3v4l.org

run code in 300+ PHP versions simultaneously
<?php $date = new DateTime('2000-12-31'); $date->add(new DateInterval('P1M')); var_dump($date->format('Y-m-d')); $date->add(new DateInterval('P1M')); var_dump($date->format('Y-m-d'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/EmW9M
function name:  (null)
number of ops:  29
compiled vars:  !0 = $date
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $1      'DateTime'
          1        SEND_VAL_EX                                              '2000-12-31'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $1
    4     4        INIT_METHOD_CALL                                         !0, 'add'
          5        NEW                                              $4      'DateInterval'
          6        SEND_VAL_EX                                              'P1M'
          7        DO_FCALL                                      0          
          8        SEND_VAR_NO_REF_EX                                       $4
          9        DO_FCALL                                      0          
    5    10        INIT_FCALL                                               'var_dump'
         11        INIT_METHOD_CALL                                         !0, 'format'
         12        SEND_VAL_EX                                              'Y-m-d'
         13        DO_FCALL                                      0  $7      
         14        SEND_VAR                                                 $7
         15        DO_ICALL                                                 
    7    16        INIT_METHOD_CALL                                         !0, 'add'
         17        NEW                                              $9      'DateInterval'
         18        SEND_VAL_EX                                              'P1M'
         19        DO_FCALL                                      0          
         20        SEND_VAR_NO_REF_EX                                       $9
         21        DO_FCALL                                      0          
    8    22        INIT_FCALL                                               'var_dump'
         23        INIT_METHOD_CALL                                         !0, 'format'
         24        SEND_VAL_EX                                              'Y-m-d'
         25        DO_FCALL                                      0  $12     
         26        SEND_VAR                                                 $12
         27        DO_ICALL                                                 
         28      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
151.01 ms | 1395 KiB | 15 Q