Simple data anonymization

Simple data anonymization

ex: 王小明 --> 王O明

• Excel: =REPLACE(A2, 2, 1, O)
• PHP: using regular_replace

$string = '王小明';
$pattern = '/^(\X)(\X)(\X+)/u';
$replacement = '$1O$3';
echo preg_replace($pattern, $replacement, $string);

• MySQL: using SUBSTRING

SELECT CONCAT(SUBSTRING_INDEX('王小明', SUBSTRING('王小明', 2, 1), 1), 
SUBSTRING('王小明', 2, 1),
SUBSTRING_INDEX('王小明', SUBSTRING('王小明', 2, 1), -1));

ex: 王小明 --> 王OO

• MySQL: SELECT CONCAT(LEFT("王小明", 1), 'OO')

reference

further reading

• 個資利用與去識別化 - vTaiwan.tw