How to modify PHP upload file size limit

How to modify PHP upload file size limit
1. general file upload, unless the file is small. Like a 5M file, it's likely to take more than a minute to upload.
In PHP, however, the default maximum execution time for this page is 30 seconds. That means more than 30 seconds, the script stops executing.
This results in a situation where the Web page cannot be opened. Then we can modify the Max_execution_time
Look in the php.ini.
Max_execution_time
The default is 30 seconds. Change to
Max_execution_time = 0
0 means no Limit
2. Modify Post_max_size to set the maximum allowable size for post data. This setting also affects file uploads.
PHP default post_max_size is 2M. If the POST data size is larger than post_max_size $_post and $_files superglobals will be empty.
Find Post_max_size. instead
Post_max_size = 150M
3. A lot of people will change the second step. However, the maximum upload file is still 8M.
Why, we're going to change one. The parameter upload_max_filesize indicates the maximum size of the uploaded file.
Find Upload_max_filesize, default to 8M instead
Upload_max_filesize = 100M
It is also stated that the post_max_size is better than upload_max_filesize.

How to modify PHP upload file size limit