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<?php $name = 'FOO'; $value = false; putenv("{$name}={$value}"); var_dump(getenv($name)); $value = true; putenv("{$name}={$value}"); var_dump(getenv($name));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/43nh6
function name:  (null)
number of ops:  28
compiled vars:  !0 = $name, !1 = $value
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'FOO'
    4     1        ASSIGN                                                   !1, <false>
    6     2        INIT_FCALL                                               'putenv'
          3        ROPE_INIT                                     3  ~5      !0
          4        ROPE_ADD                                      1  ~5      ~5, '%3D'
          5        ROPE_END                                      2  ~4      ~5, !1
          6        SEND_VAL                                                 ~4
          7        DO_ICALL                                                 
    7     8        INIT_FCALL                                               'var_dump'
          9        INIT_FCALL                                               'getenv'
         10        SEND_VAR                                                 !0
         11        DO_ICALL                                         $8      
         12        SEND_VAR                                                 $8
         13        DO_ICALL                                                 
    9    14        ASSIGN                                                   !1, <true>
   11    15        INIT_FCALL                                               'putenv'
         16        ROPE_INIT                                     3  ~12     !0
         17        ROPE_ADD                                      1  ~12     ~12, '%3D'
         18        ROPE_END                                      2  ~11     ~12, !1
         19        SEND_VAL                                                 ~11
         20        DO_ICALL                                                 
   12    21        INIT_FCALL                                               'var_dump'
         22        INIT_FCALL                                               'getenv'
         23        SEND_VAR                                                 !0
         24        DO_ICALL                                         $15     
         25        SEND_VAR                                                 $15
         26        DO_ICALL                                                 
         27      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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