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Home Backend Development PHP Tutorial php框架不用写sql语句就能调用数据库里表的字段是怎么实现的

php框架不用写sql语句就能调用数据库里表的字段是怎么实现的

Jun 23, 2016 pm 01:47 PM

据说很多框架不用写sql语句,仅凭封装就能调用数据表的字段,这个是怎么实现的,不可思议啊,因为传统的教程都说,不通过sql语句无法操作数据库啊,这到底是怎么 回事

拒绝那种发百度里的文章的帖子。要有自己的看法


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这个很好实现
写个php类   把数据库操作语句写到这个类里

然后传参调用,不知我说明白没有

类里面的各个函数代表不同的操作。

把最基础的操作拆开封装成类后直接OOP调用即可。

把最基础的操作拆开封装成类后直接OOP调用即可。


能举一个例子吗,比如select 这一数据库查询语句的功能,如何封装呢,简单写写意思就行,我不想了解细节,只想了解大概!

大多 php 框架都在一定程度上模拟了 ORM (对象关系映射,一种概念性的、易于理解的模型化数据的方法)的实现,但最终是翻译成 sql 指令执行的

大多 php 框架都在一定程度上模拟了 ORM (对象关系映射,一种概念性的、易于理解的模型化数据的方法)的实现,但最终是翻译成 sql 指令执行的


这么 说最终还是要靠sql语句执行命令吗?能写一个翻译的句子看一下吗,简单点,只是稍微了解一下。

当然了,框架中的方法也是封装好的。归根结底,也是要执行SQL的。

function select($table,$field_array){    $field = implode(',', $field_array);    $r = mysql_query("select $field from $table");     return $r;}
Copy after login

上面是一个简单的例子,完美的写法应该写成类,具体可以网上找下例子。

楼上取的例子好漂亮啊

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