Php/func mysqli fetch all

来自菜鸟教程
跳转至:导航、​搜索

PHP mysqli fetch_all()函数

MySQL PHP MySQLi参考

示例-面向对象的样式

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();
?>



在底部查看程序样式的示例。

定义和用法

fetch_all()/ mysqli_fetch_all()函数获取所有结果行,并以关联数组,数字数组或两者兼有的形式返回结果集。

注意: 该功能仅在MySQL本机驱动程序中可用。

句法

面向对象的样式:

$mysqli_result -> 
  fetch_all(resulttype)

程序风格:

mysqli_fetch_all(result, resulttype)

参数值

参数 描述
result 需要。指定mysqli_query(),mysqli_store_result()或mysqli_use_result()返回的结果集标识符
resulttype

可选的。指定应生成的数组类型。可以是以下值之一:

  • MYSQLI_ASSOC
  • MYSQLI_NUM(默认设置)
  • MYSQLI_BOTH

技术细节

返回值: 返回包含结果行的关联或数字数组的数组
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);

?>



MySQL PHP MySQLi参考