PHP uses asterisks to hide some user names, ID cards, IPs, mobile phone numbers, etc.

PHP uses asterisks to hide some user names, ID cards, IPs, mobile phone numbers, etc._PHP tutorial

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Release： 2016-07-13 10:34:27

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1. Imitate Taobao review and purchase records to hide part of the user name. The following code is available for personal testing.

Copy code The code is as follows:

function cut_str($string, $sublen, $start = 0, $code = 'UTF-8 ')
{
if($code == 'UTF-8')
{
$pa = "/[x01-x7f]|[xc2-xdf][x80-xbf]| xe0[xa0-xbf][x80-xbf]|[xe1-xef][x80-xbf][x80-xbf]|xf0[x90-xbf][x80-xbf][x80-xbf]|[xf1-xf7] [x80-xbf][x80-xbf][x80-xbf]/";
preg_match_all($pa, $string, $t_string);

If(count($t_string[0]) - $start > $sublen) return join('', array_slice($t_string[0], $start, $sublen));
return join(' ', array_slice($t_string[0], $start, $sublen));
}
else
{
$start = $start*2;
$sublen = $sublen* 2;
$strlen = strlen($string);
$tmpstr = '';

for($i=0; $i< $strlen; $i++)
{
if($i>=$start && $i< ($start+$sublen))
{
}
else
If(ord(substr($string, $i, 1))> ;129) $i++;
}
}
}<🎜 //if(strlen($tmpstr)< $strlen ) $tmpstr.= "...";
}
}
}

Usage example:

Copy code

The code is as follows:

$str = "Tathagata Palm";echo cut_str($str, 1, 0).'**'.cut_str($str, 1, -1);//Output: like **palm

2. The last 4 digits of the PHP ID number are hidden with asterisks

A very simple question. I want to hide the 4 digits of the ID card number and birthday. I didn’t see it when I first searched for the function. Then I used several functions to handle it. I thought it was too troublesome so I searched online. Later I found a function. can be processed directly, so record it:

substr_replace() function introduction:

Copy code

The code is as follows:

Definition and Usagesubstr_replace() function replaces part of a string with another string. Syntaxsubstr_replace(string,replacement,start,length)

Parameter Description

string Required. Specifies the string to check.
replacement
Required. Specifies the string to be inserted.
start
Required. Specifies where in the string to begin replacement.
Positive numbers - Replace at start offset
Negative numbers - Replace at start offset from end of string
0 - Start at first character in string Replace
length
optional. Specifies how many characters to replace.
Positive number - the length of the string to be replaced
Negative number - the number of characters to be replaced from the end of the string
0 - insertion instead of replacement

Usage example:

Copy code

The code is as follows:

[code]echo strlen($idcard) ==15?substr_replace($idcard,"****",8,4):(strlen($idcard)==18?substr_replace($idcard,"****",10,4):"Identity The number of certificates is abnormal! ");
[/code]

3. Replace the last digit of the IP with an asterisk

Replace the last digit of the IP with an asterisk and the code is as follows:
Method 1:

Copy the code The code is as follows:

str = '1.1.1.1';
reg = '/((?:d+.){3})d+/';
echo preg_replace(reg, "\ 1*", str);
?>

Method 2:

Copy code The code is as follows:

$ip =$_SERVER['REMOTE_ADDR'];
$ip_arr= explode('.', $ip);
$ip_arr[3]='*' ;
$ip= implode('.', $ip_arr);
echo $ip;
?>

4. Five ways to hide mobile phone numbers with * asterisks

Copy code The code is as follows:

//Method 1
function mobile_asterisk($mobile)
{
$ mobile_asterisk = substr($mobile,0,4)."****".substr($mobile,8,3);
return $mobile_asterisk;
}
echo mobile_asterisk("15810904579") ;
//Method 2
echo preg_replace("/(1d{1,4})dddd(d{3,4})/", "$1****$2", "15810904579");

//Method 3
$haoma="15012345678";
echo preg_replace("/(d{3})d{5}/","$1*****",$haoma) ;
//Output 150*****678

//Method 4
$tel1 = "13888111188";
$tel2 = "+8613888111188";
$tel3 = "0861088111188";
$tel4 = "086-010-88111188 ";
echo preg_replace('/(^.*)d{4}(d{4})$/','\1****\2',$tel1),"n";
echo preg_replace('/(^.*)d{4}(d{4})$/','\1****\2',$tel2),"n";
echo preg_replace( '/(^.*)d{4}(d{4})$/','\1****\2',$tel3),"n";
echo preg_replace('/(^ .*)d{4}(d{4})$/','\1****\2',$tel4),"n";

//Method 5
//Shield the four digits in the middle of the phone number
function hidtel($phone)
{
$IsWhat = preg_match('/(0[0-9] {2,3}[-]?[2-9][0-9]{6,7}[-]?[0-9]?)/i',$phone); //Landline phone
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);
}
}