Usage analysis of dynamic configuration of thinkPHP framework

This article mainly introduces the use of dynamic configuration of the thinkPHP framework, and analyzes the dynamic configuration operation skills before thinkPHP3.0 and the precautions for cache-related operations in the form of examples. Friends in need can refer to the examples of this article

Describes the use of dynamic configuration of thinkPHP framework. Share it with everyone for your reference, the details are as follows:

When I use @ThinkPHP to build a system recently, I need to use a function that dynamically saves the system configuration parameters into a Config file. In the past, when we were building a system, the project configuration parameters would be directly written into the Config/Config.php file in advance, and then applied in the project. However, for some projects, users need to dynamically set configuration parameters through the background according to their own circumstances. Generally, we have two ways to configure this kind of dynamic parameters, one is to write to the database, and the other is to write to the configuration file. Today, I will talk about how to implement this function in the form of configuration files.

1. Configuration file setting

First, we create a new configuration file under the TP project configuration directory Config and name it setting .config.php, this file is used to save dynamic parameters. Then, merge setting.config.php into the main project configuration file Config.php by merging arrays. In this way, the configuration parameters in setting.config.php can be called throughout the entire project.

2. Implement dynamic management parameters

In the background, create a function that will setting.config.php The default value is read out and displayed in a form. This can be implemented using TP's C function. Then, you can set the value of each parameter in the form. After the form is submitted and saved, the value submitted by the form is processed. The specific code is as follows:

The structure of the setting.config.php file

<?php
return array(
  &#39;setting&#39;=>array(
    &#39;tel&#39; => &#39;400-088-7380&#39;,
        &#39;qq&#39;  => &#39;88888888&#39;,
        ......
    ),
);
?>

Operation to save configuration parameters

function SaveSetting(){
//setting.config.php文件的路径，通过settingfile_path来设定；
$setfile='./Home'.C('settingfile_path');
$a=C('setting'); //将默认配置参数的内容赋值给$a;
$b=array(
  'tel' => $_POST['tel'],
  'web' => $_POST['web'],
  ........
);
//这里将新的参数值，通过后台的表单提交过来；
$c=array_merge($a,$b) ;

Merge arrays $a and $b; we know that the array_merge() function can be merged Two arrays, and if the array elements have the same key name, the later value will overwrite the previous value (except the numeric key name);

Then, after traversing the values ​​of the merged array $c, Generate php file code;

$settingstr="<?php \n return array(\n&#39;Setting&#39; =>array(\n";
foreach($c as $key=>$v){
  $settingstr.= "\t&#39;".$key."&#39;=>&#39;".$v."&#39;,\n";
}
$settingstr.="),\n);\n?>\n";
file_put_contents($setfile,$settingstr); //通过file_put_contents保存setting.config.php文件；

At this point, the values ​​of the configuration parameters of the setting.config.php file have been updated;

It is true that the file written is an array, but you can refer to the var_export function. There is no need to loop the array!

$settingstr="<?php \n return array(\n&#39;Setting&#39; =>array(\n";
 foreach($c as $key=>$v){
  $settingstr.= "\t&#39;".$key."&#39;=>&#39;".$v."&#39;,\n";
 }
$settingstr.="),\n);\n?>\n";
file_put_contents($setfile,$settingstr); //通过file_put_contents保存setting.config.php文件;

The above code can be modified to:

$settingstr = "<?php \n return array(\n&#39;Setting&#39; =>\n".var_export($c,true)." \n ?>";
file_put_contents($setfile,$settingstr); //通过file_put_contents保存

(Thinkphp3. Version 1 already supports C functions to save set parameter values, so this method is suitable for TP versions 3.0 and below)

In addition, we know thatTP is run for the first time All configuration files, configuration parameters, etc. of the project will be generated into a runtime cache file. If we update the content of congfig, the cache file in the project must be deleted before it can take effect. For this reason, we let the system clear the cache and update parameters by itself. The code is as follows:

//RUNTIME_FILE常量是入口文件中配置的runtimefile的路径及文件名；
if(file_exists(RUNTIME_FILE)){
  unlink(RUNTIME_FILE); //删除RUNTIME_FILE;
}

Deleting the runtime_file is not enough, you need to clear the files in the Cache folder; the code is as follows:

$cachedir=RUNTIME_PATH."/Cache/";  //Cache文件的路径；
if ($dh = opendir($cachedir)) {   //打开Cache文件夹；
  while (($file = readdir($dh)) !== false) {  //遍历Cache目录，
       unlink($cachedir.$file);        //删除遍历到的每一个文件；
  }
  closedir($dh);
}

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