Fix WordPress "Maximum Upload Size Exceeded"

Understanding the Error

WordPress shows limit (e.g., "Maximum upload file size: 2MB").

Fix 1: Increase PHP Settings

Edit php.ini:

upload_max_filesize = 64M
post_max_size = 64M
max_execution_time = 300
memory_limit = 256M

Restart PHP-FPM:

sudo systemctl restart php*-fpm

Fix 2: .htaccess Method

php_value upload_max_filesize 64M
php_value post_max_size 64M
php_value max_execution_time 300
php_value memory_limit 256M

Fix 3: Nginx Configuration

# In server block
client_max_body_size 64M;

# Reload Nginx
sudo systemctl reload nginx

Fix 4: wp-config.php

@ini_set( 'upload_max_filesize' , '64M' );
@ini_set( 'post_max_size', '64M');
@ini_set( 'memory_limit', '256M' );

Fix 5: Functions.php

add_filter( 'upload_size_limit', 'PBP_increase_upload' );
function PBP_increase_upload($bytes) {
    return 67108864; // 64MB in bytes
}

Verify Changes

Create info.php:

<?php phpinfo(); ?>

Search for "upload_max_filesize" to confirm value.