Exception `Impossible CRON expression` raised on php-5.5.15(debian) about cron HOT 15 CLOSED

Hi @lokielse, thank you for your message. That really sounds strange. I will check this.

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Okay I installed PHP Version 5.5.15-1~dotdeb.1 and have the following code:

Route::get('cron/test', function () {

    Cron::setDisablePreventOverlapping();
    Cron::setDatabaseLogging(true);
    Cron::setLogOnlyErrorJobsToDatabase(false);

    Cron::add('test_cron_1', '* * * * * *', function () {
    });

    Cron::add('test_cron_2', '0 0 * * *', function () {
    });

    Cron::add('test_cron_3', '0 1 * * *', function () {
    });

    Cron::add('test_cron_4', '0 2 * * *', function () {
    });

    Cron::add('test_cron_5', '0 3 * * *', function () {
    });

    Cron::add('test_cron_6', '0 4 * * *', function () {
    });

    Cron::add('test_cron_7', '0 5 * * *', function () {
    });

    Cron::add('test_cron_8', '0 6 * * *', function () {
    });

    Cron::add('test_cron_9', '0 9 * * *', function () {
    });

    Cron::add('test_cron_10', '0 12 * * *', function () {
    });

    return Cron::run();
});

Unfortunately it works for me and I don't get the Impossible CRON expression. Can you provide me your code?

from cron.

I use your code snippet one by one.
cron commit hash 40aeff3f52038474abee47a3716c64a803dfd683

this work

Cron::add('test_cron_1', '* * * * * *', function () {
});

this one not work

Cron::add('test_cron_2', '0 0 * * *', function () {
 });

and I truncate tables cron_job and cron_manageer.

Then after I reinstall your cron lib just now.

this one work

Cron::add('test_cron_2', '0 0 * * *', function () {
 });

but this one not work

Cron::add('test_cron_3, '0 1 * * *', function () {
 });

I guess that it related to the time.

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mtdowling/cron-expression#60

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That is really strange. I only get the Impossible CRON expression if the expression is only for the past. For example Cron::add('test_cron_1', '* * * * * 2014', function () {});works fine but Cron::add('test_cron_1', '* * * * * 2013', function () {}); does throw the exception. This behaviour is correct because using an expression which will never be true is an error. Please try to use Cron::add('test_cron_2', '0 0 * * * *', function () {});. Can you print the complete stack trace?

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19. RuntimeException
…/­vendor/­mtdowling/­cron-expression/­src/­Cron/­CronExpression.php321
18. Cron\CronExpression getRunDate
…/­vendor/­mtdowling/­cron-expression/­src/­Cron/­CronExpression.php157
17. Cron\CronExpression getNextRunDate
…/­vendor/­mtdowling/­cron-expression/­src/­Cron/­CronExpression.php252
16. Cron\CronExpression isDue
…/­vendor/­liebig/­cron/­src/­Liebig/­Cron/­Cron.php219
15. Liebig\Cron\Cron run
…/­workbench/­pay/­union/­vendor/­illuminate/­support/­Illuminate/­Support/­Facades/­Facade.php205
14. Illuminate\Support\Facades\Facade __callStatic
…/­app/­routes.php32
13. Liebig\Cron\Facades\Cron run
…/­app/­routes.php32

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laravel config app.php

  'timezone'   => 'PRC',

php.ini

date.timezone = PRC

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Seems to be a timezone problem. Please try to change laravels timezone to UTC.

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Yeah! solved.

I should use timezone PRC, but php5.5.15 may not support PRC

I use Asia/Shanghai instead and it works！！！

hahaha ;D

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thanks @liebig

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I am glad to hear this :) You are always welcome, @lokielse!

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http://php.net/manual/en/timezones.others.php

here is a warning.

Warning

Please do not use any of the timezones listed here (besides UTC), they only exist for backward compatible reasons.

from cron.

Hello,
I have question

So it need to add time zone in
laravel config app.php

'timezone'   => 'Asia/Shanghai',

and php.ini

date.timezone = Asia/Shanghai

or only in the laravel config app.php ?

Thank you.

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Both better while I changed only laravel config

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OK Thank you.

I have a little bit confuse about this cron package but I will create a new issue.

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