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<?php $level1 = array( 'extensions' => array(), ); $level2 = array( 'extensions' => array( 'subjectAltName' => '', ), ); $level3 = array( 'extensions' => array( 'subjectAltName' => 'foo', ), ); var_dump(!empty($level1['extensions']) && !empty($level1['extensions']['subjectAltName'])); var_dump(!empty($level2['extensions']) && !empty($level2['extensions']['subjectAltName'])); var_dump(!empty($level3['extensions']) && !empty($level3['extensions']['subjectAltName'])); echo '------------', PHP_EOL; var_dump(!empty($level1['extensions']['subjectAltName'])); var_dump(!empty($level2['extensions']['subjectAltName'])); var_dump(!empty($level3['extensions']['subjectAltName']));
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 46) Position 1 = 7, Position 2 = 11
Branch analysis from position: 7
2 jumps found. (Code = 46) Position 1 = 17, Position 2 = 21
Branch analysis from position: 17
2 jumps found. (Code = 46) Position 1 = 27, Position 2 = 31
Branch analysis from position: 27
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 31
Branch analysis from position: 21
Branch analysis from position: 11
filename:       /in/Z1hgQ
function name:  (null)
number of ops:  54
compiled vars:  !0 = $level1, !1 = $level2, !2 = $level3
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    6     1        ASSIGN                                                   !1, <array>
   11     2        ASSIGN                                                   !2, <array>
   17     3        INIT_FCALL                                               'var_dump'
          4        ISSET_ISEMPTY_DIM_OBJ                         1  ~6      !0, 'extensions'
          5        BOOL_NOT                                         ~7      ~6
          6      > JMPZ_EX                                          ~7      ~7, ->11
          7    >   FETCH_DIM_IS                                     ~8      !0, 'extensions'
          8        ISSET_ISEMPTY_DIM_OBJ                         1  ~9      ~8, 'subjectAltName'
          9        BOOL_NOT                                         ~10     ~9
         10        BOOL                                             ~7      ~10
         11    >   SEND_VAL                                                 ~7
         12        DO_ICALL                                                 
   18    13        INIT_FCALL                                               'var_dump'
         14        ISSET_ISEMPTY_DIM_OBJ                         1  ~12     !1, 'extensions'
         15        BOOL_NOT                                         ~13     ~12
         16      > JMPZ_EX                                          ~13     ~13, ->21
         17    >   FETCH_DIM_IS                                     ~14     !1, 'extensions'
         18        ISSET_ISEMPTY_DIM_OBJ                         1  ~15     ~14, 'subjectAltName'
         19        BOOL_NOT                                         ~16     ~15
         20        BOOL                                             ~13     ~16
         21    >   SEND_VAL                                                 ~13
         22        DO_ICALL                                                 
   19    23        INIT_FCALL                                               'var_dump'
         24        ISSET_ISEMPTY_DIM_OBJ                         1  ~18     !2, 'extensions'
         25        BOOL_NOT                                         ~19     ~18
         26      > JMPZ_EX                                          ~19     ~19, ->31
         27    >   FETCH_DIM_IS                                     ~20     !2, 'extensions'
         28        ISSET_ISEMPTY_DIM_OBJ                         1  ~21     ~20, 'subjectAltName'
         29        BOOL_NOT                                         ~22     ~21
         30        BOOL                                             ~19     ~22
         31    >   SEND_VAL                                                 ~19
         32        DO_ICALL                                                 
   20    33        ECHO                                                     '------------'
         34        ECHO                                                     '%0A'
   21    35        INIT_FCALL                                               'var_dump'
         36        FETCH_DIM_IS                                     ~24     !0, 'extensions'
         37        ISSET_ISEMPTY_DIM_OBJ                         1  ~25     ~24, 'subjectAltName'
         38        BOOL_NOT                                         ~26     ~25
         39        SEND_VAL                                                 ~26
         40        DO_ICALL                                                 
   22    41        INIT_FCALL                                               'var_dump'
         42        FETCH_DIM_IS                                     ~28     !1, 'extensions'
         43        ISSET_ISEMPTY_DIM_OBJ                         1  ~29     ~28, 'subjectAltName'
         44        BOOL_NOT                                         ~30     ~29
         45        SEND_VAL                                                 ~30
         46        DO_ICALL                                                 
   23    47        INIT_FCALL                                               'var_dump'
         48        FETCH_DIM_IS                                     ~32     !2, 'extensions'
         49        ISSET_ISEMPTY_DIM_OBJ                         1  ~33     ~32, 'subjectAltName'
         50        BOOL_NOT                                         ~34     ~33
         51        SEND_VAL                                                 ~34
         52        DO_ICALL                                                 
         53      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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