Php mysqli_fetch_数组只返回一个结果

我试图使用以下代码（使用$host等适当的值）对一个小型mysql数据库进行非常简单的查询：

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该专栏中有一些大学的例子，所以我不确定我做错了什么。

mysqli\u fetch\u数组每次调用时都通过指针工作

想象一下

$result = mysqli_query($connection, "select university from universities_alpha");
$row = mysqli_fetch_array($result); // this is the first row
$row = mysqli_fetch_array($result); // now it's the second row
$row = mysqli_fetch_array($result); // third row

$rows = array();
$result = mysqli_query($connection, "select university from universities_alpha");
while($row = mysqli_fetch_array($result)) {
    $rows[] = $row;
}

print_r($rows);

要以您希望的方式实际显示数据，我建议您执行以下操作

$result = mysqli_query($connection, "select university from universities_alpha");
$row = mysqli_fetch_array($result); // this is the first row
$row = mysqli_fetch_array($result); // now it's the second row
$row = mysqli_fetch_array($result); // third row

$rows = array();
$result = mysqli_query($connection, "select university from universities_alpha");
while($row = mysqli_fetch_array($result)) {
    $rows[] = $row;
}

print_r($rows);

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如果要从结果集中获取所有行，则必须使用而不是

将代码替换为以下内容：

$result = mysqli_query($connection, "select university from universities_alpha");
$rows = mysqli_fetch_all($result, MYSQLI_BOTH);

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请阅读mysqli功能手册。将

fetch\u数组

放入

while

循环中，因为它逐个返回行，直到返回null，循环终止。