PHP do-while循环不起作用

Question

So I've been stuck on this do-while loop not working for about two hours. I really don't understand why it doesn't work. I'm getting this error:

Notice: Undefined offset: 9 in /public_html/me/yes.php on line 60

The only problem I think of is that it doesn't accept while loops in a do-while.

Here is my working code for just the inner while loop:

$maxcols = $numofcols-1; //=9
$maxrow = count($myarray)-1; //=44
$currentcol=0;
    $currentrow=1;
    //do {
    $collection->insert(array($title[$currentcol] => $myarray[$currentrow][$currentcol]));
    $currentcol++;
    while ($currentcol<=$maxcols){
    $newdata = array('$set' => array($title[$currentcol] => $myarray[$currentrow][$currentcol]));
    $currentcol--;
    $collection->update(array($title[$currentcol] => $myarray[$currentrow][$currentcol]), $newdata);
    $currentcol++;
    $currentcol++;

    }
    $currentrow++;

    //} while ($currentrow<=$maxrow);

If I uncomment the two line's "//do {" and "//} while ($currentrow<=$maxrow);" my program dies with the error I mentioned above. Is there something dead simple as to why it's breaking my code? Thanks in advance

UPDATE:

Line 60 is:

$collection->insert(array($title[$currentcol] => $myarray[$currentrow][$currentcol]));

Answer 1

The answer:

Such a simple little mistake, but there was no reset on the $currentcol

Moving the initialization down right below the do statement made it work correctly.Can you tell it's getting late? hahaha Thanks all.

$currentrow=1;

do {
$currentcol=0;

$collection->insert(array($title[$currentcol] => $myarray[$currentrow][$currentcol]));
$currentcol++;
while ($currentcol<=$maxcols){
$newdata = array('$set' => array($title[$currentcol] => $myarray[$currentrow][$currentcol]));
$currentcol--;
$collection->update(array($title[$currentcol] => $myarray[$currentrow][$currentcol]), $newdata);
$currentcol++;
$currentcol++;

}
$currentrow++;

} while ($currentrow<=$maxrow);