PHP mysqli fetch_all() 函数

示例 - 面向对象风格

获取所有行并将结果集作为关联数组返回：

<?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);

// Fetch all
$result -> fetch_all(MYSQLI_ASSOC);

// 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_all() / mysqli_fetch_all() 函数获取所有结果行并将结果集作为关联数组、数值数组或两者返回。

笔记：此功能仅适用于 MySQL Native Driver。

语法

面向对象风格：

$mysqli_result -> fetch_all( resulttype)

程序风格：

mysqli_fetch_all( 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 (this is default) MYSQLI_BOTH

技术细节

返回值：	返回保存结果行的关联数组或数值数组
PHP 版本：	5.3+

示例 - 程序风格

获取所有行并将结果集作为关联数组返回：

<?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);

// Fetch all
mysqli_fetch_all($result, MYSQLI_ASSOC);

// Free result set
mysqli_free_result($result);

mysqli_close($con);
?>

❮ PHP MySQLi 参考