php remove wordpress shortcodes
$content = '[vc_row type=""boxed""][vc_column][vc_column_text]LOREM IPSUM[/vc_column_text][vc_empty_space height=""25px""][vc_column_text]';
$content = preg_replace('#\[[^\]]+\]#', '', $content);
echo $content; // Result: LOREM IPSUM