Yii CConsoleCommand has no support for $_SERVER variables?

Question

I'm making a site crawler/sitemap generator module, that needs to be able to run on CRON. I've finished everything and I'm at the stage where I need to ping search engines my new sitemap file. My module has a web interface and the ping works fine from there, but since it needs to run on CRON I made a CConsoleCommand that runs it.

So, the problem I'm getting is that I'm passing the $_SERVER['SERVER_NAME'] variable to the ping action. And CConsoleCommand is throwing an error on Undefined index: SERVER_NAME.

Now, I've tried:

$_SERVER['HTTP_HOST']
$_SERVER['SERVER_NAME']
Yii::app()->request->getBaseUrl(true) //returns absolute URL

But they all throw errors on SERVER_NAME. Does CConsoleCommand not have support for these variables?

C:\xampp\htdocs\YiiCrawler>protected\yiic crawler-sitemap crawl
PHP Error[8]: Undefined index: SERVER_NAME
    in file C:\xampp\htdocs\YiiCrawler\yii-1.1.16.bca042\framework\web\CHttpRequest.php at line 344
#0 C:\xampp\htdocs\YiiCrawler\yii-1.1.16.bca042\framework\web\CHttpRequest.php(392): CHttpRequest->getHostInfo()
#1 C:\xampp\htdocs\YiiCrawler\protected\modules\AvocadoCrawler\commands\ConsoleCrawlerCommand.php(26): CHttpRequest->getBaseUrl()
#2 unknown(0): ConsoleCrawlerCommand->actionCrawl()
#3 C:\xampp\htdocs\YiiCrawler\yii-1.1.16.bca042\framework\console\CConsoleCommand.php(172): ReflectionMethod->invokeArgs()
#4 C:\xampp\htdocs\YiiCrawler\yii-1.1.16.bca042\framework\console\CConsoleCommandRunner.php(71): ConsoleCrawlerCommand->run()
#5 C:\xampp\htdocs\YiiCrawler\yii-1.1.16.bca042\framework\console\CConsoleApplication.php(92): CConsoleCommandRunner->run()
#6 C:\xampp\htdocs\YiiCrawler\yii-1.1.16.bca042\framework\base\CApplication.php(184): CConsoleApplication->processRequest()
#7 C:\xampp\htdocs\YiiCrawler\yii-1.1.16.bca042\framework\yiic.php(33): CConsoleApplication->run()
#8 C:\xampp\htdocs\YiiCrawler\protected\yiic.php(7): require_once()

see http://stackoverflow.com/questions/626416/php-server-name-from-command-line — apoq, Feb 01 '15 at 16:52
it's impossible to get $_SERVER var from console, that's why you get this error. See http://stackoverflow.com/questions/13951429/get-base-url-in-yii-consol-application — apoq, Feb 03 '15 at 19:04

score 0 · Answer 1 · answered Feb 01 '15 at 19:16

0

This error goes back to a basic of understanding the uses of PHP, and it's deployment in a web environment, and as a normal PHP script, so I would urge you to review these concepts to get past your current issue.

When you run a PHP script in a web environment, the web server (example Apache) makes available some data, which PHP exposes to your script via the $_SERVER super-global variable.

Basically speaking, when you run a PHP script from the command line, there is no web server, therefore the $_SERVER variable is not available.

To get the server name, use

$myServer = gethostname()

@apoq posted a linked question that has a number of alternatives that you can use. take some time to read that post.

answered Feb 01 '15 at 19:16

crafter

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thanks but for answering, but it's not what I need. I don't need the name of the server, which is returned by `gethostname()` and `php_uname('n')`. I was expecting the `$_SERVER` variable to still be available since the module is still part of a web application and the Yii console apps still use the base Yii framework. – Aleksandar B. Feb 03 '15 at 15:50
Please read again< Because the source code sits within the web root directory structure does not mean $_SERVER is available. $_SERVER is made available via the web server, and when you are running a command line script, there is no web server, therefore the server variables are not available. What you are asking for is not available. – crafter Feb 03 '15 at 16:56

score 0 · Answer 2 · answered Feb 03 '15 at 02:36

It's true that running php in console mode means that you do not have available the $_SERVER variables.

In my case I did fake it, force it placing this right at the beginning of the console.php:

$_SERVER['SERVER_NAME']='www.example.com';

Then in components I've also edited the request's hostInfo:

...

// application components
    'components'=>array(

        'request' => array(
            'hostInfo' => (_USE_SSL_?"https://":"http://")."{$_SERVER['SERVER_NAME']}",
            'baseUrl' => "",
            'scriptUrl' => '',
        ),
...

I think you can just skip the $_SERVER['SERVER_NAME'] faking and just define hostInfo and that should make Yii generate urls in console mode. But not sure now, as you see I'm using both.

Thanks for the answer, you got close to what I need but I'd rather not hard code it. If there's no other solution I'll implement a config variable which will need to be changed from instance to instance. — Aleksandar B., Feb 03 '15 at 15:52

Yii CConsoleCommand has no support for $_SERVER variables?

2 Answers2