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<?php function getFilenameFromUrl($url) { $default = uniqid(); if (!is_string($url) || strpos($url, '/') === false) { return $default; } // Get last part of the url (after the last slash). $parts = explode('/', $url); $filename = array_pop($parts); // Replace special characters with underscores. $filename = preg_replace('/[^a-z0-9\_\-\.]/i', '_', $filename); // Replace multiple underscores with just one. $filename = preg_replace('/__+/i', '_', trim($filename, '_')); // Return the cleaned filename or, if it is empty, a unique id. return $filename ?: $default; } var_dump(getFilenameFromUrl('THIS IS NOT A URL')); var_dump(getFilenameFromUrl('https://example.com/this____or_that______.zip?dlid=asd____a_a_a__b__b__B')); var_dump(getFilenameFromUrl('https://www.some-domain.com/downloads/file.php?file=foobar')); var_dump(getFilenameFromUrl('https://www.some-domain.com/downloads/file.zip?slid=123')); var_dump(getFilenameFromUrl('https://www.some-domain.com/downloads/?file=foobar'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/W0iUJ
function name:  (null)
number of ops:  31
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   21     0  E >   INIT_FCALL                                                   'var_dump'
          1        INIT_FCALL                                                   'getfilenamefromurl'
          2        SEND_VAL                                                     'THIS+IS+NOT+A+URL'
          3        DO_FCALL                                          0  $0      
          4        SEND_VAR                                                     $0
          5        DO_ICALL                                                     
   22     6        INIT_FCALL                                                   'var_dump'
          7        INIT_FCALL                                                   'getfilenamefromurl'
          8        SEND_VAL                                                     'https%3A%2F%2Fexample.com%2Fthis____or_that______.zip%3Fdlid%3Dasd____a_a_a__b__b__B'
          9        DO_FCALL                                          0  $2      
         10        SEND_VAR                                                     $2
         11        DO_ICALL                                                     
   23    12        INIT_FCALL                                                   'var_dump'
         13        INIT_FCALL                                                   'getfilenamefromurl'
         14        SEND_VAL                                                     'https%3A%2F%2Fwww.some-domain.com%2Fdownloads%2Ffile.php%3Ffile%3Dfoobar'
         15        DO_FCALL                                          0  $4      
         16        SEND_VAR                                                     $4
         17        DO_ICALL                                                     
   24    18        INIT_FCALL                                                   'var_dump'
         19        INIT_FCALL                                                   'getfilenamefromurl'
         20        SEND_VAL                                                     'https%3A%2F%2Fwww.some-domain.com%2Fdownloads%2Ffile.zip%3Fslid%3D123'
         21        DO_FCALL                                          0  $6      
         22        SEND_VAR                                                     $6
         23        DO_ICALL                                                     
   25    24        INIT_FCALL                                                   'var_dump'
         25        INIT_FCALL                                                   'getfilenamefromurl'
         26        SEND_VAL                                                     'https%3A%2F%2Fwww.some-domain.com%2Fdownloads%2F%3Ffile%3Dfoobar'
         27        DO_FCALL                                          0  $8      
         28        SEND_VAR                                                     $8
         29        DO_ICALL                                                     
         30      > RETURN                                                       1

Function getfilenamefromurl:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 47) Position 1 = 7, Position 2 = 10
Branch analysis from position: 7
2 jumps found. (Code = 43) Position 1 = 11, Position 2 = 12
Branch analysis from position: 11
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 12
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 10
filename:       /in/W0iUJ
function name:  getFilenameFromUrl
number of ops:  32
compiled vars:  !0 = $url, !1 = $default, !2 = $parts, !3 = $filename
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   RECV                                                 !0      
    5     1        INIT_FCALL                                                   'uniqid'
          2        DO_ICALL                                             $4      
          3        ASSIGN                                                       !1, $4
    6     4        TYPE_CHECK                                       64  ~6      !0
          5        BOOL_NOT                                             ~7      ~6
          6      > JMPNZ_EX                                             ~7      ~7, ->10
          7    >   FRAMELESS_ICALL_2                strpos              ~8      !0, '%2F'
          8        TYPE_CHECK                                        4  ~9      ~8
          9        BOOL                                                 ~7      ~9
         10    > > JMPZ                                                         ~7, ->12
    8    11    > > RETURN                                                       !1
   11    12    >   INIT_FCALL                                                   'explode'
         13        SEND_VAL                                                     '%2F'
         14        SEND_VAR                                                     !0
         15        DO_ICALL                                             $10     
         16        ASSIGN                                                       !2, $10
   12    17        INIT_FCALL                                                   'array_pop'
         18        SEND_REF                                                     !2
         19        DO_ICALL                                             $12     
         20        ASSIGN                                                       !3, $12
   14    21        FRAMELESS_ICALL_3                preg_replace        ~14     '%2F%5B%5Ea-z0-9%5C_%5C-%5C.%5D%2Fi', '_'
         22        OP_DATA                                                      !3
         23        ASSIGN                                                       !3, ~14
   16    24        FRAMELESS_ICALL_2                trim                ~16     !3, '_'
         25        FRAMELESS_ICALL_3                preg_replace        ~17     '%2F__%2B%2Fi', '_'
         26        OP_DATA                                                      ~16
         27        ASSIGN                                                       !3, ~17
   18    28        JMP_SET                                              ~19     !3, ->30
         29        QM_ASSIGN                                            ~19     !1
         30      > RETURN                                                       ~19
   19    31*     > RETURN                                                       null

End of function getfilenamefromurl

Generated using Vulcan Logic Dumper, using php 8.5.0


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