Drupal programmatically render a block

render_block.php

<?php

  //module_invoke('module_name', 'block_view', 'block_identifier')
  //Printing using Drupal block system
  $block = module_invoke('block', 'block_view', '1');
  print render($block['content']);
  
  //Printing using a contrib module block, this example uses the weather module
  $block = module_invoke('weather', 'block_view', 'user');
  print render($block['content']);
?>