php在for循环中调用几个函数

Question

Is it possible to call functions within for loops? I have a number of databases that are exactly the same, I would like to use a for loop to set up the connections one at a time (35 databases). I am having trouble with getting php to declare a function with a variable in the name.

for ($i = 1; $i <= 35; $i++) 
{
    $j=$i+2;
    echo "<br><br>DB $i";
    $connection$j = prodDB$i();
    $getFromDB = "select URL, count(id) as counts from ProductList GROUP BY URL";
    $NamesReturned = mysqli_query($connection$j,$getFromDB) or die("Can't execute query GFNFDB.<br><br>$getFromDB<br><br>");
    while ($ret=mysqli_fetch_array($NamesReturned))
    {
        $DB$icounts=$ret["counts"];
        $URL=$ret["URL"];
        echo "<br>$DB$icounts -- $URL";
    }
    echo "<br>$DB$icounts";
}

Answer 1

I think what you need to use is braces. Eg: $connection{$j}=prodDB{$i}();

I could be wrong though. It has been a long time since i did it.

You might be better using arrays and/or passing parameters to your functions. Eg:

$connection[$j]=prodDB($i);