php隐藏手机号指定位数
function mobileReplace($mobile,$start,$end,$str="*"){ $countStr = abs($end-$start); $replaceStr = $str; for($i=0;$i<$countStr;$i++){ $replaceStr.= $str; } $mobile = substr_replace($mobile, $replaceStr, $start-1, $countStr+1); return $mobile;; }
$mobile = '13188888888';
echo mobileReplace($mobile,4,7); //132****8888