PHP mysqli fetch_assoc() 函数

示例 - 面向对象风格

获取结果行作为关联数组：

<?php
$mysqli = new mysqli("localhost","my_user","my_password","my_db");

if ($mysqli -> connect_errno) {
echo "Failed to connect to MySQL: " . $mysqli -> connect_error;
exit();
}

$sql = "SELECT Lastname, Age FROM Persons ORDER BY Lastname";
$result = $mysqli -> query($sql);

// Associative array
$row = $result -> fetch_assoc();
printf ("%s (%s)\n", $row["Lastname"], $row["Age"]);

// Free result set
$result -> free_result();

$mysqli -> close();
?>

查看底部的程序样式示例。

定义和用法

fetch_assoc() / mysqli_fetch_assoc() 函数以关联数组的形式获取结果行。

笔记：从此函数返回的字段名称区分大小写。

语法

面向对象风格：

$mysqli_result -> fetch_assoc()

程序风格：

mysqli_fetch_assoc( result)

参数值

Parameter	Description
result	Required. Specifies a result set identifier returned by mysqli_query(), mysqli_store_result() or mysqli_use_result()

技术细节

返回值：	返回表示所获取行的字符串关联数组。如果结果集中没有更多行，则为 NULL
PHP 版本：	5+

示例 - 程序风格

获取结果行作为关联数组：

<?php
$con = mysqli_connect("localhost","my_user","my_password","my_db");
if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
exit();
}

$sql = "SELECT Lastname, Age FROM Persons ORDER BY Lastname";
$result = mysqli_query($con, $sql);

// Associative array
$row = mysqli_fetch_assoc($result);
printf ("%s (%s)\n", $row["Lastname"], $row["Age"]);

// Free result set
mysqli_free_result($result);

mysqli_close($con);
?>

❮ PHP MySQLi 参考