本文实例讲述了CI配置多数据库访问的方法。分享给大家供大家参考,具体如下:
1、修改datebase.php文件,将:
$db['XXX']['pconnect'] = TRUE;
修改成:
$db['XXX']['pconnect'] = FALSE;
2、将原来的数据库链接定义复制一份,如当前
$db['bbs']['hostname'] = '你的数据库IP地址'; $db['bbs']['username'] = '链接用户名'; $db['bbs']['password'] = '数据库连接密码'; $db['bbs']['database'] = '数据库名'; $db['bbs']['dbdriver'] = 'mysql'; $db['bbs']['dbprefix'] = 'cg_'; $db['bbs']['pconnect'] = FALSE; $db['bbs']['db_debug'] = TRUE; $db['bbs']['cache_on'] = FALSE; $db['bbs']['cachedir'] = ''; $db['bbs']['char_set'] = 'utf8'; $db['bbs']['dbcollat'] = 'utf8_general_ci'; $db['bbs']['swap_pre'] = ''; $db['bbs']['autoinit'] = TRUE; $db['bbs']['stricton'] = FALSE;
其他的都不需要修改,然后在你的控制器里面加载 构造函数:
function __construct() { parent::__construct(); $this->XXX= $this->load->database('XXX', TRUE); //注意,这里的XXX代表上面的bbs,修改成bbs就行了 }
使用方式:
$query = $this->bbs->query($sql); //和以前一样,就是这里用到了$this->XXX-> XXX就是你定义的bbs $rs = $query->result();
更多关于CodeIgniter相关内容感兴趣的读者可查看本站专题:《codeigniter入门教程》、《CI(CodeIgniter)框架进阶教程》、《php日期与时间用法总结》、《php面向对象程序设计入门教程》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》
希望本文所述对大家基于CodeIgniter框架的PHP程序设计有所帮助。

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 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 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 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.

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 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.

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

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.


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