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<?php $datetime = new DateTime('2016-01-01', new DateTimeZone('Europe/Paris')); var_dump($datetime->modify('first day of april')); var_dump($datetime->modify('first day of may'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/hIA89
function name:  (null)
number of ops:  21
compiled vars:  !0 = $datetime
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   NEW                                              $1      'DateTime'
          1        SEND_VAL_EX                                              '2016-01-01'
          2        NEW                                              $2      'DateTimeZone'
          3        SEND_VAL_EX                                              'Europe%2FParis'
          4        DO_FCALL                                      0          
          5        SEND_VAR_NO_REF_EX                                       $2
          6        DO_FCALL                                      0          
          7        ASSIGN                                                   !0, $1
    3     8        INIT_FCALL                                               'var_dump'
          9        INIT_METHOD_CALL                                         !0, 'modify'
         10        SEND_VAL_EX                                              'first+day+of+april'
         11        DO_FCALL                                      0  $6      
         12        SEND_VAR                                                 $6
         13        DO_ICALL                                                 
    4    14        INIT_FCALL                                               'var_dump'
         15        INIT_METHOD_CALL                                         !0, 'modify'
         16        SEND_VAL_EX                                              'first+day+of+may'
         17        DO_FCALL                                      0  $8      
         18        SEND_VAR                                                 $8
         19        DO_ICALL                                                 
         20      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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