PHP - Manual: mysqli_result::fetch_row

2024-12-22

mysqli_result::$field_count »

« mysqli_result::fetch_object

mysqli_result::fetch_row

mysqli_fetch_row

(PHP 5, PHP 7, PHP 8)

mysqli_result::fetch_row -- mysqli_fetch_row — Fetch the next row of a result set as an enumerated array

说明

面向对象风格

public mysqli_result::fetch_row(): array|null|false

过程化风格

mysqli_fetch_row(mysqli_result $result): array|null|false

Fetches one row of data from the result set and returns it as an enumerated array, where each column is stored in an array offset starting from 0 (zero). Each subsequent call to this function will return the next row within the result set, or null if there are no more rows.

注意: 此函数将 NULL 字段设置为 PHP null 值。

参数

result: 仅以过程化样式：由 mysqli_query()、mysqli_store_result()、 mysqli_use_result()、mysqli_stmt_get_result() 返回的 mysqli_result 对象。

返回值

Returns an enumerated array representing the fetched row, null if there are no more rows in the result set, 或者在失败时返回 false.

范例

示例 #1 mysqli_result::fetch_row() example

面向对象风格


<?php

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

$query = "SELECT Name, CountryCode FROM City ORDER BY ID DESC";

$result = $mysqli->query($query);

/* fetch object array */
while ($row = $result->fetch_row()) {
    printf("%s (%s)\n", $row[0], $row[1]);
}

过程化风格


<?php

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = mysqli_connect("localhost", "my_user", "my_password", "world");

$query = "SELECT Name, CountryCode FROM City ORDER BY ID DESC";

$result = mysqli_query($mysqli, $query);

/* fetch associative array */
while ($row = mysqli_fetch_row($result)) {
    printf("%s (%s)\n", $row[0], $row[1]);
}

以上例程的输出类似于：

Pueblo (USA)
Arvada (USA)
Cape Coral (USA)
Green Bay (USA)
Santa Clara (USA)

参见

mysqli_fetch_array() - Fetch the next row of a result set as an associative, a numeric array, or both
mysqli_fetch_assoc() - Fetch the next row of a result set as an associative array
mysqli_fetch_column() - Fetch a single column from the next row of a result set
mysqli_fetch_object() - Fetch the next row of a result set as an object
mysqli_query() - 对数据库执行一次查询
mysqli_data_seek() - Adjusts the result pointer to an arbitrary row in the result

add a note

User Contributed Notes 4 notes

down

Stephen ¶

15 years ago


It's worth noting that the MySQLi functions (and, I presume, the MySQL functions) fetch a string regardless of the MySQL data type. E.g. if you fetch a row with an integer column, the corresponding value for that column and row will still be stored as a string in the array returned by mysql_fetch_row.

down

sainthyoga2003 at gmail dot com ¶

8 years ago


Note that mysqli_fetch() is deprecated but still is in PHP function list. mysqli_fetch_row() is nowadays mysql procedural style used, but is not listed in PHP functions.

down

evangun2001 at yahoo dot fr ¶

14 years ago


Remember that fetch() and fetch_row() are two different things, and differ in the way to use them.

- fetch() is used on a statement (like an executed prepared statement) and needs to be used in association with bind_result().

- fetch_row() is used on a result (like the result of query()).

As a consequence, if you want to use to use fetch_row() with an executed prepared statement, first you'll have to get the result out of this statement with mysqli_store_result() or mysqli_use_result().

down

maillist at pnpitalia.it ¶

18 years ago


from "README.PHP4-TO-PHP5-THIN-CHANGES"

4. Be careful when porting from ext/mysql to ext/mysqli. The following
   functions return NULL when no more data is available in the result set
   (ext/mysql's functions return FALSE).

    - mysqli_fetch_row()
    - mysqli_fetch_array()
    - mysqli_fetch_assoc()

add a note

官方地址：https://www.php.net/manual/en/mysqli-result.fetch-row.php

有任何技术问题请点击这里网站运营推广招聘

IT PHP 编程语言 Linux 开发编程科技 Elasticsearch HTML/CSS/XML 网络数据库 JAVA 面试 NoSQL C/C++ Golang Git 算法操作系统正则表达式 Redis 互联网 MySql JavaScript 运维软件国际架构设计 Mac OS TCP/IP Excel Vim Windows Socket Oracle VR MongoDB Python 运营 MemCache 商业硬件电子娱乐设计 nginx 摄影游戏 WordPress HTTP 团建数码电器

php7 安装fileinfo扩展 preg_split — 通过一个正则表达式分隔字符串 php位值,解决 PHP 中 usort 在值相同时改变原始位置的问题 [PHP] inet_pton/inet_ntop IP地址转换函数 PHP 8.1 [鸟哥]PHP_INT_MIN 和 -9223372036854775808 adodb手册 ADORecordSet对象 opcache预加载 Composer的Packagist资源 array_multisort() 多字段排序 PHPMailer设置utf8 PHPMailer字符集CharSet mysql面试题 PHP json解析（json_decode）页面工具 [原创]诡异的php-fpm超时问题 php中几种注释规范纯php实现DES以及TripleDES加密算法 php 修改图片大小支持php7的性能采集扩展 PHP mkdir()写出来的权限与mode值不符合

略微加速

PHP官方手册 - 互联网笔记

mysqli_result::fetch_row

mysqli_fetch_row

说明

参数

返回值

范例

参见

User Contributed Notes 4 notes