本文实例讲述了Zend Framework教程之Application用法。分享给大家供大家参考，具体如下：
Zend_Application是Zend Framework的核心组件。Zend_Application为Zend Framework应用程序提供基本功能，是程序的入口点。它的主要功能有两个：装载配置PHP环境（包括自动加载），并引导应用程序。
通常情况下，通过配置选项配置Zend_Application构造器，但也可以完全使用自定义方法配置。以下是两个使用用例。
Zend_Application配置选项
构造函数：
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/** * Constructor * * Initialize application. Potentially initializes include_paths, PHP * settings, and bootstrap class. * * @param string $environment * @param string|array|Zend_Config $options String path to configuration file, or array/Zend_Config of configuration options * @throws Zend_Application_Exception When invalid options are provided * @return void */public function __construct($environment, $options = null){ $this->_environment = (string) $environment; require_once 'Zend/Loader/Autoloader.php'; $this->_autoloader = Zend_Loader_Autoloader::getInstance(); if (null !== $options) { if (is_string($options)) { $options = $this->_loadConfig($options); } elseif ($options instanceof Zend_Config) { $options = $options->toArray(); } elseif (!is_array($options)) { throw new Zend_Application_Exception('Invalid options provided; must be location of config file, a config object, or an array'); } $this->setOptions($options); }} |
Zend_Application配置方法
1.使用配置文件
2.使用配置数组
常见配置选项
| Option | Description |
|---|---|
| phpSettings |
用于配置php.ini选项，要求是数组，数组的键应该是选项的的key. |
| includePaths |
把附加的路径加入到include_path，要求是数组 |
| autoloaderNamespaces |
给Zend_Loader_Autoloader注册附加命名空间，为数组 |
| bootstrap |
可以是设置bootstrap引导类的路径的字符串，也可以是数组，数组元素要求为 'path' 和 'class' |
注意：
选项名称不区分大小写。
Zend_Application的方法
| Method | Return Value | Parameters | Description |
|---|---|---|---|
|
__construct( $environment, $options = null) |
Void |
|
构造函数。 用于初始化配置对象。 实例化Zend_Loader_Autoloader。 通过传递给构造函数选项然后传递给setOptions（）方法。 |
| getEnvironment() | String | N/A |
获取环境配置 |
| getAutoloader() | Zend_Loader_Autoloader | N/A |
获取Zend_Loader_Autoloader实例 |
| setOptions(array $options) | Zend_Application |
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所有选项都存储在引用内部，并多次调用该方法来合并选项。 会根据选项生产对于的setter方法。 例如，选项“phpSettings”对应setPhpSettings()。 （选项名称不区分大小写。） |
| getOptions() | Array | N/A |
|
| hasOption($key) | Boolean |
|
key不区分大小写。 |
| getOption($key) | Mixed |
|
key不区分大小写。如果不存在返回 NULL |
| setPhpSettings(array $settings, $prefix = '') | Zend_Application |
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| setAutoloaderNamespaces(array $namespaces) | Zend_Application |
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| setBootstrap($path, $class = null) | Zend_Application |
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| getBootstrap() | NULL |Zend_Application_Bootstrap_Bootstrapper | N/A |
获取注册的bootstrap实例. |
| bootstrap() | Void | N/A |
调用 bootstrap的bootstrap() 引导应用. |
| run() | Void | N/A |
调用bootstrap的 run()运行应用 |
配置举例：
默认：
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// Create application, bootstrap, and run$application = new Zend_Application( APPLICATION_ENV, APPLICATION_PATH . '/configs/application.ini');$application->bootstrap() ->run(); |
源代码
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<?phpclass Zend_Application{ /** * Constructor * * Initialize application. Potentially initializes include_paths, PHP * settings, and bootstrap class. * * @param string $environment * @param string|array|Zend_Config $options String path to configuration file, or array/Zend_Config of configuration options * @throws Zend_Application_Exception When invalid options are provided * @return void */ public function __construct($environment, $options = null) { $this->_environment = (string) $environment; require_once 'Zend/Loader/Autoloader.php'; $this->_autoloader = Zend_Loader_Autoloader::getInstance(); if (null !== $options) { if (is_string($options)) { $options = $this->_loadConfig($options); } elseif ($options instanceof Zend_Config) { $options = $options->toArray(); } elseif (!is_array($options)) { throw new Zend_Application_Exception('Invalid options provided; must be location of config file, a config object, or an array'); } $this->setOptions($options); } } /** * Retrieve current environment * * @return string */ public function getEnvironment() { return $this->_environment; } /** * Retrieve autoloader instance * * @return Zend_Loader_Autoloader */ public function getAutoloader() { return $this->_autoloader; } /** * Set application options * * @param array $options * @throws Zend_Application_Exception When no bootstrap path is provided * @throws Zend_Application_Exception When invalid bootstrap information are provided * @return Zend_Application */ public function setOptions(array $options) { if (!empty($options['config'])) { if (is_array($options['config'])) { $_options = array(); foreach ($options['config'] as $tmp) { $_options = $this->mergeOptions($_options, $this->_loadConfig($tmp)); } $options = $this->mergeOptions($_options, $options); } else { $options = $this->mergeOptions($this->_loadConfig($options['config']), $options); } } $this->_options = $options; $options = array_change_key_case($options, CASE_LOWER); $this->_optionKeys = array_keys($options); if (!empty($options['phpsettings'])) { $this->setPhpSettings($options['phpsettings']); } if (!empty($options['includepaths'])) { $this->setIncludePaths($options['includepaths']); } if (!empty($options['autoloadernamespaces'])) { $this->setAutoloaderNamespaces($options['autoloadernamespaces']); } if (!empty($options['autoloaderzfpath'])) { $autoloader = $this->getAutoloader(); if (method_exists($autoloader, 'setZfPath')) { $zfPath = $options['autoloaderzfpath']; $zfVersion = !empty($options['autoloaderzfversion']) ? $options['autoloaderzfversion'] : 'latest'; $autoloader->setZfPath($zfPath, $zfVersion); } } if (!empty($options['bootstrap'])) { $bootstrap = $options['bootstrap']; if (is_string($bootstrap)) { $this->setBootstrap($bootstrap); } elseif (is_array($bootstrap)) { if (empty($bootstrap['path'])) { throw new Zend_Application_Exception('No bootstrap path provided'); } $path = $bootstrap['path']; $class = null; if (!empty($bootstrap['class'])) { $class = $bootstrap['class']; } $this->setBootstrap($path, $class); } else { throw new Zend_Application_Exception('Invalid bootstrap information provided'); } } return $this; } /** * Retrieve application options (for caching) * * @return array */ public function getOptions() { return $this->_options; } /** * Is an option present? * * @param string $key * @return bool */ public function hasOption($key) { return in_array(strtolower($key), $this->_optionKeys); } /** * Retrieve a single option * * @param string $key * @return mixed */ public function getOption($key) { } /** * Merge options recursively * * @param array $array1 * @param mixed $array2 * @return array */ public function mergeOptions(array $array1, $array2 = null) { if (is_array($array2)) { foreach ($array2 as $key => $val) { if (is_array($array2[$key])) { $array1[$key] = (array_key_exists($key, $array1) && is_array($array1[$key])) ? $this->mergeOptions($array1[$key], $array2[$key]) : $array2[$key]; } else { $array1[$key] = $val; } } } return $array1; } /** * Set PHP configuration settings * * @param array $settings * @param string $prefix Key prefix to prepend to array values (used to map . separated INI values) * @return Zend_Application */ public function setPhpSettings(array $settings, $prefix = '') { foreach ($settings as $key => $value) { $key = empty($prefix) ? $key : $prefix . $key; if (is_scalar($value)) { ini_set($key, $value); } elseif (is_array($value)) { $this->setPhpSettings($value, $key . '.'); } } return $this; } /** * Set include path * * @param array $paths * @return Zend_Application */ public function setIncludePaths(array $paths) { $path = implode(PATH_SEPARATOR, $paths); set_include_path($path . PATH_SEPARATOR . get_include_path()); return $this; } /** * Set autoloader namespaces * * @param array $namespaces * @return Zend_Application */ public function setAutoloaderNamespaces(array $namespaces) { $autoloader = $this->getAutoloader(); foreach ($namespaces as $namespace) { $autoloader->registerNamespace($namespace); } return $this; } /** * Set bootstrap path/class * * @param string $path * @param string $class * @return Zend_Application */ public function setBootstrap($path, $class = null) { // setOptions() can potentially send a null value; specify default // here if (null === $class) { $class = 'Bootstrap'; } if (!class_exists($class, false)) { require_once $path; if (!class_exists($class, false)) { throw new Zend_Application_Exception('Bootstrap class not found'); } } $this->_bootstrap = new $class($this); if (!$this->_bootstrap instanceof Zend_Application_Bootstrap_Bootstrapper) { throw new Zend_Application_Exception('Bootstrap class does not implement Zend_Application_Bootstrap_Bootstrapper'); } return $this; } /** * Get bootstrap object * * @return Zend_Application_Bootstrap_BootstrapAbstract */ public function getBootstrap() { if (null === $this->_bootstrap) { $this->_bootstrap = new Zend_Application_Bootstrap_Bootstrap($this); } return $this->_bootstrap; } /** * Bootstrap application * * @param null|string|array $resource * @return Zend_Application */ public function bootstrap($resource = null) { $this->getBootstrap()->bootstrap($resource); return $this; } /** * Run the application * * @return void */ public function run() { $this->getBootstrap()->run(); } /** * Load configuration file of options * * @param string $file * @throws Zend_Application_Exception When invalid configuration file is provided * @return array */ protected function _loadConfig($file) { $environment = $this->getEnvironment(); $suffix = pathinfo($file, PATHINFO_EXTENSION); $suffix = ($suffix === 'dist') ? pathinfo(basename($file, ".$suffix"), PATHINFO_EXTENSION) : $suffix; switch (strtolower($suffix)) { case 'ini': $config = new Zend_Config_Ini($file, $environment); break; case 'xml': $config = new Zend_Config_Xml($file, $environment); break; case 'json': $config = new Zend_Config_Json($file, $environment); break; case 'yaml': case 'yml': $config = new Zend_Config_Yaml($file, $environment); break; case 'php': case 'inc': $config = include $file; if (!is_array($config)) { throw new Zend_Application_Exception('Invalid configuration file provided; PHP file does not return array value'); } return $config; break; default: throw new Zend_Application_Exception('Invalid configuration file provided; unknown config type'); } return $config->toArray(); }} |
希望本文所述对大家PHP程序设计有所帮助。
