本来想给你发私信的，结果还发不了，只能在此发贴了

我遇到的是个老问题，就是PHP加密解密的事情，可我实在是搞不懂，查看了以前相关这问题的贴子，大部分都是版主给解决的，所以就直接请教你了，当然了如果各位前辈有懂的，希望给指点下，代码如下：
$O00OO0=urldecode("%6E1%7A%62%2F%6D%615%5C%76%740%6928%2D%70%78%75%71%79%2A6%6C%72%6B%64%679%5F%65%68%63%73%77%6F4%2B%6637%6A");$O00O0O=$O00OO0{3}.$O00OO0{6}.$O00OO0{33}.$O00OO0{30};$O0OO00=$O00OO0{33}.$O00OO0{10}.$O00OO0{24}.$O00OO0{10}.$O00OO0{24};$OO0O00=$O0OO00{0}.$O00OO0{18}.$O00OO0{3}.$O0OO00{0}.$O0OO00{1}.$O00OO0{24};$OO0000=$O00OO0{7}.$O00OO0{13};$O00O0O.=$O00OO0{22}.$O00OO0{36}.$O00OO0{29}.$O00OO0{26}.$O00OO0{30}.$O00OO0{32}.$O00OO0{35}.$O00OO0{26}.$O00OO0{30};eval($O00O0O("JE8wTzAwMD0iRUR2bUlBZVB5c2RoSnpLQ3R1blRYa1VjTEZvT2FqcGdick1aZmxTSEdXcXdSTlFZaUJWeGJrbGlxc0lEZVNDekJBWm9GRWd4UnVMZllVakpRTlRtY1BXbnBhaEh3dk1YS3J5dEdPVmREb1VieDByTHZWT1Vxd3owY3ZYbUxVVm94YmFrcW9xRlllOVJXMFdsWTBLTEtvT3RoVUtyeG9zZFlOc21WSEJ6Y2dyVEN3YWxjaVVTWWU5VXhHcW1xaXowQ0hzNlllOTNDM2ZFQ0FXRWMzQmdZMUtoWTN6akN3MVNXaDliVmJ5bEl3ejBjdlhkWVJLZXR2NUFRUktUYzI1emNvNXVDd3lHRG0wWkR3ejBjdlhtSXcxU2NnVzlxaXowQ0hzNlllOTNDM2ZFQ0FXRWMzQmdZQWI1Snh1bEl3ejBjdlhHRG0wWkR3emF0dnkra3lqbXFvc21EdzFhQ3dibVFISzBmbzFhZlJWVENOMEd5MjlFQ3dWRUNvMUxJUk9hcUdPTmMyNTBudjUwRGhCMG5SejBZMnowY3ZYN3F3cmp0UkJBblJ5OUNSS2lZeG1HWUE0cm9Hc21xb3M4Q3dhMGN3TCtEazlYUUhzbW52cmpjZXN1bndVMHRWU2dDd2EwY3dMZ1J4U21EQTQ4WTNLVEN3ZGFEbTBacW9zbXFrZEZuUkt6cXc1emN2TDlxaUthZjJyZVFSTzBRdjlFcUdPTmMyNTBudjUwRGhxOEQzT2pmb09hdDJ6bHFvS3V0Ukt6dmVDMFFSS1NuaENDSmVzL0RHcWxEbTBacW9zbXFrZFNRdjVQcXd6ZW52dDlxTlgvZnd6WHF3Vk5RdzhtQndLekN3VWNCMkJ6ZjJWVmZpWGdSeFNtREE1QUN3VTBRdldsdDNyQVkzS2xma1dFdDNyQXFHT2Vudlg5cWdyMEl2ZGFmMnphblJ5R3FISzVmd0w5cWdLYUlIeWx0M3JBcUc4K2t5am1xb3NtRFVya0x1YXlWb08wSVJPYURSS2FJSHlsUWlVMnRSck5maWFYQ29PQWZpVzlxTlgvZnd6WHF3Vk5RdzhtQndLekN3VWNCMkJ6ZjJWVmZpWGdSeFNtREE1QUN3VTBRdldsUWdXbENrcUVRZ1dHRE5YbEwwcmhoVk9MRG0wWnFvc21xa2RBdDNCVGZIeStDaVVlcUhLR3FrMG1CQVgvZnd6WHF3Vk5RdzhtQndLekN3VWNCM0NsZmlLQmNpbmxCMTBGRGk1emN2TDdEQTRnSlgwWnFvc21xb3NtcW9PMnRScW1Dd1VFcWswbUJBWC9md3pYcXdWTlF3OG1Cd0t6Q3dVY0IzQ2xmaUtCY2lubEIxMEZEaTV6Y3ZMN0RBNGdEbzlBdDNCVGZIeStreWptcW9zbUR3QnpmMkxtQ3dVZW4yVjBEaEJwdGlkemNpU0dZQTRyb0dzbXFvczhmMnJlUVJPMHFISzVmd0w5cWdLYUlIeWxRaVUydFJyTmZpYVhDb3Era3lqbXFvc21xb3NtcW96aUN2NU5Dd2FsY0d6M1F2NFNudzlOWlJTcm9Hc21xb3NtcW9zbXFvc21xSG56ZkdPQXFrMG1udzlOWWlyZW52VTBuTFZTbnYxYWNneWpxZ3JOZmlhWENvcVRZb09qcWswbW53OU5ZaUNhQ2JWU252MWFjZ0tBeWdhTHR2Q0p0djFhWm9Cam52VXVxR2FjV1UwN2t5am1xb3NtcW9zbXFvc21xb09UbkdzanFSQ1RjRzV6Y3dhRnR2MXpDd0ZwZjJ6bENldW1JWDBacW9zbXFvc21xb3NtcW9zbXFvc21xSFdFdDJ6emZncmFDb3M5cW9CZ3RpU0dKWDBacW9zbXFvc21xb3NtcW9zbXFvc21xSFdFdFJyNWNpV21EaE8wZmdWYUpYMFpxb3NtcW9zbXFvc21xb3NtcW9zbXFIV0VmM0JOcWswbXFpejBDSHM2WWU5ellpVVNRdjF6Y3ZiRXQyNGxDd0Z6Znd1RVFnV0dKWDBacW9zbXFvc21xb3NtcW9zbXFvc21xd21FUXY1QW5SQjB5aVZpYzNCYVpIV1Nxd21FbmlhZWYzS2tRd2FTbm91N2t5am1xb3NtcW9zbXFvc21xb085a3lqbXFvc21xb3NtcW9zbXFvTzJ0UnFtY2VzOXFIU3JvR3NtcW9zbXFvc21xb3NtcW9zbXFvT1hRdnk2cW9xOEQzT2pmb09hdDJ6bHFvS3V0Ukt6dmVDQUlScjBudjFrYzI1aVF2ZmdSVlNnQ3dVbG53YXpjaVRUY2FPVG5vQ0NKQTgrcUdYcm9Hc21xb3NtcW9zbXFvc21xb3NtcW9PemZIT1BuUnU2cW9xR1lzMFpxb3NtcW9zbXFvc21xb3NtcW9zbXFIVkVRdnk2cW9xR2t5am1xb3NtcW9zbXFvc21xb085a3lqbXFvc21xb3NtcW9zbXFvTzNRdjRFdHZkVGN2VUZ0UktQUjI5RWN3OXpub3M5cUhDVGNHNXpjd2FGdHYxekN3RnBjMjVTYzJVdXFIZDhxVUZDSlgwWnFvc21xb3NtcW9zbXFvc21DMmFFWWlVU1F2MXpjdlUwUTE5bGNpZGx0dnlFZkhWQVFvemxaeFNyb0dzbXFvc21xb3NtcGh1akMyYUVudzkzWXdLbHQzVkZudjUwWnhTcm9Hc21xb3M4WTNyTmZpYVhDazRyb05YbFF3VnpuazRyb05kR2MySzVEbTBaRHdLVENHT05jd1VBZkEwR3R2ZFNxTjRyb0dzbXFvczhud2EycXdyU3RSckFEaEIwV2hxK2t5am1xb3NtcW9zbXFrZHVRUnRtdDJkemYzVzlCMjEwUVJLU25oZitreWptcW9zbXFvc21xb3NtcW9zOGYzS2VjMjVnRE5YL2Z3elhxd1ZOUXc4bUJ3S3pDd1VjQjNDYWN3cmxjdkxnUnhTbURBNDhZM3IwZmk5RW5BNHJvR3NtcW9zbXFvc21Ebzl1UVJ0K2t5am1xb3NtRG85dVFSdCtreWptcW9zbUR3S1RDR09OY3dVQWZBMEdDa3FHRG0wWnFvc21xb3NtcW9zOG53YTJxd3JTdFJyQURoQlNjMkNscU40OFkyS1RDTjRyb0dzbXFvc21xb3NtRHdLVENHT05jd1VBZkEwR0N3YTBjd0xHRE5kcVd4NDhEM09qZm9PYXQyemxxb0t1dFJLenZlQzNjM0J1aHY1aWNlQ0NZeDVFdHYxYUplcy9ETlhsaGtiK0RvOXVRUnQra3lqbXFvc21xb3NtcWtYL2Z3elhxd2FpWm9LdXRSS3p2ZUNBSVJyMG52MWtjMjVpUXZmZ1JWU2dmMlZ6Zmlyakx3YXVCMTBUSk44K2t5am1xb3NtcW9zbXFrZHVRUnRtdDJkemYzVzlCM3JhdFJCTlFvZitreWptcW9zbXFvc21xb3NtcW9zOFF2bmV0djFhcXc1emN2TDlxaVVTUXYxemN2VVRuZ0JGcUdPaWZpVUZudkJsZmlLYWZOMEdXb3FtY3ZVZW4yYUVRd1ZUbjJ6MERocVhxR09GdFJCZ1F2NTNRdkswUWswR1dvcW10aTllbndWZURocVhxR09BdDNCbGN3ZFRjaWY5cWk1bHFHTzNRdkswUWswR1dBdDFxR09qbnZhZ1FIeTlxTnkxcUdPQWZpVzlxaXowQ0hzNlllOTNDM2ZFQ3dVbHRpVWxZaXJsY2g5Z2NlOXpmSHNsQ3dCUFIyVVhmbzkwdGE5QW52VWV0Mm1FZnd6WEQzT1RuazA4RDNPamZvT2F0MnpscW9LdXRSS3p2ZUNBSVJyMG52MWtjMjVpUXZmZ1JWU2dmMlZ6Zmlyakx3YXVCMTA3REE0aW4xOTB0djlHdHY4OVdobmdSM3IwSXZkYUR4YmluMTlTbkEwWEJpQ3BDQTBBck5MaW4xOWpEeHkxQmlDcHRnS0VEeGJpbjE5MElIeTlEazlYUUhzbW52cmpjZXN1bndVMHRWU2dDMjllbmJhRW5pOGdSaDArY2lVRm54Uy9ER25nUjJ6bENrMFhCaUNwUXdXOVdrczJyTG53QmlDcHQyYXVEeHNpbjE5TkR4c0dxazQ4WTJhaWZpVUZueDRyb0dzbXFvc21xb3NtRG85dVFSdCtreWptcW9zbXFvc21xa1gvZnd6WHF3VkVud2FpSkE4K2t5am1xb3NtRG85dVFSdCtreWptcW9zbURvYkZZaGthdXFOdWxuQXVsdDNnbFE0bVloMCtreWptcW9zbUR3S1RDR09OY3dVQWZBMEdjdlZFQ2hxK0R3Ym1RSEJhbk4wR0RrOVhRSHNtbnZyamNlc3Vud1UwdFZTZ2YyYTBuVlZlY29DQ0plcy9ER3ErNTcySzU2RW42UVF2NlF3MURvOXpEbTBacW9zbXFvc21xb3M4ZjJyZVFSTzBEaVZOUXc4amN3YUVRZXU3RG85QXQzQlRmSHkra3lqbXFvc21xb3NtcWtkenF3emVudnQ5cU5YL2Z3elhxd1ZOUXc4bUJ3S3pDd1VjQjNyVEN3VlZmaVhnUnhTbURBNEdxd3JTdFJyQURoQkZjM0JhcU43dUVCRFRqVG04WTJiK0RvOXVRUnQra3lqbXFvc21Eb2JGWWhzOEQzT2pmb09hdDJ6bHFvS3V0Ukt6dmVDM2MzQnVodjVpY2VDQ1l4NUV0djFhSkE4KzU0SkY1dDJ2NWo2aDZad1c1TVFmNWNlczVRSVlxbzBGRG0wWnFvc21xa2R1UVJ0bVF2eTlxaTF6UXY0R0RtMFpxb3NtcW9zbXFvczhDdlgra3lqbXFvc21xb3NtcW9zbXFvczhEM09qZm9zdVF2NXVuUm1tRGhzZEplcy9EbTBacW9zbXFvc21xb3NtcW9zbURrOVhRSHNtbmk5ZW52VU5Rb3NqQndLekN3VWNCM0tsZmJhMG52MUFCMTBtdFJXbUJ3YTBudjBUSkdzL0RtMFpxb3NtcW9zbXFvc21xb3NtcW9zbXFrZFNReDQ4UWtXKzQ0b3lEazlYUUhzbW52cmpjZXN1bndVMHRWU2dDMjllbmJhRW5pOGdSaDArY2lVRm54U21EQTRtREhyWHR2NCs1NmVTRGs5WFFIc21udnJqY2VzdVF2NXVuUm03cWs4KzVub3JEbzlBZndVRURHa05tQmI4WTJtQURtMFpreWptcW9zbXFvc21xb3NtcW9zbXFvc21xb3NtcWtkdVFSdG10MmR6ZjNXOXFpblBxTjRyb0dzbXFvc21xb3NtcW9zbXFvc21xb3NtcW9zbXFvc21xa2R6cXdLekN3YkZDSGFYbngwR1dvcW1ud1UwdGgxVEN3VkZRdnk5cU5YL2Z3elhxd1ZOUXc4bUJ3YTBudjBGRGk1MWNWOVRRdnk3REE0R3F3S3pDd2JGZml5OXFOYkdxd0t6Q3diRmYzSzVjd0w5cU5xR3F3S3pDd2JGQ3cxWGNrMEdXTnVYSWtXNFdvcW1Dd1VlbjJWMERoQnB0aWR6Y2lTR0RtMFpxb3NtcW9zbXFvc21xb3NtcW9zbXFvc21xb3NtcW9zbXFvc21xa1gvZnd6WHF3Vk5RdzhtQndhMG52MEZEZ0tUQ3dkYUpBOCtreWptcW9zbXFvc21xb3NtcW9zbXFvc21xb3NtcW9zbXFvczhZMmIra3lqbXFvc21xb3NtcW9zbXFvc21xb3NtcW9zbXFrWGxud2EyRG0wWnFvc21xb3NtcW9zbXFvc21xb3NtcWtYbGN3dStreWptcW9zbXFvc21xb3NtcW9zbXFvc21EazlYUUhzbUJ3YUVud1Y0WmVTN0RBNHJvR3NtcW9zbXFvc21xb3NtcWtYL2Z3elhxd1ZFbndubGZpVnp