Home >Backend Development >PHP Tutorial >PHP regular expression implements the display function of replacing the middle 4 digits of a mobile phone number with asterisks
因为需要为客户保持隐私,所以手机号码不能完全显示在网站上,但是又不能不显示,所以就很多网站想到了显示但是不完整显示,在上面用星号替换部分显示,其实做到这个很简单,用正则替换显示其中的一部分即可。
Method 1:
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); } }
Method 2:
$num = "13966778888" $str = substr_replace($num,'****',3,4);
实例:
$phonenum = "13966778888"; echo hidtel($phonenum);
最后输出:139****8888
总结
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