在用Zend Studio13.5建立Zend Framework 2.4.9時遇到的問題以及解決方案：
出現的錯誤：
Fatal error: Uncaught exception ‘RuntimeException’ with message ‘Unable to load ZF2. Run
php composer.phar install
or define a ZF2_PATH environment variable.’ in D:\wampserver\wamp\www\Zend\init_autoloader.php on line 54
RuntimeException: Unable to load ZF2. Run
php composer.phar install
or define a ZF2_PATH environment variable. in D:\wampserver\wamp\www\Zend\init_autoloader.php on line 54
意思就是找不到ZF2這個架構，看一下 init_autoloader.php
init_autoloader.php
<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/ZendSkeletonApplication for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/**
* This autoloading setup is really more complicated than it needs to be for most
* applications. The added complexity is simply to reduce the time it takes for
* new developers to be productive with a fresh skeleton. It allows autoloading
* to be correctly configured, regardless of the installation method and keeps
* the use of composer completely optional. This setup should work fine for
* most users, however, feel free to configure autoloading however you'd like.
*/
// Composer autoloading
if (file_exists('vendor/autoload.php')) {
$loader = include 'vendor/autoload.php';
}
if (class_exists('Zend\Loader\AutoloaderFactory')) {
return;
}
$zf2Path = false;
if (is_dir('vendor/ZF2/library')) {
$zf2Path = 'vendor/ZF2/library';
} elseif (getenv('ZF2_PATH')) { // Support for ZF2_PATH environment variable or git submodule
$zf2Path = getenv('ZF2_PATH');
} elseif (get_cfg_var('zf2_path')) { // Support for zf2_path directive value
$zf2Path = get_cfg_var('zf2_path');
}
if ($zf2Path) {
if (isset($loader)) {
$loader->add('Zend', $zf2Path);
$loader->add('ZendXml', $zf2Path);
// include $zf2Path . '/Zend/Loader/AutoloaderFactory.php';
} else {
include $zf2Path . '/Zend/Loader/AutoloaderFactory.php';
Zend\Loader\AutoloaderFactory::factory(array(
'Zend\Loader\StandardAutoloader' => array(
'autoregister_zf' => true
)
));
}
}
if (!class_exists('Zend\Loader\AutoloaderFactory')) {
throw new RuntimeException('Unable to load ZF2. Run `php composer.phar install` or define a ZF2_PATH environment variable.');
}
可以從這裡下載下傳Zend Framework包，看一下下面的解壓目錄，
其實主要加載的是 Zend
ZendXml
Zend
ZendXml
1、先嘗試用Composer這個管理工具加載
具體檔案在
vendor/autoload.php
和
vendor/composer/autoload_real.php
這兩個檔案中，前一個檔案調用後一個檔案執行庫查找，後一個檔案在
vendor/composer/autoload_namespaces.php
，
vendor/composer/autoload_psr4.php
，
vendor/composer/autoload_classmap.php
查找需要的配置檔案，而後兩個檔案中放的就是
Zend
與
ZendXml
的工作路徑
<?php
// autoload_psr4.php @generated by Composer
$vendorDir = dirname(dirname(__FILE__));
$baseDir = dirname($vendorDir);
return array(
'Zend\\' => array($vendorDir . '/zendframework/zendframework/library/Zend'),
);
<?php
// autoload_namespaces.php @generated by Composer
$vendorDir = dirname(dirname(__FILE__));
$baseDir = dirname($vendorDir);
return array(
'ZendXml' => array($vendorDir . '/zendframework/zendxml/library'),
);
然後你會發現這兩個路徑下啥東西也沒有，是以你可以建立
Zend
和
ZendXml
兩個路徑，把相應的包導進去，一定要在
Zend Studio
就是在
/zendframework/zendxml/library
上右鍵 -> 建立（兩個）檔案夾 -> 導入（import），如果你在項目目錄下建立，再怎麼重新整理也找不到建立的目錄，感覺很不爽啊
2、用 getenv('ZF2_PATH')
getenv('ZF2_PATH')
這個是要在
Apache
的
http.conf
檔案夾配置的。比如說我的
wamp
的配置檔案目錄就是
D:\wampserver\wamp\bin\apache\apache2.4.18\conf\http.conf
，在後面加上下面這行代碼，後面的目錄替換成你自己的
library
，重新開機服務
SetEnv ZF2_PATH "E:\Zend\library"
3、用 get_cfg_var('zf2_path')
get_cfg_var('zf2_path')
這個配置檔案是
php.ini
，我的目錄是
D:\wampserver\wamp\bin\apache\apache2.4.18\bin\php.ini
，加上下面一句，重新開機服務
zf2_path = "E:\Zend\library"
對于後面兩個，還要改一下
init_autoloader.php
檔案：
if ($zf2Path) {
if (isset($loader)) {
$loader->add('Zend', $zf2Path);
$loader->add('ZendXml', $zf2Path);
include $zf2Path . '/Zend/Loader/AutoloaderFactory.php'; // add this
} else {
include $zf2Path . '/Zend/Loader/AutoloaderFactory.php';
Zend\Loader\AutoloaderFactory::factory(array(
'Zend\Loader\StandardAutoloader' => array(
'autoregister_zf' => true
)
));
}
}
即使你後來删除了環境變量還是會存在，如果不想用了，就設定成空，或者到php 手冊中尋找方案。
解決方案
1、在
/zendframework/zendxml/library
下右鍵建立兩個目錄：
Zend
和
ZendXml
後，再把下載下傳好的庫檔案
ZendFramework-2.4.9\library
導入，最後
/zendframework/zendxml/library
這個目錄下大概是這個樣子：
2、在
Apache
的
http.conf
檔案（參考路徑：
D:\wampserver\wamp\bin\apache\apache2.4.18\conf\http.conf
）中添加下面這行代碼
SetEnv ZF2_PATH "E:\Zend\library"
重新開機服務，修改
init_autoloader.php
檔案
if ($zf2Path) {
if (isset($loader)) {
$loader->add('Zend', $zf2Path);
$loader->add('ZendXml', $zf2Path);
include $zf2Path . '/Zend/Loader/AutoloaderFactory.php'; // add this
} else {
include $zf2Path . '/Zend/Loader/AutoloaderFactory.php';
Zend\Loader\AutoloaderFactory::factory(array(
'Zend\Loader\StandardAutoloader' => array(
'autoregister_zf' => true
)
));
}
}
3、在
php
的
php.ini
檔案（參考路徑：
D:\wampserver\wamp\bin\apache\apache2.4.18\bin\php.ini
）中添加下面這行代碼
zf2_path = "E:\Zend\library"
重新開機服務，修改
init_autoloader.php
檔案
if ($zf2Path) {
if (isset($loader)) {
$loader->add('Zend', $zf2Path);
$loader->add('ZendXml', $zf2Path);
include $zf2Path . '/Zend/Loader/AutoloaderFactory.php'; // add this
} else {
include $zf2Path . '/Zend/Loader/AutoloaderFactory.php';
Zend\Loader\AutoloaderFactory::factory(array(
'Zend\Loader\StandardAutoloader' => array(
'autoregister_zf' => true
)
));
}
}