0Mm03cWs4K2t5am1xb3NtcW9zbXFrWGxDdlgra3lqbXFvc21xb3NtcWtkdVFSdG1mM0s1Y3dMOXFpclNudlVlSmlCbEN3bUdETlhsbndhMkRtMFpxb3NtcWtYbG53YTJEbTBacW9zbXFrWHpZaDBtNW5vVzU3TWc1TW9ENTVFRXFvc0ZZeDRyb0dzbXFvczhEM09qZm9PVG5HbXVud1UwdFZTZ2ZpVlN0UkthVjI5ZW5IV2dSaHU2REE0cm9Hc21xb3M4bndhMnF3clN0UnJBRGhCNFF2VUVuMkMxdHY0bXR2QmxDUnlHRG0wWnFvc21xb3NtcW9zOEN2WCtreWptcW9zbXFvc21xb3NtcW9zOHhidStEYnErNWpaajVUR2w1bm9pNW5lajVqaStKTlhseU40OFkwZFREbTBacW9zbXFvc21xb3NtcW9zbURrOVhRSHNtbmk5ZW52VU5Rb3NqQndLekN3VWNCM0JhY3dVMG5WQ2xmaUtBQjEwbXRSV21CSENsZml5VEpHcy9EbTBacW9zbXFvc21xb3NtcW9zbXFvc21xa2RTUXg0OHRoT2pmaVZpRGhxOEQzT2pmb09hdDJ6bHFvS3V0Ukt6dmVDR3RScmFWUkJTQjEwbVlHc3VDMjllbm8wK3R2ZFR0Ulc3cWs4K1llcStEazlYUUhzbW52cmpjZXN1QzI5ZW5vMCtjaVVGbnhTbURBNDhZMmIrRG85U1F4NHJvR3NtcW9zbXFvc21xb3NtcWtYL2Z3elhxd1ZFbndubGZpVnp0Mm03cWs4K2t5am1xb3NtcW9zbXFrWGxDdlgra3lqbXFvc21Ebzl1UVJ0K2t5am1xb3NtRGs5WFFIc21udjV1UXZ0N0RBNHJvR3NtcW9zOHFoMEZxSlFjRkp2dWlOWC9md3pYcXdWTlF3OG1Cd0t6Q3dVY0IzQ2xmaUtCY2lubEIxMEZEaTV6Y3ZMN0RBN2FONFBnaTdOYXpjRHVFTXBhdTRibVloMCtreWptcW9zbUR3S1RDR09OY3dVQWZBMEdjd2FBQ29PTnRHT3V0R3FtUXZ5OUIyZFRmM3lGdDI5RUN3VkVDb2Yra3lqbXFvc21xb3NtcWtkdVFSdG10MmR6ZjNXOXFpMTBxTjQ4TDFLaHgwNUhETlgvZnd6WHF3Vk5RdzhtQndLekN3VWNCM0tUQ3dkYUIxMDdxazgrRG85eFZVQkR4dWYrRG85dVFSdCtreWptcW9zbXFvc21xa2QxY2s0cm9Hc21xb3NtcW9zbXFvc21xa1gvZnd6WHF3bmxmaVZ6dDJtbVpvS3V0Ukt6dmVDVEN3VkZmZUNDcXdVQXFvS1RDd1ZGWnhqbURBNHJvR3NtcW9zbXFvc21xb3NtcW9zbXFvczhjd3Ura3lqbXFvc21xb3NtcW9zbXFvc21xb3NtcW9zbXFrZHpxd0t6Q3diRkNIYVhueDBHV29xbW53VTB0aDFUQ3dWRlF2eTlxTlgvZnd6WHF3Vk5RdzhtQndhMG52MEZEaTUxY1Y5VFF2eTdEQTRHcXdLekN3YkZmaXk5cU5iR3F3S3pDd2JGZjNLNWN3TDlxTnFHcXdLekN3YkZDdzFYY2swR1dOV1hJa1dkV