PHP mysqli fetch_assoc() 函数

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。

注意：从该函数返回的字段名是区分大小写的。

实例

例子 1 - 面向对象风格

以关联数组的形式获取结果行：

<?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);

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

// 释放结果集
$result -> free_result();

$mysqli -> close();
?>

例子 2 - 过程式风格

以关联数组的形式获取结果行：

<?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);

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

// 释放结果集
mysqli_free_result($result);

mysqli_close($con);
?>

语法

面向对象风格：

$mysqli_result -> fetch_assoc()

过程式风格：

mysqli_fetch_assoc(result)

技术细节