邮件链接过长被过滤情况

[问题] 邮件链接过长被过滤情况

[解决方法] php

function insertWBR($str, $number = 20){ 
  $pattern = "/([\w|\d|\.]\{$number})/";  
  $replacement = "\\1<wbr>";  
  return preg_replace($pattern, $replacement, $str);
}