help with making string from <OPTION> values

[seany123]

okay all i need is a way to make 4 <OPTION> values into a string which i can compare to a row in my db.

 

This is my form.

<select name='n1'> 
        <option value='0'>0</option> 
        <option value='1'>1</option> 
        <option value='2'>2</option> 
        <option value='3'>3</option> 
        <option value='4'>4</option> 
        <option value='5'>5</option> 
        <option value='6'>6</option> 
        <option value='7'>7</option> 
        <option value='8'>8</option> 
        <option value='9'>9</option> 
    </select> 
    <select name='n2'> 
        <option value='0'>0</option> 
        <option value='1'>1</option> 
        <option value='2'>2</option> 
        <option value='3'>3</option> 
        <option value='4'>4</option> 
        <option value='5'>5</option> 
        <option value='6'>6</option> 
        <option value='7'>7</option> 
        <option value='8'>8</option> 
        <option value='9'>9</option> 
    </select> 
    <select name='n3'> 
        <option value='0'>0</option> 
        <option value='1'>1</option> 
        <option value='2'>2</option> 
        <option value='3'>3</option> 
        <option value='4'>4</option> 
        <option value='5'>5</option> 
        <option value='6'>6</option> 
        <option value='7'>7</option> 
        <option value='8'>8</option> 
        <option value='9'>9</option> 
    </select> 
    <select name='n4'> 
        <option value='0'>0</option> 
        <option value='1'>1</option> 
        <option value='2'>2</option> 
        <option value='3'>3</option> 
        <option value='4'>4</option> 
        <option value='5'>5</option> 
        <option value='6'>6</option> 
        <option value='7'>7</option> 
        <option value='8'>8</option> 
        <option value='9'>9</option> 
    </select>

 

here is the php code which i tried but doesnt seem to work.

       $n1 = $_POST['n1'];
       $n2 = $_POST['n2'];
       $n3 = $_POST['n3'];
       $n4 = $_POST['n4'];
       
       $string = ("" . $n1 . "" . $n2 . "" . $n3 . "" . $n4 . "");

 

echoing $string does give to correct numbers.. but when i try and compare it to my database it doesnt match.

 

 

all help would be great.

[PFMaBiSmAd]

but when i try and compare it to my database it doesnt match

 

^^^ How do you know that?

 

And your code can be greatly simplified -

 

$string =  $n1 . $n2 . $n3 . $n4;

 

[seany123]

but when i try and compare it to my database it doesnt match

 

^^^ How do you know that?

 

And your code can be greatly simplified -

 

$string =  $n1 . $n2 . $n3 . $n4;

 

 

oh thankyou

 

becuase i have php code which compares it to a int in my db.

 

       if ($string == $user->nums){
  
           echo "MATCH";
           
       }

       if ($string != $user->nums){
  
           echo "NO MATCH";
           
       }

 

echoing $user->nums gives the correct value so its not that.

 

[PFMaBiSmAd]

You likely have a non-printing character stored as part of your data AND you would generally test a value in the query rather than actually retrieving the data and comparing it using some slow parsed, tokenized, interpreted php code. Your code will execute at least 10x faster.

 

Since you do have the values in php variables, use var_dump() on both of them to see what they actually contain.

[seany123]

the db var dump returned NULL...

 

wtf i dont understand how thats possible.

[PFMaBiSmAd]

Your code probably has an error in it somewhere.