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PhpHow-ToBeginner · 3 min read

How to Increase Upload Size in PHP: Simple Steps

To increase upload size in PHP, edit the php.ini file and set higher values for upload_max_filesize and post_max_size. Then restart your web server to apply the changes.
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Syntax

In the php.ini configuration file, you adjust these two main settings:

  • upload_max_filesize: Maximum size of an uploaded file.
  • post_max_size: Maximum size of POST data allowed, which must be larger than upload_max_filesize.

Both values are set with a number followed by a size unit like M for megabytes.

ini
upload_max_filesize = 20M
post_max_size = 25M
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Example

This example shows how to increase the upload size to 20 megabytes by editing php.ini. After changing, restart your web server to apply.

ini
; php.ini snippet
upload_max_filesize = 20M
post_max_size = 25M

; Then restart your web server, for example:
sudo systemctl restart apache2

; or
sudo systemctl restart nginx
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Common Pitfalls

Common mistakes include:

  • Setting upload_max_filesize larger than post_max_size, which causes uploads to fail.
  • Not restarting the web server after changes, so new limits don't apply.
  • Overlooking other limits like max_execution_time or memory_limit that can affect large uploads.
ini
; Wrong configuration example
upload_max_filesize = 30M
post_max_size = 20M

; Correct configuration example
upload_max_filesize = 20M
post_max_size = 30M
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Quick Reference

Summary tips to increase upload size in PHP:

  • Edit php.ini to increase upload_max_filesize and post_max_size.
  • Make sure post_max_size is larger than upload_max_filesize.
  • Restart your web server after changes.
  • Check other limits like max_execution_time and memory_limit if uploads still fail.
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Key Takeaways

Increase upload size by setting higher values for upload_max_filesize and post_max_size in php.ini.
Always ensure post_max_size is larger than upload_max_filesize to avoid upload errors.
Restart your web server after changing php.ini to apply new settings.
Check related limits like max_execution_time and memory_limit for large file uploads.
Use size units like M (megabytes) when setting upload limits in php.ini.

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