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Too many global variables #41

tom-- opened this Issue Jan 7, 2013 · 5 comments

3 participants

tom-- commented Jan 7, 2013

By the time an action runs the following globals have been defined:

'frontendConfigDir' => '/sites/spin-be/frontend/config'
'root' => '/sites/spin-be/frontend/config/../..'
'paramsLocalFile' => '/sites/spin-be/frontend/config/params-local.php'
'paramsLocalFileArray' => array(...)
'paramsEnvFile' => '/sites/spin-be/frontend/config/params-env.php'
'paramsEnvFileArray' => array(...)
'paramsCommonFile' => '/sites/spin-be/frontend/config/../../common/config/params.php'
'commonConfigDir' => '/sites/spin-be/common/config'
'commonParamsLocalFile' => '/sites/spin-be/common/config/params-local.php'
'commonParamsLocal' => array(...)
'commonEnvParamsFile' => '/sites/spin-be/common/config/params-env.php'
'commonEnvParams' => array(...)
'paramsCommonArray' => array(...)
'params' => array(...)
'mainLocalFile' => '/sites/spin-be/frontend/config/main-local.php'
'mainLocalConfiguration' => array(...)
'mainEnvFile' => '/sites/spin-be/frontend/config/main-env.php'
'mainEnvConfiguration' => array(...)
'config' => array(...)
'app' => WebApplication(...)

Only the last of them seems reasonable (though I won't use it).

The others can be avoided by using an IEFE where needed, for example:

return call_user_func(function () {
    $commonConfigDir = dirname(__FILE__);

    // get local parameters in
    $commonParamsLocalFile = $commonConfigDir . DIRECTORY_SEPARATOR . 'params-local.php';
    $commonParamsLocal = file_exists($commonParamsLocalFile) ? require ($commonParamsLocalFile) : array();

    // if exists, include it, otherwise set as an empty array
    $commonEnvParamsFile = $commonConfigDir . DIRECTORY_SEPARATOR . 'params-env.php';
    $commonEnvParams = file_exists($commonEnvParamsFile) ? require($commonEnvParamsFile) : array();

    return CMap::mergeArray(
            // cache settings -if APC is not loaded, then use CDbCache
            'cache.core' => extension_loaded('apc') ?
                    'class' => 'CApcCache',
                ) :
                    'class' => 'CDbCache',
                    'connectionID' => 'db',
                    'autoCreateCacheTable' => true,
                    'cacheTableName' => 'cache',
            'cache.content' => array(
                'class' => 'CDbCache',
                'connectionID' => 'db',
                'autoCreateCacheTable' => true,
                'cacheTableName' => 'cache',
            // url rules needed by CUrlManager
            'url.rules' => array(
                '<controller:\w+>/<id:\d+>' => '<controller>/view',
                '<controller:\w+>/<action:\w+>/<id:\d+>' => '<controller>/<action>',
                '<controller:\w+>/<action:\w+>' => '<controller>/<action>',
            'php.exePath' => '/usr/bin/php'
        CMap::mergeArray($commonEnvParams, $commonParamsLocal)
Clevertech member

@tom--, a lot more simple way is just to wrap the variable declarations in unnamed block, like this:

    $globalConfig = array(<...>);
    $localConfig = require(<...>);
    return CMap::mergeArray($globalConfig, $localConfig);

This way we don't need rocket science like anonymous functions. It'll definitely be in YiiBoilerplate someday.

tom-- commented Jan 22, 2013

good gracious! i didn't even know php had such a feature. nice to know. and better performance too, i imagine.

tom-- commented Jan 22, 2013

@hijarian is that feature of PHP documented? I haven't been able to find it.

Clevertech member

Sorry, @tom--, forget it, it doesn't work. 👎 I mixed up PHP and C++ in my mind. Block scoping doesn't work that way in PHP. So, for now you have the sole working solution.

rinatio commented Sep 6, 2013

I cleaned up config files a bit, there are no so much globals anymore

@rinatio rinatio closed this Sep 6, 2013
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