- base64_decode: documentation ( source)
- str_replace: documentation ( source)
- base64_encode: documentation ( source)
<?php
$staff = '途牛年终大促出境长线满减(每满10000减200元)';
echo base64_decode(str_replace(array('77yI', '77yJ', 'KA==', 'KQ=='), array('QA==', 'QA==', 'QA==', 'QA=='), base64_encode($staff)));