我正在嘗試使用按鈕從PHP加載數(shù)據(jù)庫中的更多數(shù)據(jù)。到現(xiàn)在為止，我可以計算結(jié)果和顯示的結(jié)果。因此，當(dāng)$ count == $ countAll時，通常會顯示所有結(jié)果。有人可以解釋為什么這行不通嗎？// Count all results$allResults = $conn->prepare("SELECT*FROM tl_picture WHERE text LIKE '%$innerhtml%' ORDER BY id DESC");$allResults->execute();$countAll =$allResults->rowCount();echo "Found results: ".$countAll."<br>";//max 20 results showing$statement = $conn->prepare("SELECT*FROM tl_picture WHERE text LIKE '%$innerhtml%' ORDER BY id DESC  limit 20");$statement->execute();$collection = $statement->fetchAll();$count =$statement->rowCount();echo "viewable results: ". $count;<script><?php if($count==$countAll): ?>        document.GetElementById('loadButton').style.display='none';    } else {        document.GetElementById('loadButton').style.display='block';    }    <?php endif; ?></script>