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<?php $m = [ 'foo' => 'aaa', 'bar' => 'bbb', 'baz' => 'ccc', ]; $v = 'bbb'; var_dump(in_array($v, $m, true)); $v = 'zzz'; var_dump(in_array($v, $m, true));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/0KhIp
function name:  (null)
number of ops:  14
compiled vars:  !0 = $m, !1 = $v
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
    9     1        ASSIGN                                                       !1, 'bbb'
   10     2        INIT_FCALL                                                   'var_dump'
          3        FRAMELESS_ICALL_3                in_array            ~4      !1, !0
          4        OP_DATA                                                      <true>
          5        SEND_VAL                                                     ~4
          6        DO_ICALL                                                     
   12     7        ASSIGN                                                       !1, 'zzz'
   13     8        INIT_FCALL                                                   'var_dump'
          9        FRAMELESS_ICALL_3                in_array            ~7      !1, !0
         10        OP_DATA                                                      <true>
         11        SEND_VAL                                                     ~7
         12        DO_ICALL                                                     
         13      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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