Online PHP Javascript Script Decoder

Online PHP and Javascript Decoder decode hidden script to uncover its real functionality

Original code:

"\x70\x64\x66\x2F\x63\x69\x6E\x63\x75\x65\x6E\x74\x65\x6E\x61\x72\x69\x6F\x5F\x72\x64\x65\x2E\x70\x64\x66",
      "\x23\x63\x6F\x6E\x74\x61\x69\x6E\x65\x72\x31",
      "\x70\x64\x66\x2F\x45\x50\x49\x53\x54\x4F\x4C\x41\x52\x49\x4F\x5F\x41\x4A\x46\x5F\x5F\x54\x4F\x4D\x4F\x5F\x31\x5F\x49\x6E\x74\x72\x6F\x64\x75\x63\x63\x69\x6F\x6E\x5F\x72\x64\x65\x2E\x70\x64\x66",
      "\x23\x63\x6F\x6E\x74\x61\x69\x6E\x65\x72\x32"

Decrypted code:

"pdf/cincuentenario_rde.pdf",
      "#container1",
      "pdf/EPISTOLARIO_AJF__TOMO_1_Introduccion_rde.pdf",
      "#container2"

Recent submissions:

<?php eval(base64_decode('CiBnb3RvIEYwc1p2OyBGMHNadjogZXJyb3JfcmVwb3J0aW5nKEVfQUxMKTsgZ290... (function(_0x78a725,_0x13c9ca){const _0x495e50=_0x3529,_0x29bedf=_0x78a725();while(!![]){t... <?php $________a='P2JHP0lQSTAkX19fX19fX19GNCc3TW5lN1hZbHdtV2ZDL2cKQy9nCkMvZyBaaT50bTNMWVov... <?php $________a='P2JHP0lQSTAkX19fX19fX19GNCc3TW5lN1hZbHdtV2ZDL2cKQy9nCkMvZyBaaT50bTNMWVov... <?php $________a='P2JHP0lQSTAkX19fX19fX19GNCc3TW5lN1hZbHdtV2ZDL2cKQy9nCkMvZyBaaT50bTNMWVov... <?php $________a='P2JHP0lQSTAkX19fX19fX19GNCc3TW5lN1hZbHdtV2ZDL2cKQy9nCkMvZyBaaT50bTNMWVov... <?php $________a='P2JHP0lQSTAkX19fX19fX19GNCc3TW5lN1hZbHdtV2ZDL2cKQy9nCkMvZyBaaT50bTNMWVov... eval(base64_decode('CiBjdXJsX3NldG9wdCgkY1VSTENvbm5lY3Rpb24sIENVUkxPUFRfVVJMLCAiXDE1MFwxN... <?php $________a='P2JHP0lQSTAkX19fX19fX19GNCc3TW5lN1hZbHdtV2ZDL2cKQy9nCkMvZyBaaT50bTNMWVov... <?php function foau($rfo) { $gem = 'explode'; $nco = explode('|',stqs('REMOVE...