How to set attachment upload size limit in php

PHP is a widely used server-side programming language commonly used to develop web applications, many of which involve uploading files. Uploading attachments is very important for web applications, but sometimes you have to face upload file size limitations, usually the default upload file size limit.

So how to set the size limit for PHP attachment upload?

1. Modify the php.ini configuration file

In the php.ini configuration file, there is a setting called upload_max_filesize, which can be used Limit the size of uploaded files. Find the php.ini configuration file, open the editor, and find the following line:

upload_max_filesize=2M

The 2M here means that the maximum upload file size is 2MB, you can set it to a larger or smaller size as needed . Generally speaking, the maximum upload file size is set according to your needs.

2. Modify the .htaccess file

If your PHP does not have direct access to php.ini, you can modify the .htaccess file. . Add the following code to the .htaccess file:

php_value upload_max_filesize 30M

The 30M here is the maximum size for file upload.

3. Modify PHP script

If you only need to increase the attachment upload size of a specific PHP script, you can do so by modifying the PHP script. At the beginning of the PHP script, add the following code:

ini_set('upload_max_filesize','30M');

The 30M here is the maximum size of the uploaded attachment.

Summary

Generally speaking, using the first method to modify the php.ini configuration file is the most common method. But if you don't want to affect other PHP scripts, you can modify the size of the uploaded attachment by modifying the .htaccess file or PHP script. This allows for more flexible settings and ensures that only the scripts that need to be modified are set without affecting the running of other PHP scripts.

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