php删除数据函数

```php

function deleteData($tableName, $condition) {

$conn = new mysqli("localhost", "username", "password", "database");

if ($conn->connect_error) {

die("Connection failed: " . $conn->connect_error);

}

$sql = "DELETE FROM $tableName WHERE $condition";

if ($conn->query($sql) === TRUE) {

echo "Record deleted successfully";

} else {

echo "Error deleting record: " . $conn->error;

}

$conn->close();

}

```

要删除数据的表名和删除条件。通过mysqli对象执行SQL语句来完成数据的删除。

在快递、物流路径优化和导航定位方面，PHP删除数据函数发挥重要的作用。在进行路径优化时可能删除些已经失效的路线信息；在导航定位中可能定期清理些旧的位置数据。