3']==$_POST['map4'] || $_POST['map3']==$_POST['map5'])
        die('Map option 3 has been selected multiple times!');
       if($_POST['map4']==$_POST['map2'] || $_POST['map4']==$_POST['map3'] || $_POST['map4']==$_POST['map1'] || $_POST['map4']==$_POST['map5'])
        die('Map option 4 has been selected multiple times!');
       if($_POST['map5']==$_POST['map2'] || $_POST['map5']==$_POST['map3'] || $_POST['map5']==$_POST['map4'] || $_POST['map5']==$_POST['map1'])
        die('Map option 5 has been selected multiple times!');
        $select_map = "map1='".$_POST['map1']."', map2='".$_POST['map2']."', map3='".$_POST['map3']."', map4='".$_POST['map4']."', map5='".$_POST['map5']."',";
     }else
        $select_map = '';
        

 

Dates:

    if($ds['select_date']==1) {
       if($_POST['date1']==$_POST['date2'] || $_POST['date1']==$_POST['date3'] || $_POST['date1']==$_POST['date4'] || $_POST['date1']==$_POST['date5'])
        die('Date option 1 has been selected multiple times!');
        $select_date = "date1='".$_POST['date1']."',";
     }elseif($ds['select_date']==2) {
       if($_POST['date1']==$_POST['date2'] || $_POST['date1']==$_POST['date3'] || $_POST['date1']==$_POST['date4'] || $_POST['date1']==$_POST['date5'])
        die('Date option 1 has been selected multiple times!');
       if($_POST['date2']==$_POST['date1'] || $_POST['date2']==$_POST['date3'] || $_POST['date2']==$_POST['date4'] || $_POST['date2']==$_POST['date5'])
        die('Date option 2 has been selected multiple times!');
        $select_date = "date1='".$_POST['date1']."', date2='".$_POST['date2']."',";
     }elseif($ds['select_date']==3) {
       if($_POST['date1']==$_POST['date2'] || $_POST['date1']==$_POST['date3'] || $_POST['date1']==$_POST['date4'] || $_POST['date1']==$_POST['date5'])
        die('Date option 1 has been selected multiple times!');
       if($_POST['date2']==$_POST['date1'] || $_POST['date2']==$_POST['date3'] || $_POST['date2']==$_POST['date4'] || $_POST['date2']==$_POST['date5'])
        die('Date option 2 has been selected multiple times!');
       if($_POST['date3']==$_POST['date2'] || $_POST['date3']==$_POST['date1'] || $_POST['date3']==$_POST['date4'] || $_POST['date3']==$_POST['date5'])
        die('Date option 3 has been selected multiple times!');
        $select_date = "date1='".$_POST['date1']."', date2='".$_POST['date2']."', date3='".$_POST['date3']."',";
     }elseif($ds['select_date']==4) {
       if($_POST['date1']==$_POST['date2'] || $_POST['date1']==$_POST['date3'] || $_POST['date1']==$_POST['date4'] || $_POST['date1']==$_POST['date5'])
        die('Date option 1 has been selected multiple times!');
       if($_POST['date2']==$_POST['date1'] || $_POST['date2']==$_POST['date3'] || $_POST['date2']==$_POST['date4'] || $_POST['date2']==$_POST['date5'])
        die('Date option 2 has been selected multiple times!');
       if($_POST['date3']==$_POST['date2'] || $_POST['date3']==$_POST['date1'] || $_POST['date3']==$_POST['date4'] || $_POST['date3']==$_POST['date5'])
        die('Date option 3 has been selected multiple times!');
       if($_POST['date4']==$_POST['date2'] || $_POST['date4']==$_POST['date3'] || $_POST['date4']==$_POST['date1'] || $_POST['date4']==$_POST['date5'])
        die('Date option 4 has been selected multiple times!');
        $select_date = "date1='".$_POST['date1']."', date2='".$_POST['date2']."', date3='".$_POST['date3']."', date4='".$_POST['date4']."',";
     }elseif($ds['select_date']==5) {
       if($_POST['date1']==$_POST['date2'] || $_POST['date1']==$_POST['date3'] || $_POST['date1']==$_POST['date4'] || $_POST['date1']==$_POST['date5'])
        die('Date option 1 has been selected multiple times!');
       if($_POST['date2']==$_POST['date1'] || $_POST['date2']==$_POST['date3'] || $_POST['date2']==$_POST['date4'] || $_POST['date2']==$_POST['date5'])
        die('Date option 2 has been selected multiple times!');
       if($_POST['date3']==$_POST['date2'] || $_POST['date3']==$_POST['date1'] || $_POST['date3']==$_POST['date4'] || $_POST['date3']==$_POST['date5'])
        die('Date option 3 has been selected multiple times!');
       if($_POST['date4']==$_POST['date2'] || $_POST['date4']==$_POST['date3'] || $_POST['date4']==$_POST['date1'] || $_POST['date4']==$_POST['date5'])
        die('Date option 4 has been selected multiple times!');
       if($_POST['date5']==$_POST['date2'] || $_POST['date5']==$_POST['date3'] || $_POST['date5']==$_POST['date4'] || $_POST['date5']==$_POST['date1'])
        die('Date option 5 has been selected multiple times!');
        $select_date = "date1='".$_POST['date1']."', date2='".$_POST['date2']."', date3='".$_POST['date3']."', date4='".$_POST['date4']."', date5='".$_POST['date5']."',";
     }else
        $select_date = ',';