mysqli data fetch using explode no result getting

Question

From table, i am fetching $rows['colorVariants']; but its value i am getting like:-

[JEADV9Q23ESG25HY,JEADV9Q2NFRNYV5Q,JEADV9Q2PNBTXGNX,JEADV9Q2XKWPXWSX,JEADY8ABWH9XNF4B,JEADZWEBDHWRJ2NQ,JEADZWEBRWZ4B4VS,JEADZWEBXDCGSYCF,JEAEYYX95YYC4DRA]

Then i used substr to remove square bracket.

Explode this value and again need to fetch it it the same table for similar products, but i am not getting any result.

<?php
$table = table1; // Table Name
$mysqli = mysqli connection // Mysqli Connection here

$result = $mysqli->query( "SELECT * FROM $table_name WHERE `id` = '$q' ");
while ( $rows =  $result->fetch_assoc() ) {

$rows['colorVariants'] = [JEADV9Q23ESG25HY,JEADV9Q2NFRNYV5Q,JEADV9Q2PNBTXGNX,JEADV9Q2XKWPXWSX,JEADY8ABWH9XNF4B,JEADZWEBDHWRJ2NQ,JEADZWEBRWZ4B4VS,JEADZWEBXDCGSYCF,JEAEYYX95YYC4DRA] // Result Copy Sample

// substr using for remove square bracket
$colorVariants = substr($rows['colorVariants'], 1);
$newColorVariants = substr($colorVariants, 0, '-1');
$finalColorVariants = explode(',', $newColorVariants);
}
?>

<?php
for($i = 0; $i < count($finalColorVariants); $i++) {
$color = $finalColorVariants[$i];
$color = $mysqli->real_escape_string($color);

$colorVariants = $mysqli->query( "SELECT id,store,title,imageUrlStr,mrp,price,productBrand FROM $table_name WHERE `productId` = '".$color."' ");
if ($colorVariants) {
while ($rows = $colorVariants->fetch_assoc()) { 
$id1 = $rows['id'];
$store1 = $rows['store'];
$title1 = $rows['title'];
$imageUrlStr1 = $rows['imageUrlStr'];
$mrp1 = $rows['mrp'];
$price1 = $rows['price'];
$productBrand1 = $rows['productBrand'];

}

?>
            <div class="cloth-inner-similar-box">
                <div class="cloth-inner-similar-boxin">
                <a href="clothing?q=<?php echo $id1; ?>"><img src="<?php echo $imageUrlStr1; ?>" /></a>
                </div>
                <div class="cloth-inner-similar-boxin-offer">
                    <div class="cloth-inner-similar-boxin-offer-in">
                    <p>30% OFF</p>
                    </div>
                </div>

                <div class="cloth-inner-similar-boxin-head">
                    <a href="clothing?q=<?php echo $id1; ?>"><?php echo $title1; ?></a>
                </div>
                <div class="cloth-inner-similar-price border-solid-bottom border-solid-top">
                <a href="clothing?q=<?php echo $id1; ?>">Best Buy  &#64; <?php echo $price1; ?>/-</a><a href="<?php echo $id1; ?>" class="href"><?php echo $productBrand1; ?></a>
                </div>

                </div>
<?php
} }
$mysqli->close();
?>