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PHP实现手机号码隐藏中间四位方法
方法一：
function hidtel($phone){
$IsWhat = preg_match(‘/(0[0-9]{2,3}[\-]?[2-9][0-9]{6,7}[\-]?[0-9]?)/i’,$phone); //固定电话
if($IsWhat == 1){
return preg_replace(‘/(0[0-9]{2,3}[\-]?[2-9])[0-9]{3,4}([0-9]{3}[\-]?[0-9]?)/i’,’$1****$2′,$phone);
}else{
return preg_replace(‘/(1[358]{1}[0-9])[0-9]{4}([0-9]{4})/i’,’$1****$2′,$phone);
}
}
方法二：
$num = “13966778888”
$str = substr_replace($num,’****’,3,4);