www.gusucode.com > Piwik 网站流量统计系统 v2.9.1PHP源码程序 > Piwik 网站流量统计系统 v2.9.1/How to install Piwik.html/piwik/vendor/mnapoli/php-di/src/DI/Definition/Helper/EnvironmentVariableDefinitionHelper.php
<?php /** * PHP-DI * * @link http://php-di.org/ * @copyright Matthieu Napoli (http://mnapoli.fr/) * @license http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file) */ namespace DI\Definition\Helper; use DI\Definition\EnvironmentVariableDefinition; /** * Helps defining how to create an instance of an environment variable definition. * * @author James Harris <james.harris@icecave.com.au> */ class EnvironmentVariableDefinitionHelper implements DefinitionHelper { /** * The name of the environment variable * @var string */ private $variableName; /** * Whether or not the environment variable definition is optional * * If true and the environment variable given by $variableName has not been * defined, $defaultValue is used. * * @var boolean */ private $isOptional; /** * The default value to use if the environment variable is optional and not provided * @var mixed */ private $defaultValue; /** * @param string $variableName The name of the environment variable * @param boolean $isOptional Whether or not the environment variable definition is optional * @param mixed $defaultValue The default value to use if the environment variable is optional and not provided */ public function __construct($variableName, $isOptional, $defaultValue = null) { $this->variableName = $variableName; $this->isOptional = $isOptional; $this->defaultValue = $defaultValue; } /** * @param string $entryName Container entry name * * @return EnvironmentVariableDefinition */ public function getDefinition($entryName) { return new EnvironmentVariableDefinition($entryName, $this->variableName, $this->isOptional, $this->defaultValue); } }