Upload image

        $image_name=basename($_FILES["p_img"]["name"]);
        $alphabet = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';
        $pass = ''; //remember to declare $pass as an array
        $alphaLength = strlen($alphabet) - 1; //put the length -1 in cache
        for ($i = 0; $i < 15; $i++) {
            $n = rand(0, $alphaLength);
            $pass = $pass . $alphabet[$n];
        }
            
        $passtype=$pass;
        $target_dir = public_url("uploads/product/");
        $imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));

        $target_file = $target_dir . basename($passtype);
        $uploadOk = 1;
    
        
        if (move_uploaded_file($_FILES["p_img"]["tmp_name"], $target_file)) {
            echo "The file ". htmlspecialchars( basename( $passtype)). " has been uploaded.";
        } else {
            echo "Sorry, there was an error uploading your file.";
        }