Silence set_time_limit() call in wp-admin/includes/class-wp-upgrader.php

[autotutorial]

Aggiornamento delle traduzioni per Twenty Twenty (it_IT)…

Warning: scandir(/home/.dummy/temp/): failed to open dir: Permission denied in /home/user/wp/wp-includes/functions.php on line 2479

Warning: scandir(): (errno 13): Permission denied in /home/user/wp/wp-includes/functions.php on line 2479

Warning: array_diff(): Argument #1 is not an array in /home/user/wp-includes/functions.php on line 2479

Notice: set_time_limit() has been disabled for security reasons in /home/user/wp-admin/includes/class-wp-upgrader.php on line 468
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<?php
            //Compatibily wiht open_basedir
            $dir_trim = dirname( '/' . trim($dir, '/\\') . '/' ) !== '.' ? $dir_default = array( '.','..' ) : $dir_default = array( '.' );
            $dir_arr = @scandir( $dir );
                if( !$dir_arr ) {
                unset( $dir_arr );
                $dir_arr = $dir_default;
                }
             //restore key
             $files = array_values( array_diff( $dir_arr, array( '.', '..' ) ) );
             unset( $dir_default, $dir_array, $dir_trim );

[SergeyBiryukov]

Hi there, welcome to WordPress Trac!

Thanks for the report, we're already tracking this issue in #48960.

[autotutorial]

Notice: set_time_limit() has been disabled for security reasons in /home/user/wp-admin/includes/class-wp-upgrader.php on line 468
Hi thanks for the welcome, the set_time_limit notice must be silenced.

[SergeyBiryukov]

Replying to autotutorial:

Notice: set_time_limit() has been disabled for security reasons in /home/user/wp-admin/includes/class-wp-upgrader.php on line 468
Hi thanks for the welcome, the set_time_limit notice must be silenced.

Reopening to address that.

The silence operator was removed in [45611/trunk/src/wp-admin/includes/class-wp-upgrader.php].

Just noting there are at least 6 instances of set_time_limit() in WordPress core (not counting external libraries), only one of which is silenced (in wp_get_http()).

[autotutorial]

Thanks for your answer from WordPress 5.2 the minimum php requirement is 5.6.20, I wonder if you have any precedent to temporarily disable error_reporting(0) in order not to use the suppression operator (it's slow).
Obviously for all those probable functions disabled but necessary for WordPress ini_get, ini_set, chmod, buffer, temporary directory etc.
Downloading the file the weight is known but the Download and Upload speed is unknown, you could add a pre-calculation for the zip files (WordPress update, plugin, repository theme)
, subsequently calculate the variable speed.
For the second question, I am afraid there is not much to do to create the code to handle this because it is very complex.