Php/func mysqli fetch array

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PHP mysqli fetch_array()函数

MySQL PHP MySQLi参考

示例-面向对象的样式

以数字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();
?>



在底部查看程序样式的示例。

定义和用法

fetch_array()/ mysqli_fetch_array()函数以关联数组,数值数组或两者兼有的方式获取结果行。

注意: 从此函数返回的字段名称区分大小写。

句法

面向对象的样式:

$mysqli_result -> 
  fetch_array(resulttype)

程序风格:

mysqli_fetch_array(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
  • MYSQLI_BOTH(默认设置)

技术细节

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

示例-程序风格

以数字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);

?>



MySQL PHP MySQLi参考