在 PHP 中的类中包含文件
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Include a file in a class in PHP
提问by Jerodev
Is it possible to include a file with PHP variables inside a class? And what would be the best way so I can access the data inside the whole class?
是否可以在类中包含带有 PHP 变量的文件？什么是最好的方法，以便我可以访问整个班级内的数据？
I have been googling this for a while, but none of the examples worked.
我已经在谷歌上搜索了一段时间，但没有一个例子有效。
回答by Mihai Iorga
The best way is to load them, not to include them via an external file.
最好的方法是加载它们，而不是通过外部文件包含它们。
For example:
例如：
// config.php
$variableSet = array();
$variableSet['setting'] = 'value';
$variableSet['setting2'] = 'value2';
// Load config.php ...
include('config.php');
$myClass = new PHPClass($variableSet);
// In a class you can make a constructor
function __construct($variables){ // <- As this is autoloading, see http://php.net/__construct
$this->vars = $variables;
}
// And you can access them in the class via $this->vars array
回答by Ernestas Stankevi?ius
Actually, you should append data to the variable.
实际上，您应该将数据附加到变量中。
<?php
/*
file.php
$hello = array(
'world'
)
*/
class SomeClass {
var bla = array();
function getData() {
include('file.php');
$this->bla = $hello;
}
function bye() {
echo $this->bla[0]; // Will print 'world'
}
}
?>
回答by Eugene Manuilov
From a performance point of view, it would be better if you will use a .ini file to store your settings.
从性能的角度来看，最好使用 .ini 文件来存储您的设置。
[db]
dns = 'mysql:host=localhost.....'
user = 'username'
password = 'password'
[my-other-settings]
key1 = value1
key2 = 'some other value'
And then in your class you can do something like this:
然后在你的课堂上你可以做这样的事情：
class myClass {
private static $_settings = false;
// This function will return a setting's value if setting exists,
// otherwise default value also this function will load your
// configuration file only once, when you try to get first value.
public static function get($section, $key, $default = null) {
if (self::$_settings === false) {
self::$_settings = parse_ini_file('myconfig.ini', true);
}
foreach (self::$_settings[$group] as $_key => $_value) {
if ($_key == $Key)
return $_value;
}
return $default;
}
public function foo() {
$dns = self::get('db', 'dns'); // Returns DNS setting from db
// section of your configuration file
}
}
