这是什么编码
ddw4nzeymdk0mzq7ddw7bdxppde%2boz47bdx0pdtspgk8mj47atw4pjs%2bo2w8ddxwpha8bdxuzxh0oz47bdwymde0ltiwmtxnrkzkuidlrabmnj87pj47pjs7pjt0pdtspgk8md47pjtsphq8o2w8atwwpjtppde%2bo2k8mj47pjtsphq8cdxwpgw8sg9yaxpvbnrhbefsawduo18hu0i7pjtspfn5c3rlbs5xzwiuvukuv2viq29udhjvbhmusg9yaxpvbnrhbefsawdulcbtexn0zw0uv2vilcbwzxjzaw9upteumc41mdawljasien1bhr1cmu9bmv1dhjhbcwguhvibgljs2v5vg9rzw49yjazzjvmn2yxmwq1mgezytxsawdodd47atw2ntuznj47pj47pjs7pjt0pha8cdxspehvcml6b250ywxbbglnbjtfivncoz47bdw1mdxdzw50zxi%2bo2k8nju1mzy%2boz4%2boz47oz47ddxwpha8bdxib3jpem9udgfsqwxpz247xyftqjs%2bo2w8nta8tgvmdd47atw2ntuznj47pj47pjs7pjs%2bpjs%2bpjs%2bpjs%2bpjtspdixoziyozizozi0ozi1ozi2ozi3ozi4ozi5ozmwozmxozmyozmzozm0ozm1ozm2ozm3ozm4oz4%2bzelol0gk3ajykwxnzbe4hxwmw3y%3d  
------解决方案--------------------
echo base64_decode(urldecode($s));