Many of the wordpress user wants to set the summary limit in the_excerpt. We can do it simply by adding the function:
$limit = $num+1;
$excerpt = explode(‘ ‘, get_the_excerpt(), $limit);
$excerpt = implode(” “,$excerpt).”…”;
Add this function in function.php file of your theme. Now, edit the index.php file of your theme and find this:
<? php excerpt(’25’); ?>
This will set to 25 words in the excerpt summary. You can modify it according to your requirement.