Use wp_filesize in core

[spacedmonkey]

Introduced in [52837] as part of #49412, the wp_filesize function is a wrapper around filesize. It has some improves on this function, like casting to int and filters. The filesize function is call throughout core functions. This function may be useful in more contexts.

[spacedmonkey]

CC @flixos90

Replaced usage of filesize functions to wp_filesize in wp-admin/theme-editor.php

Trac ticket: https://core.trac.wordpress.org/ticket/55376

LGTM!

[spacedmonkey]

I would consider using this function in the following places.

​https://github.com/WordPress/wordpress-develop/blob/8697aee5f9d834c1d7135524c7f13dc3c96f4d85/src/wp-includes/rest-api/endpoints/class-wp-rest-edit-site-export-controller.php#L87

​https://github.com/WordPress/wordpress-develop/blob/2648a5f984b8abf06872151898e3a61d3458a628/src/wp-includes/ms-files.php#L45

​https://github.com/WordPress/wordpress-develop/blob/ba518c2d86e62ed63b24e9a720d42aee3ab951fb/src/wp-admin/includes/class-wp-filesystem-direct.php#L490

​https://github.com/WordPress/wordpress-develop/blob/33048b933379ae48723f617588ed8aa996ca5d14/src/wp-admin/includes/class-wp-filesystem-ssh2.php#L649

​https://github.com/WordPress/wordpress-develop/blob/ba518c2d86e62ed63b24e9a720d42aee3ab951fb/src/wp-admin/includes/ms.php#L33

​https://github.com/WordPress/wordpress-develop/blob/ecf1d6a158c70dd7f10cc42c4b26ecb0fb22bb59/src/wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php#L1287

​https://github.com/WordPress/wordpress-develop/blob/2d707c45127d204936eef48b3c9e133b60596b33/src/wp-admin/includes/update-core.php#L1256

​https://github.com/WordPress/wordpress-develop/blob/26bb0d7479e1dd08dd982513ee6bee94f4c6f13d/src/wp-admin/includes/plugin.php#L401

​https://github.com/WordPress/wordpress-develop/blob/6adff3d989319e633cfdcdb7aff4dc906087c230/src/wp-includes/script-loader.php#L2736

​https://github.com/WordPress/wordpress-develop/blob/8db1549c0f1af05fbb919ad2eeb7f7bff5a63da9/src/wp-includes/class-wp-customize-manager.php#L6035

Thanks @Chargnn for the patch. I have added some links other places where this function can be used.

[acoulombe]

Replying to spacedmonkey:

comment

1067905355
}}}
​spacedmonkey commented on ​PR #2402:

I would consider using this function in the following places.

Thank you! Looking into this right now.

[SergeyBiryukov]

Replying to spacedmonkey:

​https://github.com/WordPress/wordpress-develop/blob/ba518c2d86e62ed63b24e9a720d42aee3ab951fb/src/wp-admin/includes/class-wp-filesystem-direct.php#L490

​https://github.com/WordPress/wordpress-develop/blob/33048b933379ae48723f617588ed8aa996ca5d14/src/wp-admin/includes/class-wp-filesystem-ssh2.php#L649

​https://github.com/WordPress/wordpress-develop/blob/2d707c45127d204936eef48b3c9e133b60596b33/src/wp-admin/includes/update-core.php#L1256

I would suggest not to use wp_filesize() in WP_Filesystem_* classes or other mission-critical parts like the update_core() function, due to backward compatibiltity concerns. See the discussion in comment:2:ticket:55688.

Using wp_filesize() in other instances seems fine at a glance.

[nihar007]

Hi,

[nihar007]

Thanks, @spacedmonkey for your advice, I followed your instruction and changed the filesize() function in the rest of the files.

[spacedmonkey]

@nihar007 This patch needs a refresh.

Trac ticket: https://core.trac.wordpress.org/ticket/55376

Fixed

Trac ticket: https://core.trac.wordpress.org/ticket/55376

This PR replaces the use of filesize() with wp_filesize() in file.php and class-snoopy.php. The wp_filesize() function provides better handling for file size operations. This ensures improved compatibility and consistency with WordPress core standards.

[desrosj]

I reviewed @ankitkumarshah's PR on GitHub. To summarize here:

• The PR does not address all occurrences of filesize() (minus the file system/update related ones noted by @SergeyBiryukov above).
• Changes an instance within the class-snoopy.php file, which has been deprecated since WP 3.0. There's on benefit to updating this file.

Thank you for the feedback, @desrosj! I’ll make the suggested updates and refresh the PR shortly. 🙌

Hi @desrosj,
Thank you for the feedback! I’ve made the changes noted by @spacedmonkey in his comment on the Trac ticket. The following files were updated:

• src/wp-admin/includes/file.php
• src/wp-admin/includes/ms.php
• src/wp-admin/includes/plugin.php
• src/wp-includes/class-wp-customize-manager.php
• src/wp-includes/ms-files.php
• src/wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php
• src/wp-includes/rest-api/endpoints/class-wp-rest-edit-site-export-controller.php

Please review the PR at your convenience. Thank You 🙌

[ankitkumarshah]

Hi @desrosj,
Thank you for the feedback. I’ve made the necessary changes as requested. Please let me know if there’s anything else you’d like me to address.

This PR replaces direct filesize() calls with wp_filesize() in core WordPress files where the wrapper function is appropriate. The wp_filesize() function (introduced in 5.7 via r52837) provides int casting and filter support, making it the preferred API for getting file sizes in WordPress.

## Files changed

• src/wp-admin/includes/file.php — _wp_handle_upload() file size check
• src/wp-admin/includes/ms.php — check_upload_size() file size check
• src/wp-admin/includes/plugin.php — get_mu_plugins() index.php size check
• src/wp-admin/theme-editor.php — file size checks for theme file reading
• src/wp-includes/class-wp-customize-manager.php — _validate_header_video() video size validation
• src/wp-includes/functions.php — recurse_dirsize() directory size calculation
• src/wp-includes/ms-files.php — Content-Length header for multisite file serving
• src/wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php — upload space check
• src/wp-includes/rest-api/endpoints/class-wp-rest-edit-site-export-controller.php — Content-Length header for export

## Excluded (per reviewer feedback)
Per comment:8 by @SergeyBiryukov, filesystem abstraction and update/auto-update code should not be changed:

• class-wp-filesystem-* — filesystem abstraction classes should use raw PHP filesize()
• update-core.php — update/auto-update code excluded
• Third-party libraries (Snoopy, pclzip, getid3, sodium_compat, ftp) — not WordPress core code

This addresses the feedback from @desrosj on ​PR #7818 requesting the additional instances noted by @spacedmonkey in comment:4.