Home > Article > Backend Development > How to hide middle characters in php
php method to hide the middle characters: 1. Hide the middle part of the numbers through the "function func_substr_replace(){...}" method; 2. Use the "function substr_cut($user_name){...}" method Hide the middle and replace it with an asterisk.
The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer
How to hide the middle characters in php?
PHP implements partial character hiding
/** * 隐藏部分字符串 * # 此方法多用于手机号码或身份证号、银行卡号的中间部分数字的隐藏 */ function func_substr_replace($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; $i++) { $new_str .= $replacement; } $new_str .= $str2; return $new_str; }
/** * 只保留字符串首尾字符,隐藏中间用*代替(两个字符时只显示第一个) * @param string $user_name 姓名 * @return string 格式化后的姓名 */ function substr_cut($user_name){ $strlen = mb_strlen($user_name, 'utf-8'); $firstStr = ucfirst(strtolower(mb_substr($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; }
Recommended learning: "PHP Video Tutorial"
The above is the detailed content of How to hide middle characters in php. For more information, please follow other related articles on the PHP Chinese website!