Getting Started with PHP design mode-Registry mode

The application scenario for this pattern is not too good to summarize, but based on previous experience, the registry class often stores objects that need to be used elsewhere, such as Redis, memcache, and configuration information config, which acts like a global variable. The actual implementation is very simple, as shown in the following code:

 
 containers[$key] = $value;
     }

     Public function Get ($key) {return
          isset ($this->containers[$key])? $this->containers[$key]: null;
     }

$registry = Registry::getinstance ();
$registry->set (' key1 ', ' hello ');	Only for testing purposes, the data stored in the registry are usually object
var_dump ($registry->get (' Key1 '));
Var_dump ($registry->get (' Key2 '));