combining values from mysql seperated by comma using explode - php

Question

I have two columns in my mysql table pro_id and pro_page. Each column contains integer values separated by comma.
example,
pro_id pro_page
-------- ------------
1,2,3 1,1,1
2 1
3,4 2,1
I want to combine first integer value from pro_id and first integer value from pro_page, second integer value from pro_id and second integer value from pro_page and so on.
For example,
from first row, result should be 11 21 31
from second row, result should be 21
from third row, result should be 32 41
I have tried using the below code,
$query = "SELECT pro_id, pro_page from tbl_checkout";
$result = mysqli_query($c,$query)or die(mysqli_error($c));
$length = mysqli_num_rows($result);
while($row = mysqli_fetch_array($result1))
{
$pro_id[] = $row["pro_id"];
$pro_page[] = $row['pro_page'];
}
for($i=0; $i<$length1; $i++)
{
$pro_id = explode(",", #$pro_id[$i]);
$pro_page = explode(",", #$pro_page[$i]);
foreach($pro_id as $product_id) {
$product_id = $product_id;
echo $product_id;
}
foreach($pro_page as $product_page) {
echo $product_page;
}
}
Now the result is,
from first row, 123111
from second row, 21
from third row, 3421
Is there any way to achieve what i want. I have tried a lot.

Answer 1

After fetching the array from database do the following:
$output = array();
while($row = mysqli_fetch_array($result1))
{
$pro_id = explode(',' , $row["pro_id"]);
$pro_page = explode(',' , $row['pro_page']);
for($i = 0; $i< count($pro_id); $i++)
{
$output[$i] = $pro_id[$i] . $pro_page[$i];
}
return $output;
}

Answer 2

You can do it via single foreach if you numbers amount is same in both arrays
$products = explode(",", #$pro_id[$i]);
$pages = explode(",", #$pro_page[$i]);
foreach( $products as $k => $product_id){
$product_page = $pages[$k];
echo $product_id . $product_page . " ";
}

Answer 3

Try below code:
$query = "SELECT pro_id, pro_page from tbl_checkout";
$result = mysqli_query($c,$query)or die(mysqli_error($c));
$length = mysqli_num_rows($result);
while($row = mysqli_fetch_array($result1))
{
$pro_id[] = $row["pro_id"];
$pro_page[] = $row['pro_page'];
}
for($i=0; $i<$length1; $i++){
$pro_id = explode(",", #$pro_id[$i]);
$pro_page = explode(",", #$pro_page[$i]);
$newProduct_id = '';
foreach($pro_id AS $keyIndex => $product_id) {
$newProduct_id = $pro_id[$keyIndex] . $pro_page[$keyIndex] . " ";
echo $newProduct_id;
}
}

Answer 4

You have to loop over both arrays at once. Easiest when using for():
$query = "SELECT pro_id, pro_page from tbl_checkout";
$result = mysqli_query($c,$query)or die(mysqli_error($c));
$length = mysqli_num_rows($result);
while($row = mysqli_fetch_array($result1))
{
$pro_id[] = $row["pro_id"];
$pro_page[] = $row['pro_page'];
}
for($i=0; $i<$length1; $i++)
{
// don't assign to $pro_id and $pro_page as variable name: it will mess up your data!
$tmp_id = explode(",", $pro_id[$i]);
$tmp_page = explode(",", $pro_page[$i]);
for($c=0; $c < count($tmp_id)) {
echo $tmp_id[$c];
echo $tmp_page[$c];
}
}
Another problerm is that you use $pro_id and $pro_page for two different purposes. You use it for storage of db results and to store the exploded numbers from this data. Use different variable names.