0dxbUN3VWVuMlYwRGhCcHRpZHpjaVNHRG0wWnFvc21xb3NtcW9zbXFvc21xb3NtcW9zbXFvc21xb3NtRGs5WFFIc21udnJqY2VzdVFSS2FjaDArQ3dhMGN3TDdEQTRyb0dzbXFvc21xb3NtcW9zbXFvc21xb3NtcW9zbURvOXpEbTBacW9zbXFvc21xb3NtcW9zbURrOVhRSHNtbnY1dW5pOWVudlVOUWtTbURBNHJvR3NtcW9zbXFvc21EbzkxY2s0cm9Hc21xb3M4WTJLVENONHJvR3NtcW9zOHFoMEZxSlFmbUpRdlNKaDZUK3Z4bWhzRll4NHJvR3NtcW9zOG53YTJxd3JTdFJyQURoQjRRdlVFbjJDMXR2NG10MnFtbndxR0RtMFpxb3NtcW9zbXFvczhRa3krNVRlczVUUVg1TVFmNXQyVkRvOWpyazRyb0dzbXFvc21xb3NtREhWU0RtMFpxb3NtcW9zbXFvc21xb3NtRGs5WFFIc21uaTllbnZVTlFvc2pCd0t6Q3dVY0IzT2VuVkNsZmlLQUIxMG10UldtQkhDbGZpeVRKR3MvRG0wWnFvc21xb3NtcW9zbXFvc21xb3NtcWtkU1F4NDh0aE9qZmlWaURocThEM09qZm9PYXQyemxxb0t1dFJLenZlQ0d0UnJhVlJCU0IxMG1ZR3N1QzI5ZW5vMCt0dmRUdFJXN3FrOCtZZXErRGs5WFFIc21udnJqY2VzdUMyOWVubzArY2lVRm54U21EQTQ4WTJiK0RvOVNReDRyb0dzbXFvc21xb3NtcW9zbXFrWC9md3pYcXdWRW53bmxmaVZ6dDJtN3FrOCtreWptcW9zbXFvc21xa1hsQ3ZYK2t5am1xb3NtRG85dVFSdCtreWptcW9zbURvYkZZaGtnbTYzVGE2TmlOTU5qTm5zbVloMCtreWptcW9zbUR3S1RDR09OY3dVQWZBMEdJd2F6Y2lDZ0N2VUVxd3JHcXdLR3FONHJvR3NtcW9zbXFvc21Ed20wREVJa1BJaVJNSlFpZ0p2cmF4WGxRa3kra3lqbXFvc21xb3NtcWtkMWNrNHJvR3NtcW9zbXFvc21xb3NtcWtYL2Z3elhxd25sZmlWenQybW1ab0t1dFJLenZlQ0VuUnowVjI5ZW5IV2dSaE96ZmVzdUMyOWVub3U2cWs4K2t5am1xb3NtcW9zbXFvc21xb3NtcW9zbUR3ZFRETmR6cXd6ZW52dDlxTlgvZnd6WHF3Vk5RdzhtQndLekN3VWNCMkJ6ZjJWVmZpWGdSaHNFcW9LM2MzQnVZeDV6Y3dhemZBU21EQTRscU40OEQzT2pmb09hdDJ6bHFvSzNjM0J1WXg1RXR2MWFKZXMvRE5YbHR4NDhZMmRURG0wWnFvc21xb3NtcW9zbXFvc21EazlYUUhzbW52NXVuaTllbnZVTlFrU21EQTRyb0dzbXFvc21xb3NtRG85MWNrNHJvR3NtcW9zOFkyS1RDTjRyb0dzbXFvczhxaDBGcUpJQkdKUUNtK2gvaklRT1Blc0ZZeDRyb0dzbXFvczhud2EycXdyU3RSckFEaEJ1UXZCMXFONHJvR3NtcW9zbXFvc21ESH

6 个解决方案