search
HomeBackend DevelopmentPHP Tutorialphp链接mysql问题,求各位大大解答

能够打印出php的配置信息,apache也能正常启动,mysql也能登录进去,为啥在编写一个测试php链接数据库就死活连接不上,本人新手,求各位高手们解答:测试代码:

 
$host='localhost';
$user_name='root';
$password='123456';
$conn=mysql_connect($host,$user_name,$password);
if (!$conn)
{
die('数据库连接失败');
}
echo '数据库连接成功!';

if (mysql_close($conn))
{
echo '
...
';
echo '到数据库的连接已经成功关闭';
}
?>


运行错误提示:Fatal error: Call to undefined function mysql_connect() in E:\Tools\httpd-2.2.19-win64\httpd-2.2-x64\htdocs\index.html on line 7
可是用户名跟密码我明明没错,也能登录是爱没办法了!

测试php配置信息代码:
     phpinfo();
?>
这个能输出php佩斯信息;
弄了好几个小时了,还是没辙求大大们。


回复讨论(解决方案)

没人吗?在线等啊 ,我就这样一直等到天亮

phpinfo中,没有mysql, 打开php.ini配置文件,把extension=php_mysql.dll 前面的分号去掉,保存,重启Apache 就可以了。

没人吗?在线等啊 ,我就这样一直等到天亮
解决否???

 extension=php_mysql.dll
 extension=php_mysqli.dll
 extension=php_oci8.dll
 extension=php_openssl.dll
都做了,这些。

还有我发现我运行php.exe时候提示无法启动,计算机中丢失OCI.dll,什么意思?

数据库名呢?

不用填数据库名都可以吧,$con = mysql_connect("localhost","mysql_user","mysql_pwd");
w3c的一个例子。

对了,我发现一个问题,我现在换成WampServer这个集成的来用来,把测试文件用WampServer来测试还是不可以链接,于是我把密码设置为空,就链接成功了,我点击Mysql控制台的时候会提示我输入密码,这就证明我是有设置密码的,而且我在安装mysql的时候设置了密码的,我就纳闷了,我现在退出了WampServer,同样的代码在WampServer下能连接成功在改用apache+mysql+php搭建的来连接就不成功,密码有或空哦都链接不成功,头都大了,我都配置了2遍了,挨着挨着的看到,唉................

undefined function mysql_connect
很明显 php_mysql 没有加载或加载失败

请注释掉 extension=php_oci8.dll
既然你不用 oracle, 为何要打开它?如果你确实需要使用 oracle,那么你如何不知道要安装 oracle 客户端呢?

不要在两个集成环境中验证 mysql 的工作情况。在集成环境中,mysql 是隶属于集成环境的,并不作为单独的服务存在
这就是说,在一个集成环境中能使用mysql,而在另一个中不能,是极其正常的事情

php_mysql 需要 php 安装目录中的mysql支撑库,所以你需要将php安装目录置于操作系统的搜索路径中
绿色的做法是在 httpd.conf 加入 LoadFile "php安装路径/php5ts.dll"
由 php5ts.dll 去找

 这个LoadFile "php安装路径/php5ts.dll"放在httpd.conf的那个位置能具体点吗?第一次配置这东西,很多都不懂,嘿嘿。


 
$conn=mysql_connect('127.0.0.1','root','123456');
if (!$conn)
{
die('数据库连接失败'. mysql_error());
}
echo '数据库连接成功!';

if(mysql_close($conn))
{
echo '到数据库的连接已经成功关闭';
}
?>



Fatal error: Call to undefined function mysql_connect() in E:\Tools\httpd-2.2.19-win64\httpd-2.2-x64\htdocs\testmysql.html on line 4

你确认mysql扩展在phpinfo()中看到了吗

在httpd.conf文件里在LoadModule php5_module "c:/php/php5apache2_2.dll"下面追加如下语句即可:
PHPIniDir "c:/php"

LoadModule php5_module "E:/Tools/PHP/php-5.2.5 (x64)/php5apache2_2.dll"
PHPIniDir "E:\Tools\PHP"
这是我的

Statement
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
The Continued Use of PHP: Reasons for Its EnduranceThe Continued Use of PHP: Reasons for Its EnduranceApr 19, 2025 am 12:23 AM

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python: Exploring Their Similarities and DifferencesPHP and Python: Exploring Their Similarities and DifferencesApr 19, 2025 am 12:21 AM

PHP and Python are both high-level programming languages ​​that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP and Python: Different Paradigms ExplainedPHP and Python: Different Paradigms ExplainedApr 18, 2025 am 12:26 AM

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP and Python: A Deep Dive into Their HistoryPHP and Python: A Deep Dive into Their HistoryApr 18, 2025 am 12:25 AM

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

Choosing Between PHP and Python: A GuideChoosing Between PHP and Python: A GuideApr 18, 2025 am 12:24 AM

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP and Frameworks: Modernizing the LanguagePHP and Frameworks: Modernizing the LanguageApr 18, 2025 am 12:14 AM

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHP's Impact: Web Development and BeyondPHP's Impact: Web Development and BeyondApr 18, 2025 am 12:10 AM

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

How does PHP type hinting work, including scalar types, return types, union types, and nullable types?How does PHP type hinting work, including scalar types, return types, union types, and nullable types?Apr 17, 2025 am 12:25 AM

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values ​​and handle functions that may return null values.

See all articles

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

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

WebStorm Mac version

WebStorm Mac version

Useful JavaScript development tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software