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<?php $a = "0"; echo "'0' is empty?",empty($a),"\n"; echo "'' == '0'?"; var_dump("" == "0"); echo "FALSE == '' and FALSE == '0'?"; var_dump(FALSE == ""); var_dump(FALSE == "0");
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/GCIve
function name:  (null)
number of ops:  17
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '0'
    3     1        ECHO                                                     '%270%27+is+empty%3F'
          2        ISSET_ISEMPTY_CV                                 ~2      !0
          3        ECHO                                                     ~2
          4        ECHO                                                     '%0A'
    4     5        ECHO                                                     '%27%27+%3D%3D+%270%27%3F'
    5     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAL                                                 <false>
          8        DO_ICALL                                                 
    6     9        ECHO                                                     'FALSE+%3D%3D+%27%27+and+FALSE+%3D%3D+%270%27%3F'
    7    10        INIT_FCALL                                               'var_dump'
         11        SEND_VAL                                                 <true>
         12        DO_ICALL                                                 
    8    13        INIT_FCALL                                               'var_dump'
         14        SEND_VAL                                                 <true>
         15        DO_ICALL                                                 
         16      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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