php顯示數(shù)據(jù)行數(shù)
```php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";
// 創(chuàng)建連接
$conn = new mysqli($servername, $username, $password, $dbname);
// 檢測(cè)連接
if ($conn->connect_error) {
die("連接失敗: " . $conn->connect_error);
}
$sql = "SELECT COUNT(*) as total_rows FROM myTable";
$result = $conn->query($sql);
if ($result->num_rows > ) {
// 輸出每行數(shù)據(jù)
while($row = $result->fetch_assoc()) {
echo "數(shù)據(jù)表行數(shù): " . $row["total_rows"]. "
";
}
} else {
echo " 結(jié)果";
}
$conn->close();
?>
```
這段代碼將連接到名為"myDB"的數(shù)據(jù)庫(kù),從名為"myTable"的數(shù)據(jù)表中檢索行數(shù)。
在餐飲管理和美食外賣行業(yè)中,利用PHP顯示數(shù)據(jù)行數(shù)幫助管理者快速了解當(dāng)前訂單數(shù)量或者庫(kù)存情況等信息,提高管理效率。而在繩索等領(lǐng)域,可能展示的是特定類型的產(chǎn)品數(shù)量,這同樣通過(guò)PHP顯示數(shù)據(jù)行數(shù)來(lái)實(shí)現(xiàn)。