无插件实现限制WordPress评论最小字数

/**
*WordPress 限制评论最小字数
*/
function Bing_minimal_comment_length( $commentdata ){
$minlength = 20;//评论最少字数
preg_match_all( '/./u', trim( $commentdata['comment_content'] ), $maxlength );
$maxlength = count( $maxlength[0] );
if( $maxlength < $minlength ) wp_die( '评论最少需要 ' . $minlength . ' 字！' ); return $commentdata; } add_filter( 'preprocess_comment', 'Bing_minimal_comment_length', 8 );