Most of the classic WordPress blog themes display full content in archive page. If you want to limit the archive post content with a read more button, then add the following snippet to your theme function.php file.

Example:
Limit Archive Page Content and Add Read More Link in WordPress

add_filter("the_content", "break_text");
function break_text($text){
  if(is_front_page() || is_archive() || is_search())
  {
    $length = 400; // limited to 400 characters
    if(strlen($text)<$length+10) return $text; //don't cut if too short
    $break_pos = strpos($text, ' ', $length); //find next space after desired length
    $visible = substr($text, 0, $break_pos);
	$read_more = "... <br><center><a href='".get_permalink()."' class='wp-btn'>Read more..</a></center>";
    return balanceTags($visible) . $read_more;
  } else {
    return $text;
  }
}
Tagged in : #PHP #WordPress

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