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This article introduces how php hides the middle characters. The content is very detailed. Interested friends can use it for reference. I hope it will be helpful to you.

Php hide the middle characters: 1, through the "function func_substr_replace () {...}" method to hide the middle part of the number; 2, through the "function substr_cut ($user_name) {...}" method to hide the middle and replace with an asterisk.

This article operating environment: windows7 system, PHP7.1 version, DELL G3 computer

How does php hide intermediate characters?

PHP implements partial character hiding

/ * * hide partial string * # this method is mostly used to hide the middle digits of mobile phone number or ID number and bank card number * / function func_substr_replace ($str, $replacement ='*', $start = 1, $length = 3) {$len = mb_strlen ($str,'utf-8'); if ($len > intval ($start+$length)) {$str1 = mb_substr ($str,0,$start,'utf-8') $str2 = mb_substr ($str,intval ($start+$length), NULL,'utf-8');} else {$str1 = mb_substr ($str,0,1,'utf-8'); $str2 = mb_substr ($str,$len-1,1,'utf-8'); $length = $len- 2;} $new_str = $str1; for ($I = 0; $I < $length; $iTunes +) {$new_str. = $replacement } $new_str. = $str2; return $new_str;} / * retains only the beginning and end characters of the string, and hides the formatted name * / function substr_cut ($user_name) {$strlen = mb_strlen ($user_name, 'utf-8') of * @ param string $user_name name * @ return string instead of * in the middle of the two characters. $firstStr = ucfirst (strtolower (mb_substr ($user_name, 0,3, 'utf-8')); $lastStr = strtolower (substr ($user_name,-3)); if ($strlen = = 2) {$hideStr = str_repeat (' *, strlen ($user_name, 'utf-8')-1); $result = $firstStr. $hideStr;} else {$hideStr = substr (str_repeat ("*", $strlen-6), 0,3); $result = $firstStr. $hideStr. $lastStr;} return $result;} about how to hide intermediate characters in php is shared here. I hope the above content can be helpful to you and learn more. If you think the article is good, you can share it for more people to see.

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