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<?php $d = ['5.7.0', '5.7.0.3', '5.6', '5.6.1']; foreach ($d as $v) { var_dump(version_compare($v, '5.7.0', '<')); }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 2, Position 2 = 12
Branch analysis from position: 2
2 jumps found. (Code = 78) Position 1 = 3, Position 2 = 12
Branch analysis from position: 3
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 12
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 12
filename:       /in/JfHdj
function name:  (null)
number of ops:  14
compiled vars:  !0 = $d, !1 = $v
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1      > FE_RESET_R                                       $3      !0, ->12
          2    > > FE_FETCH_R                                               $3, !1, ->12
    6     3    >   INIT_FCALL                                               'var_dump'
          4        INIT_FCALL                                               'version_compare'
          5        SEND_VAR                                                 !1
          6        SEND_VAL                                                 '5.7.0'
          7        SEND_VAL                                                 '%3C'
          8        DO_ICALL                                         $4      
          9        SEND_VAR                                                 $4
         10        DO_ICALL                                                 
    5    11      > JMP                                                      ->2
         12    >   FE_FREE                                                  $3
    7    13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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