[CI代码解读] 告诉你为何libraries 方法引用命名规则需要大写


/system/core/Loader.php 文件

public function library($library, $params = NULL, $object_name = NULL) { if (empty($library)) { return $this; } elseif (is_array($library)) { foreach ($library as $key => $value) { if (is_int($key)) { $this->library($value, $params); } else { $this->library($key, $params, $value); } } return $this; } if ($params !== NULL && ! is_array($params)) { $params = NULL; } $this->_ci_load_library($library, $params, $object_name); return $this; }

libraries 这个函数写的很大众化,基本意思就是首先参数是不是空呀。~ 然后就是因为可以传字符串,也可以传数组,既可以加载一个或多个类。然后首先他得判断下是不是数组。然后就是判断下有没有传输初始化参数(既第二个参数),随后就调用了第二个方法 function _ci_load_library

$class = ucfirst($class);

// Is this a stock library? There are a few special conditions if so ...
if (file_exists(BASEPATH.'libraries/'.$subdir.$class.'.php'))
   return $this->_ci_load_stock_library($class, $subdir, $params, $object_name);

第二个方法主要看这段代码,ucfirst 文件名大写就是在这里设置的。所以你的文件首字母必须大写。否则就报错喽。
最后就是 function _ci_load_stock_library 函数

if (file_exists($path = $path.'libraries/'.$file_path.$library_name.'.php'))
   // Override

首先在第二个方法 _ci_load_stock_library 传入的一个参数 $class. _ci_load_stock_library方法接收后会直接引用你自定义的这个类。

libraries 引用自定义类就是这个样子的了。

所以说你可以 SmsClass 也可以 Smsclass 或者 SMSCLASS ,但就是不能 smsClass,个人感觉小驼峰好看,大驼峰不好看。


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