MySQL PHP result stripping leading zeros. Don't know why or how to fix

[tunnelboy]

Database column SKU is set up as varchar(30)
Sample SKU items in DB:

MG1334
866jj6
34249
0MFG88367
00A
MUJY082JLKKSOY

$sql = "SELECT sku from marketplace";
$resultdID=$db->query($sql)->fetchAll();
   foreach($resultdID as $row) {
   echo $row['sku']."<br>";
   }

Results:

MG1334
866jj6
34249
MFG88367
A
MUJY082JLKKSOY

What's going on and how to prevent it? When I browse my data with PhpMyAdmin, I have other tables in my system with similar data and I never experienced anything like this. Google Search results say to set my column as VARCHAR but it was always that from day one.

Thanks

 

[requinix]

What does var_dump($row['sku']) output?