WordPress Multisite switch_to_blog

Question

I using WordPress multisite and I have a script not tied to a theme nor a plugin:

$blog_id = (isset($_REQUEST['site']) ? $_REQUEST['site'] : 5) ;
switch_to_blog($blog_id);
echo get_option('blogname');

Above does not work it defaults to 1 and if I echo $blog_id it outputs the correct value. The code below works blog_id is hard coded

switch_to_blog(10);
echo get_option('blogname');

I need to be able to change the blog_id on the fly

Answer 1

我遇到了同样的问题，事实证明您不被允许使用$ blog_id，因为它被wordpress使用，更改了变量名，问题就消失了。