mysqli::get_warnings

mysqli_get_warnings

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

mysqli::get_warnings -- mysqli_get_warnings — Get result of SHOW WARNINGS

说明

面向对象风格

public mysqli::get_warnings(): mysqli_warning|false

过程化风格

mysqli_get_warnings(mysqli $mysql): mysqli_warning|false

警告

本函数还未编写文档，仅有参数列表。

add a note

User Contributed Notes 3 notes

down

marcus at synchromedia dot co dot uk ¶

12 years ago


With a bit of rooting about with reflection, I spotted that the mysqli_warning class has a next() function, so I tried calling it and it does indeed progress through the available warnings! Following on from my earlier example:


<?php

$r = mysqli_query($db, "INSERT INTO blah SET z = '1'");

$j = mysqli_warning_count($db);

if ($j > 0) {

    $e = mysqli_get_warnings($db);

    for ($i = 0; $i < $j; $i++) {

        var_dump($e);

        $e->next();

    }

}

?>



There is a simple way of traversing the warnings:


<?php

$r = mysqli_query($db, "INSERT INTO blah SET z = '1'");

if (mysqli_warning_count($db)) {

   $e = mysqli_get_warnings($db);

   do {

       echo "Warning: $e->errno: $e->message\n";

   } while ($e->next());

}

?>

down

Anonymous ¶

8 years ago


Take note:
Calling this function will change the output of mysqli_affected_rows if any warnings are returned. So if you're using mysqli_affected_rows in your application, make sure to call it before calling mysqli_get_warnings.

down

marcus at synchromedia dot co dot uk ¶

12 years ago


I'm not sure how useful this function is as implemented. Take this example:

CREATE TABLE `blah` (
  `x` varchar(100) NOT NULL,
  `y` varchar(100) NOT NULL,
  `z` varchar(100) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

INSERT INTO blah SET z = '1';
Query OK, 1 row affected, 2 warnings (0.00 sec)

mysql> show warnings;
+---------+------+----------------------------------------+
| Level   | Code | Message                                |
+---------+------+----------------------------------------+
| Warning | 1364 | Field 'x' doesn't have a default value | 
| Warning | 1364 | Field 'y' doesn't have a default value | 
+---------+------+----------------------------------------+

Doing the same from PHP using mysqli_get_warnings(), you get this instead:

object(mysqli_warning)#4 (3) {
  ["message"]=>
  string(38) "Field 'x' doesn't have a default value"
  ["sqlstate"]=>
  string(5) "HY000"
  ["errno"]=>
  int(1364)
}

i.e. it only returns the first warning. I suspect it should return an array of these objects rather than just one. At least you know what the return value looks like now, since the docs don't say!

add a note

官方地址：https://www.php.net/manual/en/mysqli.get-warnings.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 [鸟哥]PHP_INT_MIN 和 -9223372036854775808 PHP 8.1 ADORecordSet对象 adodb手册 opcache预加载 Composer的Packagist资源 array_multisort() 多字段排序 mysql面试题 PHPMailer设置utf8 PHPMailer字符集CharSet PHP json解析（json_decode）页面工具 php中几种注释规范 [原创]诡异的php-fpm超时问题 PHP获取指定函数定义在哪个文件中及行号 php上周一、本周一、下周一日期 [鸟哥]PHP FFI详解 - 一种全新的PHP扩展方式 php扩展开发

略微加速

PHP官方手册 - 互联网笔记

mysqli::get_warnings

mysqli_get_warnings

说明

User Contributed Notes 3 notes