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1. Common naming patterns in programming

   Name	Description
   Accumulator	Classes that accumulate or collect data over time, e.g., SumAccumulator, ErrorAccumulator.
   Adapter	Classes that adapt or convert interfaces or data between two systems, e.g. DatabaseAdapter, APIAdapter.
   Aggregator	Classes that aggregate or collect data from multiple sources, e.g., NewsAggregator, DataAggregator.
   Allocator	Classes that allocate or assign resources, e.g., MemoryAllocator, TaskAllocator.

2. Environment Variable Processors

   Environment Variable Processors

   # config/packages/framework.yaml
   
   parameters:
       env(TRUSTED_HOSTS): "10.0.0.1,10.0.0.2"
   framework:
      trusted_hosts: '%env(csv:TRUSTED_HOSTS)%'
   

   From now, you don’t need to use explode 💥

   Source: https://symfony.com/doc/4.4/configuration/env_var_processors.html

3. Useful PHP functions

   checkdnsrr()

   With this function you can check the DNS records for an IP or hostname that you can pass to the function as a param. A really good use case is to check if the domain of a given email address exists.

   <?php
   
   function validateMail(string $email): bool
   {
       $parts = explode("@", $email);
       $host = end($parts);
       return checkdnsrr($host, 'MX');
   }
   
   $email = '[email protected]';
   
   validateMail($email);
   

   This helps you to avoid bounce emails trying to create an account on your website or platform.