while循环内for循环PHP

Question

i'm trying to display a while loop depending on the parameters in my for loop. for example, my for loop says to loop through 5 times, the data inside while loop should also be displayed 5 times. however, when i tested my code, the data inside while loop only displays once. i'm not sure if i did the iteration correctly. here is a snippet of my nested loop.

for($i=0; $i<$count; $i++){

            echo "COUNT: ".$i."<br>";
            while($data=mysqli_fetch_array($res)) { 
                echo "INSIDE WHILE".$i."<br>";
                }

        }

so if my $count = 3, the output of this code is

0
INSIDE WHILE0
INSIDE WHILE0
INSIDE WHILE0
INSIDE WHILE0
INSIDE WHILE0
INSIDE WHILE0
INSIDE WHILE0

1

2

and what i want is for "INSIDE WHILE" to also be displayed between 1 and 2.

Answer 1

Just add mysqli_data_seek after the while loop:

for($i=0; $i<$count; $i++){
    echo "COUNT: ".$i."<br>";
    while($data=mysqli_fetch_array($res)) { 
        echo "INSIDE WHILE".$i."<br>";
    }
    mysqli_data_seek($res, 0);
}

Answer 2

$data=mysqli_fetch_array($res, MYSQLI_ASSOC);

for($i=0; $i<$count; $i++){
    echo "COUNT: ".$i."<br>";
    foreach ($data as $current_data){
          echo "INSIDE WHILE".$i."<br>";
          echo $current_data[name]; //name is the field name.
    }
}

You can move the fetch on top, so you don't have to reset the cursor of the fetch.