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Home Database phpMyAdmin How can I increase PHP's execution time or upload limits if phpMyAdmin operations time out?

How can I increase PHP's execution time or upload limits if phpMyAdmin operations time out?

Jul 06, 2025 am 12:25 AM
php execution time

When encountering phpMyAdmin timeout or upload restrictions, you usually need to adjust the PHP configuration. 1. Increase max_execution_time, if set to 300 seconds or 0 to remove the time limit. 2. Adjust upload_max_filesize and post_max_size, if both are set to 64M, and make sure post_max_size is slightly larger. 3. If you cannot edit php.ini, you can add the corresponding settings in .htaccess. After modification, restart the web server and take effect.

If you're running into timeouts or upload limits when using phpMyAdmin, it's usually because PHP has default restrictions on execution time and file sizes. To fix this, you need to adjust a few key settings in your PHP configuration.

1. Increase max_execution_time

This setting controls how long a PHP script can run before timing out. If you're importing large databases or performing complex operations in phpMyAdmin, the default 30 seconds might not be enough.

  • Open your php.ini file (the exact location depends on your server setup).
  • Find the line that says max_execution_time and change it to something like 300 (which is 5 minutes).
  • Save the file and restart your web server (Apache or Nginx) for changes to take effect.

A good rule of thumb: if you're doing big imports or exports, setting it to 0 removes the time limit entirely — but use this cautiously on production servers.

2. Adjust upload_max_filesize and post_max_size

These two settings control how large of a file you can upload through phpMyAdmin.

  • Still in the php.ini , look for upload_max_filesize and post_max_size .
  • Set both to something reasonable for your needs, like:
    • upload_max_filesize = 64M
    • post_max_size = 64M

Note: post_max_size should always be slightly larger than upload_max_filesize , otherwise uploads may still fail.

After making these changes, restart your web server again.

3. Use .htaccess if You Can't Edit php.ini

Some shared hosting environments won't let you edit the main php.ini . In those cases, you can try adding these lines to your .htaccess file:

 php_value upload_max_filesize 64M
php_value post_max_size 64M
php_value max_execution_time 300

Keep in mind that this method doesn't work everywhere — especially if PHP is running as a CGI module.

You don't have to go overboard with these values. Just set them high enough to handle your typical phpMyAdmin tasks. Once done, you should see fewer timeouts and upload issues. That's basically it — not complicated, but easy to overlook.

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