upload_size_limit_filter() WP 3.0.0

Filters the maximum upload file size allowed, in bytes.

No Hooks.

Return

Int. Upload size limit in bytes.

Usage

upload_size_limit_filter( $size );

$size(int) (required)

Upload size limit in bytes.

Code of upload size limit filter: wp-includes/ms-functions.php ^{WP 5.2.1}

<?php
function upload_size_limit_filter( $size ) {
	$fileupload_maxk = KB_IN_BYTES * get_site_option( 'fileupload_maxk', 1500 );
	if ( get_site_option( 'upload_space_check_disabled' ) ) {
		return min( $size, $fileupload_maxk );
	}

	return min( $size, $fileupload_maxk, get_upload_space_available() );
}