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<?php $a = "0"; echo empty($a),"\n"; var_dump("" == "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/VgOl0
function name:  (null)
number of ops:  14
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '0'
    3     1        ISSET_ISEMPTY_CV                                 ~2      !0
          2        ECHO                                                     ~2
          3        ECHO                                                     '%0A'
    4     4        INIT_FCALL                                               'var_dump'
          5        SEND_VAL                                                 <false>
          6        DO_ICALL                                                 
    5     7        INIT_FCALL                                               'var_dump'
          8        SEND_VAL                                                 <true>
          9        DO_ICALL                                                 
    6    10        INIT_FCALL                                               'var_dump'
         11        SEND_VAL                                                 <true>
         12        DO_ICALL                                                 
         13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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