MySQL / PHP：如何在准备好的语句中将参数绑定到两个(？)？

如果这是我的代码：

    $mysqli = new mysqli("localhost", "user", "password", "mydb");

    $city = "Some";

    $q = "SELECT District FROM City WHERE (Name=? OR ? IS NULL)";

    if ($stmt = $mysqli->prepare($q)) {

        // How to Bind $city here?
    }

如何将$city绑定到两个？

还是有更好的方法来做到这一点？

解决方法:

你可以这样做

$stmt -> bind_param("for first ?", 'for second ?');

或尝试像

   /* Bind our params */
    $stmt->bind_param('ss', $Name, $city);

    /* Set our params */
    $Name= "hello";
    $city= "city";

    /* Execute the prepared Statement */
    $stmt->execute();

值可以是：

i - Integer
d - Decimal
s - String
b - Blob (sent in packets)

标签：mysqli,prepared-statement,php
来源： https://codeday.me/bug/20191031/1976434.html