I had quite a few question on how to change the excerpt limit in wordpress as by default the limit is set to 55 words and if you make the change in the core file it will get over written when you update.
The easy way is to add filter in functions.php file of your theme. If you using default theme then is best to create a child theme and add the filter in child theme functions.php.
The first filter will let you change the number of words displayed by the function the_excerpt(), and yes, you can have more than 55 words.
The second filter allows you to change the trailing [...] that appears at the end of your excerpt.
This are filters you add
function new_excerpt_length($length) {
return 30;
}
add_filter('excerpt_length', 'new_excerpt_length');
You can change number 30 to what ever number you want to use.
function new_excerpt_more($more) {
return '[.....]';
}
add_filter('excerpt_more', 'new_excerpt_more');
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