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<?php $date = new DateTime('2016-03-30'); $month = DateInterval::createFromDateString('1 month'); var_dump(date_sub($date, $month));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Y0Rek
function name:  (null)
number of ops:  16
compiled vars:  !0 = $date, !1 = $month
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   NEW                                              $2      'DateTime'
          1        SEND_VAL_EX                                              '2016-03-30'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $2
    3     4        INIT_STATIC_METHOD_CALL                                  'DateInterval', 'createFromDateString'
          5        SEND_VAL                                                 '1+month'
          6        DO_FCALL                                      0  $5      
          7        ASSIGN                                                   !1, $5
    4     8        INIT_FCALL                                               'var_dump'
          9        INIT_FCALL                                               'date_sub'
         10        SEND_VAR                                                 !0
         11        SEND_VAR                                                 !1
         12        DO_ICALL                                         $7      
         13        SEND_VAR                                                 $7
         14        DO_ICALL                                                 
         15      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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