PHP mysqli fetch_array() 函数

示例 - 面向对象风格

以数值数组和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);

// Numeric array
$row = $result -> fetch_array(MYSQLI_NUM);
printf ("%s (%s)\n", $row[0], $row[1]);

// Associative array
$row = $result -> fetch_array(MYSQLI_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_array() / mysqli_fetch_array() 函数以关联数组、数值数组或两者的形式获取结果行。

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_array( resulttype)

程序风格：

mysqli_fetch_array( result,resulttype)

参数值

Parameter	Description
result	Required. Specifies a result set identifier returned by mysqli_query(), mysqli_store_result() or mysqli_use_result()
resulttype	Optional. Specifies what type of array that should be produced. Can be one of the following values: MYSQLI_ASSOC MYSQLI_NUM MYSQLI_BOTH (this is default)

技术细节

返回值：	返回与所获取的行相对应的字符串数组。如果结果集中没有更多行，则为 NULL
PHP 版本：	5+

示例 - 程序风格

以数值数组和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);

// Numeric array
$row = mysqli_fetch_array($result, MYSQLI_NUM);
printf ("%s (%s)\n", $row[0], $row[1]);

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

// Free result set
mysqli_free_result($result);

mysqli_close($con);
?>

❮ PHP MySQLi 参考