脱敏方法代码:
function desensitize($string, $start = 0, $length = 0, $re = '*'){ if(empty($string) || empty($length) || empty($re)) return $string; $end = $start + $length; $strlen = mb_strlen($string); $str_arr = array(); for($i=0; $i<$strlen; $i++) { if($i>=$start && $i<$end) $str_arr[] = $re; else $str_arr[] = mb_substr($string, $i, 1); } return implode('',$str_arr); }
测试代码:
echo desensitize('15888888888',4,5,'#')
测试结果: