本文实例讲述了PHP读取配置文件类实例。分享给大家供大家参考。具体如下:
PHP;">
_settings;
foreach ( $var as $key ) {
if (! isset ( $result [$key] )) {
return false;
}
$result = $result [$key];
}
return $result;
}
function load() {
trigger_error ( 'Not yet implemented',E_USER_ERROR );
}
}
class Settings_PHP extends Settings {
function load($file) {
if (file_exists ( $file ) == false) {
return false;
}
// Include file
include ($file);
unset ( $file );
// Get declared variables
$vars = get_defined_vars ();
// Add to settings array
foreach ( $vars as $key => $val ) {
if ($key == 'this')
continue;
$this->_settings [$key] = $val;
}
}
}
class Settings_INI extends Settings {
function load($file) {
if (file_exists ( $file ) == false) {
return false;
}
$this->_settings = parse_ini_file ( $file,true );
}
}
class Settings_YAML extends Settings {
function load($file) {
if (file_exists ( $file ) == false) {
return false;
}
include ('spyc.PHP');
$this->_settings = Spyc::YAMLLoad ( $file );
}
}
class Settings_XML extends Settings {
function load($file) {
if (file_exists ( $file ) == false) {
return false;
}
include ('xmllib.PHP');
$xml = file_get_contents ( $file );
$data = XML_unserialize ( $xml );
$this->_settings = $data ['settings'];
}
}
?>
PHP;">
/**
* 针对PHP的配置,如有配置文件
*config.PHP
//具体调用:
include ('settings.PHP'); //原始环境假设每个类为单独的一个类名.PHP文件
// Load settings (PHP)
$settings = new Settings_PHP;
$settings->load('config.PHP');
echo 'PHP: ' . $settings->get('db.host') . '';
*
*/
读取INI文件,主要用到parser_ini_file函数,该函数返回一个数组,如第二个参数为true时则返回多维数组
/**
* ini例子:config.ini
*
[db]
name = test
host = localhost
//调用例子:
$settings = new Settings_INI;
$settings->load('config.ini');
echo 'INI: ' . $settings->get('db.host') . '';
*/
读取XML文件,需要用到XML_PARSER,xmllib.PHP
/**
* XML例子:config.xml
test
localhost
// Load settings (XML)
$settings = New Settings_XML;
$settings->load('config.xml');
echo 'XML: ' . $settings->get('db.host') . '';
*
*/
读取YAML格式文件,使用YAML必须使用到SPYC这个库**
YAML配置例子:config.yaml
db:
name: test
host: localhost
// Load settings (YAML)
$settings = New Settings_YAML;
$settings->load('config.yaml');
echo 'YAML: ' . $settings->get('db.host') . '';
*/
1. ini有点过时?? 2. xml比较好, 3. yaml很好,但是毕竟没有标准化。 4. txt要自己组织格式,开放性不好。 5. 类序列化。比较好,但是不熟悉的人使用比较麻烦! 6. PHP定义常量(你不用修改数据吗?)
所以:xml最好。
希望本文所述对大家的PHP程序设计有所帮助。
原文链接:https://www.f2er.com/php/21419.html