在cron作业中，file_put_contents无法正常工作

Question

I have a cron job running every 1 minute to send push messages to mobile phones.

1.I perform fetch query in database to get all messages that I need to send

2.With the data in that array I perform another fetch query. I use file_put_contents to write data to some file .

3.Then I send push messages using some services.

Message is successfully received but data is not written in file (that I do in second point).

Note: This code runs perfectly when I manually run this file on my local machine.

What I found

Someone suggested me that your mysql is performing queries slow and so other lines of scripts are executed before and so the error.

The Code

    Sone database query that will give customer ids in $customer_ids array

    $customer_ids = array_unique($customer_ids);
    foreach ($customer_ids as $customer_id){
        //Problem is here.file is written here using file_put_contents (this does not work-file does not update)
        PushMessage_Model_Mapper_PushMessage::getPublishfile($customer_id);
    }
    foreach ($customer_ids as $customer_id){
        //push messages are send by calling some function
    }

Are there any known issues for such behavior.

Answer 1

验证执行cronjob的用户是否可以写入文件。