PHP get largest number from mysql table -


i have counted number of voters voted candidate want display 1 got highest voting number. tried store them in variables can use max() method got error "undefined ".any please

  <?php   $query="select count(*) total voting ca_id=1";   //ca_id candidate id voter choose  $result = mysql_query($query);  $row = mysql_fetch_assoc($result);  echo"$row[total]<br>";    $query="select count(*) total2 voting ca_id=2";  $result = mysql_query($query);  $row2 = mysql_fetch_assoc($result);  echo"$row2[total2]<br>";   $query="select count(*) total3 voting ca_id=3";  $result = mysql_query($query);  $row3 = mysql_fetch_assoc($result);  echo"$row3[total3]<br>";   $query="select count(*) total4 voting ca_id=5";  $result = mysql_query($query);  $row4 = mysql_fetch_assoc($result);  echo"$row4[total4]<br>";    ?> 

select count(1) co, ca_id voting group ca_id order co desc limit 5

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