RewriteEngine On

# If asset already exists let Apache do what it knows best serve the file
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^(.+) - [PT,L]

# Redirect with params starting with &
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} ^/wp-content/(.*) [NC]
RewriteCond %{QUERY_STRING} ^[^\&]             
RewriteRule ([a-zA-Z0-9-_\.\/]*) /myownphpcdn.php?url=/$1&%{QUERY_STRING} [L]

# Redirect with params
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} ^/wp-content/(.*) [NC]
RewriteCond %{QUERY_STRING} ^\&
RewriteRule ([a-zA-Z0-9-_\.\/]*) /myownphpcdn.php?url=/$1%{QUERY_STRING} [L]

# Redirect URL only
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} ^/wp-content/(.*) [NC]
RewriteRule ([a-zA-Z0-9-_\.\/]*) /myownphpcdn.php?url=/$1 [L]