php - PHP DBH->fetch() 和 fetchAll()，有没有办法摆脱返回数组中的“编号”项目？

Question

我从一个 PHP 文档页面复制并粘贴示例，因为情况类似：当我使用 DBH->fetch() 执行 MySQL 查询时，我获得了一个数组：

<?php
$sth = $dbh->prepare("SELECT name, colour FROM fruit");
$sth->execute();

/* Fetch all of the remaining rows in the result set */
print("Fetch all of the remaining rows in the result set:\n");
$result = $sth->fetchAll();
print_r($result);
?>

输出将是：

Fetch all of the remaining rows in the result set:
Array
(
    [0] => Array
        (
            [name] => pear
            [0] => pear
            [colour] => green
            [1] => green
        )

    [1] => Array
        (
            [name] => watermelon
            [0] => watermelon
            [colour] => pink
            [1] => pink
        )
)

有一种方法可以告诉驱动程序只返回“命名”数组元素并删除带有数字索引的元素吗？就像是：

Fetch all of the remaining rows in the result set:
Array
(
    [0] => Array
        (
            [name] => pear
            [colour] => green
        )

    [1] => Array
        (
            [name] => watermelon
            [colour] => pink
        )
)

在此先感谢，西蒙

Answer 1

Fetch_Assoc 仅返回命名数组。这是您的更改代码。

<?php
$sth = $dbh->prepare("SELECT name, colour FROM fruit");
$sth->execute();

/* Fetch all of the remaining rows in the result set */
print("Fetch all of the remaining rows in the result set:\n");
$result = $sth->fetch_assoc();
print_r($result);
?>