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<?php $a = '0'; $b = 'NULL'; var_dump($a == $b); var_dump(is_null($a)); var_dump(is_null($b));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/nEOda
function name:  (null)
number of ops:  15
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '0'
    3     1        ASSIGN                                                   !1, 'NULL'
    5     2        INIT_FCALL                                               'var_dump'
          3        IS_EQUAL                                         ~4      !0, !1
          4        SEND_VAL                                                 ~4
          5        DO_ICALL                                                 
    6     6        INIT_FCALL                                               'var_dump'
          7        TYPE_CHECK                                    2  ~6      !0
          8        SEND_VAL                                                 ~6
          9        DO_ICALL                                                 
    7    10        INIT_FCALL                                               'var_dump'
         11        TYPE_CHECK                                    2  ~8      !1
         12        SEND_VAL                                                 ~8
         13        DO_ICALL                                                 
         14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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