php - How do I find and replace words in wordpress -


i developing plugin used find , replace words. far have code , not seem work. 

function replace_content($content){     $wp_post = get_the_content();     $content = str_replace('lorem',' ronny',$wp_post);     return $content;  } add_filter('the_content','replace_content');

any highly appreciated.

found solution. content in capital letters, used str_ireplace() instead of str_replace() function ignore case.


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