Replace the php string with an asterisk or other characters (mobile phone number, ID card)

In php, replace the characters at the specified position in the string with asterisks. Our function can be used to implement substr, preg_replace, substr_replace, and so on. Below we will introduce one instance for the three functions respectively, we mainly talk about the phone number and ID card.

Replace the phone number string with the asterisk code:

The Code is as follows:

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<? Php $ Str = "15832818835 "; Echo substr ($ str,). '*****'. substr ($ str, 8, strlen ($ str); // retain the first and last three digits ?> Or use regular expressions. <? Php $ S = 'manager Wang of www. bKjia. c0m: 13999312365 Manager Li: 13588958741 '; $ S = preg_replace ('# (d {3}) d {5} (d {3 })#', '$ {1} ***** $ {2}', $ s ); Echo $ s; // Manager Wang: 139 ***** 365 Manager Li: 135 ***** 741 ?>

Replace the character string with an asterisk

The Code is as follows:	Copy code
Function half_replace ($ str ){ $ Len = strlen ($ str)/2; Return substr_replace ($ str, str_repeat ('*', $ len), ceil ($ len)/2), $ len ); } Echo half_replace ('test'), "n", half_replace ('tests'), "n", half_replace ('exceptions ');

Php id card number asterisks

The Code is as follows:	Copy code
Echo strlen ($ idcard) = 15? Substr_replace ($ idcard, "*****", 8, 4) :( strlen ($ idcard) = 18? Substr_replace ($ idcard, "*****",): "bKjia. c0m indicates that the number of digits of the ID card is abnormal! ");