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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 8.5.0


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