How to show field in snippet? I use PHP filter module, and write this in other field in my node:

&lt;?php
  $node = node_load(52);
  $field = field_view_field('node', $node, 'myfield');
  print $field;
?&gt;


It doesnt work. 
And how i can load id for node?
field_view_field returns a renderable array for the field value. So you should use render() function: 

&lt;?php
  $node = node_load(52);
  $field = field_view_field('node', $node, 'myfield');
  print render($field);
?&gt;