Table of Contents
回复讨论(解决方案)
Home Backend Development PHP Tutorial 奇怪现象,未知问题.麻烦大家看看.数据库查询类query的

奇怪现象,未知问题.麻烦大家看看.数据库查询类query的

Jun 23, 2016 pm 01:43 PM

//数据库连接<?php//$conn=mssql_connect("localhost","dabaxitong","dabaxitong","daba..") or die("数据库无法远程,请联系管理员!");//mssql_select_db("ouou") or die("做坏事?");header("Content-Type:text/html;charset=utf-8");$mysqli=new mysqli("localhost","da","da","da");//错误返回if(mysqli_connect_errno()){    printf("连接有问题 %s\n",mysqli_connect_error());    exit;}//设置编码if (!$mysqli->set_charset("utf8")) {    printf("字符集utf8加载错误: %s\n", $mysqli->error);} else {    //printf("设置当前字符集: %s\n", $mysqli->character_set_name());}$mysqli->query("set names 'utf8'");//写库$mysqli->query("set character set 'utf8'");//读库//$mysqli->close();
Copy after login

include './xitong/LianJieMySql.php';//查询 if ($row = $mysqli->query("select * from yonghu where MingZi_ShouJi = '$u'and MiMa='$p'"))    {        $r=$row->fetch_array();        print_r($r);    }else    {        echo mysql_error();    }
Copy after login


在名字和密码正确的情况.而且数据库连接也正常,他就是查询不出来.一般这种问题,找错误,可以怎么找?


回复讨论(解决方案)

更奇怪的是.在phpmyadmin里查询

select * from yonghu where mingzishouji = '134213213';
也是0条返回.这个字段是有134213213

如果直接执行 select * from yonghu 
的话,是可以print_t 的.
1但加入  where mingzishouji = '123' 就无法查询了. 该字段是有这123存在.

好了.是我见鬼了.原来是字段里的错误.

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

11 Best PHP URL Shortener Scripts (Free and Premium) 11 Best PHP URL Shortener Scripts (Free and Premium) Mar 03, 2025 am 10:49 AM

Long URLs, often cluttered with keywords and tracking parameters, can deter visitors. A URL shortening script offers a solution, creating concise links ideal for social media and other platforms. These scripts are valuable for individual websites a

Working with Flash Session Data in Laravel Working with Flash Session Data in Laravel Mar 12, 2025 pm 05:08 PM

Laravel simplifies handling temporary session data using its intuitive flash methods. This is perfect for displaying brief messages, alerts, or notifications within your application. Data persists only for the subsequent request by default: $request-

Build a React App With a Laravel Back End: Part 2, React Build a React App With a Laravel Back End: Part 2, React Mar 04, 2025 am 09:33 AM

This is the second and final part of the series on building a React application with a Laravel back-end. In the first part of the series, we created a RESTful API using Laravel for a basic product-listing application. In this tutorial, we will be dev

Simplified HTTP Response Mocking in Laravel Tests Simplified HTTP Response Mocking in Laravel Tests Mar 12, 2025 pm 05:09 PM

Laravel provides concise HTTP response simulation syntax, simplifying HTTP interaction testing. This approach significantly reduces code redundancy while making your test simulation more intuitive. The basic implementation provides a variety of response type shortcuts: use Illuminate\Support\Facades\Http; Http::fake([ 'google.com' => 'Hello World', 'github.com' => ['foo' => 'bar'], 'forge.laravel.com' =>

cURL in PHP: How to Use the PHP cURL Extension in REST APIs cURL in PHP: How to Use the PHP cURL Extension in REST APIs Mar 14, 2025 am 11:42 AM

The PHP Client URL (cURL) extension is a powerful tool for developers, enabling seamless interaction with remote servers and REST APIs. By leveraging libcurl, a well-respected multi-protocol file transfer library, PHP cURL facilitates efficient execution of various network protocols, including HTTP, HTTPS, and FTP. This extension offers granular control over HTTP requests, supports multiple concurrent operations, and provides built-in security features.

12 Best PHP Chat Scripts on CodeCanyon 12 Best PHP Chat Scripts on CodeCanyon Mar 13, 2025 pm 12:08 PM

Do you want to provide real-time, instant solutions to your customers' most pressing problems? Live chat lets you have real-time conversations with customers and resolve their problems instantly. It allows you to provide faster service to your custom

Announcement of 2025 PHP Situation Survey Announcement of 2025 PHP Situation Survey Mar 03, 2025 pm 04:20 PM

The 2025 PHP Landscape Survey investigates current PHP development trends. It explores framework usage, deployment methods, and challenges, aiming to provide insights for developers and businesses. The survey anticipates growth in modern PHP versio

Notifications in Laravel Notifications in Laravel Mar 04, 2025 am 09:22 AM

In this article, we're going to explore the notification system in the Laravel web framework. The notification system in Laravel allows you to send notifications to users over different channels. Today, we'll discuss how you can send notifications ov

See all articles