Understanding and application of PHP chain operations

This article mainly shares with you the understanding and application of part of the code for chain operations in PHP. Friends in need can refer to

PHP chain operations: similar to the following implementation$ db->where()->limit()->order(); The code format when not using chain calls is as follows:

<?php  
namespace Database;  
  
class Database  
{  
    public function where($where)  
    {  
        return $this;  
    }  
    public function order($order)  
    {  
        return $this;  
    }  
    public function limit($limit)  
    {  
        return $this;  
    }  
      
}

The code call is as follows:

<pre name="code" class="php">//代码调用  
$db = new Database\Database();  
$db->where(&#39;...&#39;)->order(&#39;...&#39;)->limit(&#39;...&#39;);

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There are several ways to implement chain operations in PHP                                        

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