PHP mysqli fetch_assoc() 函数
示例 - 面向对象的样式
从结果集中取得一行作为关联数组：
<?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();
?>
$mysqli = new mysqli("localhost","my_user","my_password","my_db");
if ($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() 函数从结果集中取得一行作为关联数组。
注释： 该函数返回的字段名是区分大小写的。
语法
面向对象的风格：
$mysqli_result -> fetch_assoc()
程序风格：
mysqli_fetch_assoc(result)
参数值
| 参数 | 描述 |
|---|---|
| result | 必需。规定由 mysqli_query()、mysqli_store_result() 或 mysqli_use_result() 返回的结果集标识符。 |
技术细节
| 返回值: | 返回代表读取行的关联数组。如果结果集中没有更多的行则返回 NULL。 |
|---|---|
| PHP 版本: | 5+ |
示例 - 程序样式
从结果集中取得一行作为关联数组：
<?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);
?>
$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);
?>
