PHP uses the regular expression to replace the display function with an asterisk (*) for the four digits in the middle of the phone number.

PHP uses the regular expression to replace the display function with an asterisk (*) for the four digits in the middle of the phone number.

Because the customer needs to maintain privacy, the mobile phone number cannot be completely displayed on the website, but it cannot be displayed, so many websites think of display but not complete display, in fact, it is very easy to use the asterisk to replace the display part with a regular expression.

Method 1:

Function hidtel ($ phone) {$ IsWhat = preg_match ('/(0 [0-9] {2, 3} [\-]? [2-9] [0-9] {6, 7} [\-]? [0-9]?) /I ', $ phone); // fixed 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 );}}

Method 2:

$ Num = "13966778888" $ str = substr_replace ($ num );

Instance:

$ Phonenum = "13966778888"; echo hidtel ($ phonenum );

Final output: 139 **** 8888

Summary

The above section describes how to use regular expressions to replace and display the four digits in the middle of a mobile phone number with an asterisk (*). I hope this will help you, if you have any questions, please leave a message and the editor will reply to you in time. Thank you very much for your support for the help House website!