$config = parse_ini_file('config.ini'); // load existing configuration settings
$config['DB_HOST'] = 'localhost'; // add or update 'DB_HOST' setting
$config['DB_USER'] = 'myuser'; // add or update 'DB_USER' setting
$config['DB_PASS'] = 'mypassword'; // add or update 'DB_PASS' setting
$config_str = ""; // create empty string to store new configuration file contents
// loop through configuration settings and add them to $config_str
foreach($config as $key => $value){
$config_str .= "$key=$value\n";
}
file_put_contents('config.ini', $config_str); // save configuration file
This example adds three database settings to an existing configuration file (`config.ini`): DB_HOST, DB_USER, and DB_PASS. It does this by first loading the existing configuration file using the `parse_ini_file` function, and then updating the relevant configuration settings using array notation. Finally, the new configuration settings are saved to the configuration file using the `file_put_contents` function.
In terms of package libraries, this example does not require any external libraries as it uses built-in PHP functions. However, there are many PHP libraries that provide more powerful and flexible configuration management capabilities, such as the popular Symfony Config component.<?php
//defaule setting
$log = array('Logging' => array('save_path' => 'F:\\tmp', 'default_wirte_level' => Logging::LEVEL_INFO, 'level' => Logging::LEVEL_INFO, 'filename_prefix' => 'mytest', 'sys_id' => 'test_1', 'write_local' => TRUE, 'write_zmq' => FALSE));
Config::add($log);
Config::Add(array('DefaultMemcacheServers' => 'xxxx:xxxx,xxxx:xxx', 'zmqAPI' => array('Server' => array())));
