PHP access database configuration general method (json) clever

The purpose is to provide dynamic acquisition and setting of database connections through universal class access to configuration files, so that flexible, simplified, and decoupled operations can be provided during development and production applications. Friends who need it can Refer to the following

Extract a common method for database configuration

The purpose is to provide dynamic acquisition and setting of database connections through common classes to access configuration files, so that development time It can provide flexible, simplified, and decoupled operation methods for production applications. For example, two sets of database access content are configured in the configuration file, one is the test library access address, and the other is the production library access. When you need to obtain the connection information, you only need to fill in the matching parameters

Structure

• Factory mode, pass parameters, return results;

• Returns array successfully, otherwise returns string error message;

• Two files work together, one is a json format configuration file, responsible for saving the database connection content, and the other is a reading class, responsible for reading and retrieval, and returning results;

Usage

• Define the configuration file as db-config.json, the content is database connection information ;

• Reading classdb-config.phpProvides public static access for upper-layer interface calls;

• Upper layer The interface uses the interface method $db_conf = DbConf::Conf("debug");Retrieve the database connection information with the debug flag. If $db_conf is in array format;

see code

{
 "debug": {
  "db_host": "",
  "db_name": "",
  "db_user": "",
  "db_password": ""
 }
}

php class

<?php
class DbConf{
 public static function Conf( $conf_name ){
  
  if(empty($conf_name)){
   die("Illegal parameter");
  }

  $from = "localhost"; // allow legal host only
  if(!isset($_SERVER[&#39;HTTP_HOST&#39;]) || $_SERVER[&#39;HTTP_HOST&#39;]!=$from){
   die("Unauthorized access");
  }

  $json_config = file_get_contents(&#39;db-config.json&#39;);

  $json_data = json_decode($json_config, true);

  if( array_key_exists($conf_name, $json_data)){
   return $json_data[$conf_name];
  }else{
   return "Not Found";
  }
 }
}

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