hi all,
i tried to call an array like this :

$array = array(3,4);
echo $tt= array_sum($array);

but it showes an error like bellow :

Fatal error: Call to unsupported or undefined function array_sum()

any body here to help me

    first confirm you are running a PHP version that supports the function, according to the manual it was added in v4.04

    I did a quick test and its work with the current v4.1.0 builds

      What version of PHP are you using? array_sum() is not supported in versions earlier than 4.0.4.

      -geoff

        thanks for the information. Actually i'm working on php 3 versions.

          Well, that'd explain it🙂 The second line (right below the function name) of every function reference in the manual tells you what versions the function is supported in.

          -geoff

            Since php 3.0 doesn't support array_sum(), you'll have to upgrade to newer version or write array_sum() yourself.

            function my_array_sum($array)
            {
            $sum=0;
            for($i=0; $i<count($array); $i++)
            if(ctype_digit($array[$i]))
            $sum+=$array[$i];
            else
            return -1;
            }

            Di

              thanks but still have the follwing error with my code ...

              $tsel=("select AcctSessionTime from new_acct");
              $tssel=mysql_query($tsel) or die("Failed to perform the action.");
              while ($trow=mysql_fetch_array($tssel))
              {
              $mhr=$trow["AcctSessionTime"];

              function my_array_sum($mhr)
              {
              $sum=0;
              for($i=0; $i<count($array); $i++)
              if(ctype_digit($array[$i]))
              $sum+=$array[$i];
              else
              return -1;
              }
              }

              please tell me where is the problem.

              sayma

                The problem is that you don't know how to implement functions.

                You do not declare a function inside a while loop. Plus, why do you need array_sum()???

                Seems to me that you code, could be rewritten as

                $sum=0;
                while ($trow=mysql_fetch_array($tssel))
                $sum+=$trow["AcctSessionTime"];

                You don't need array_sum to be used within while loop because you are fetching only one value at a time... So if you pass one value as an array -> that's incorrect, because if array contains only one value, then the sum would be that one value.

                Di

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