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<?php $timestamp = '-1'; $dt = DateTime::createFromFormat('U', $timestamp); var_dump($dt->format('U') === $timestamp);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/mT3CX
function name:  (null)
number of ops:  14
compiled vars:  !0 = $timestamp, !1 = $dt
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, '-1'
    4     1        INIT_STATIC_METHOD_CALL                                      'DateTime', 'createFromFormat'
          2        SEND_VAL                                                     'U'
          3        SEND_VAR                                                     !0
          4        DO_FCALL                                          0  $3      
          5        ASSIGN                                                       !1, $3
    5     6        INIT_FCALL                                                   'var_dump'
          7        INIT_METHOD_CALL                                             !1, 'format'
          8        SEND_VAL_EX                                                  'U'
          9        DO_FCALL                                          0  $5      
         10        IS_IDENTICAL                                         ~6      !0, $5
         11        SEND_VAL                                                     ~6
         12        DO_ICALL                                                     
         13      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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