Cronjob脚本失败，但通过浏览器工作（Zip Archive PHP）

Question

I have a PHP script that generates large zip files, when I execute it via SSH it works, but the same script fails intermittently when executed via cron.

Things I tried:

• Changing paths inside the script, but since it executes via SSH it shouldn't be the issue
• Changing path to the PHP executable inside the cron command (I ran "whereis php" and used the 2 available PHP executable locations)
• Modified file permissions
• Put time limit as ini_set('max_execution_time', 990000); and via set_time_limit (990000);
• Half a dozen support tickets with the hosting company, but they can't help

Last thing I'm trying right now, which I don't think will help is manually setting a time limit after which the cronjob will fail by including: /bin/timeout -s 2 990000 but I think it's useless since normally there are no timelimits, unless I'm missing something.

Log file shows that the script fails after I instantiate an object from class ZipArchive and then try to execute the addFile method.

This is my current cron command:

30 4 * * * /bin/timeout -s 2 990000 /usr/bin/php /home/script.php > /tmp/script.log

Appreciate your help.

Answer 1

Unfortunately the only solution to make this work is an ugly work, which works great. It's a simple CURL script that executes the file that crontab cannot execute.. Then I put the CURL file in the crontab instead.

So I'm executing the CURL script via crontab, that then goes and executes the script that cannot be executed via cron. It's ugly, but it works..

# Open a PHP/CURL session
$s = curl_init();

# Configure the PHP/CURL command
curl_setopt($s, CURLOPT_USERAGENT,'Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)');
curl_setopt($s, CURLOPT_URL, "HTTP://YOUR_DOMAIN.COM/SCRIPT.PHP"); // Define target site
curl_setopt($s, CURLOPT_RETURNTRANSFER, TRUE);  // Return file contents in a string
curl_setopt($s, CURLOPT_BINARYTRANSFER, false);  // Indicate binary transfer
curl_setopt($s, CURLOPT_REFERER, "https://google.ca");     // Referer value
curl_setopt($s, CURLOPT_SSL_VERIFYPEER, FALSE); // No certificate
curl_setopt($s, CURLOPT_FOLLOWLOCATION, TRUE);  // Follow redirects
curl_setopt($s, CURLOPT_MAXREDIRS, 4);          // Limit redirections to four

# Execute the PHP/CURL command (send contents of target web page to string)

if($run_the_script = curl_exec($s))
    echo "cron executed!";

The cron script the the following in the header, it's loose protection against normal users executing the script:

if (isset($_SERVER['REMOTE_ADDR']) AND $_SERVER['SERVER_ADDR'] != $_SERVER['REMOTE_ADDR']) die('Permission denied.');

^ Check that the file is being executed by a script that resides on the same IP as the server