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<?php $formData = array(); echo 'empty($formData[chain_id]): '; var_dump(empty($formData['chain_id'])); echo "\n"; echo '$formData[chain_id] === \'0\': '; var_dump($formData['chain_id'] === '0'); echo "\n"; $formData['chain_id'] = 0; echo 'empty($formData[chain_id]): '; var_dump(empty($formData['chain_id'])); echo "\n"; echo '$formData[chain_id] === \'0\': '; var_dump($formData['chain_id'] === '0'); echo "\n"; $formData['chain_id'] = 1; echo 'empty($formData[chain_id]): '; var_dump(empty($formData['chain_id'])); echo "\n"; echo '$formData[chain_id] === \'0\': '; var_dump($formData['chain_id'] === '0'); echo "\n";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/B89FO
function name:  (null)
number of ops:  45
compiled vars:  !0 = $formData
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ECHO                                                     'empty%28%24formData%5Bchain_id%5D%29%3A+'
    5     2        INIT_FCALL                                               'var_dump'
          3        ISSET_ISEMPTY_DIM_OBJ                         1  ~2      !0, 'chain_id'
          4        SEND_VAL                                                 ~2
          5        DO_ICALL                                                 
    6     6        ECHO                                                     '%0A'
    7     7        ECHO                                                     '%24formData%5Bchain_id%5D+%3D%3D%3D+%270%27%3A+'
    8     8        INIT_FCALL                                               'var_dump'
          9        FETCH_DIM_R                                      ~4      !0, 'chain_id'
         10        IS_IDENTICAL                                     ~5      ~4, '0'
         11        SEND_VAL                                                 ~5
         12        DO_ICALL                                                 
    9    13        ECHO                                                     '%0A'
   11    14        ASSIGN_DIM                                               !0, 'chain_id'
         15        OP_DATA                                                  0
   12    16        ECHO                                                     'empty%28%24formData%5Bchain_id%5D%29%3A+'
   13    17        INIT_FCALL                                               'var_dump'
         18        ISSET_ISEMPTY_DIM_OBJ                         1  ~8      !0, 'chain_id'
         19        SEND_VAL                                                 ~8
         20        DO_ICALL                                                 
   14    21        ECHO                                                     '%0A'
   15    22        ECHO                                                     '%24formData%5Bchain_id%5D+%3D%3D%3D+%270%27%3A+'
   16    23        INIT_FCALL                                               'var_dump'
         24        FETCH_DIM_R                                      ~10     !0, 'chain_id'
         25        IS_IDENTICAL                                     ~11     ~10, '0'
         26        SEND_VAL                                                 ~11
         27        DO_ICALL                                                 
   17    28        ECHO                                                     '%0A'
   19    29        ASSIGN_DIM                                               !0, 'chain_id'
         30        OP_DATA                                                  1
   20    31        ECHO                                                     'empty%28%24formData%5Bchain_id%5D%29%3A+'
   21    32        INIT_FCALL                                               'var_dump'
         33        ISSET_ISEMPTY_DIM_OBJ                         1  ~14     !0, 'chain_id'
         34        SEND_VAL                                                 ~14
         35        DO_ICALL                                                 
   22    36        ECHO                                                     '%0A'
   23    37        ECHO                                                     '%24formData%5Bchain_id%5D+%3D%3D%3D+%270%27%3A+'
   24    38        INIT_FCALL                                               'var_dump'
         39        FETCH_DIM_R                                      ~16     !0, 'chain_id'
         40        IS_IDENTICAL                                     ~17     ~16, '0'
         41        SEND_VAL                                                 ~17
         42        DO_ICALL                                                 
   25    43        ECHO                                                     '%0A'
         44      > RETURN                                                   1

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