/** +---------------------------------------------------------- * 将一个字符串部分字符用*替代隐藏 +---------------------------------------------------------- * @param string $string 待转换的字符串 * @param int $bengin 起始位置，从0开始计数，当$type=4时，表示左侧保留长度 * @param int $len 需要转换成*的字符个数，当$type=4时，表示右侧保留长度 * @param int $type 转换类型：0，从左向右隐藏；1，从右向左隐藏；2，从指定字符位置分割前由右向左隐藏；3，从指定字符位置分割后由左向右隐藏；4，保留首末指定字符串 * @param string $glue 分割符 +---------------------------------------------------------- * @return string 处理后的字符串 +---------------------------------------------------------- */function hideStr($string, $bengin = 0, $len = 4, $type = 0, $glue = "@") { if (empty($string)) return false; $array = array(); if ($type == 0 || $type == 1 || $type == 4) { $strlen = $length = mb_strlen($string); while ($strlen) { $array[] = mb_substr($string, 0, 1, "utf8"); $string = mb_substr($string, 1, $strlen, "utf8"); $strlen = mb_strlen($string); } } switch ($type) { case 1: $array = array_reverse($array); for ($i = $bengin; $i < ($bengin + $len); $i++) { if (isset($array[$i])) $array[$i] = "*"; } $string = implode("", array_reverse($array)); break; case 2: $array = explode($glue, $string); $array[0] = hideStr($array[0], $bengin, $len, 1); $string = implode($glue, $array); break; case 3: $array = explode($glue, $string); $array[1] = hideStr($array[1], $bengin, $len, 0); $string = implode($glue, $array); break; case 4: $left = $bengin; $right = $len; $tem = array(); for ($i = 0; $i < ($length - $right); $i++) { if (isset($array[$i])) $tem[] = $i >= $left ? "*" : $array[$i]; } $array = array_chunk(array_reverse($array), $right); $array = array_reverse($array[0]); for ($i = 0; $i < $right; $i++) { $tem[] = $array[$i]; } $string = implode("", $tem); break; default: for ($i = $bengin; $i < ($bengin + $len); $i++) { if (isset($array[$i])) $array[$i] = "*"; } $string = implode("", $array); break; } return $string;} 
