3v4l.org

run code in 300+ PHP versions simultaneously
<?php $dowISO = 7; $weekdayISO = (new DateTime('Monday')) ->add(new DateInterval('P' . ($dowISO - 1) . 'D')); echo $dowISO . ' = ' . $weekdayISO->format('l');
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5uLOL
function name:  (null)
number of ops:  21
compiled vars:  !0 = $dowISO, !1 = $weekdayISO
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 7
    4     1        NEW                                              $3      'DateTime'
          2        SEND_VAL_EX                                              'Monday'
          3        DO_FCALL                                      0          
    5     4        INIT_METHOD_CALL                                         $3, 'add'
          5        NEW                                              $5      'DateInterval'
          6        SUB                                              ~6      !0, 1
          7        CONCAT                                           ~7      'P', ~6
          8        CONCAT                                           ~8      ~7, 'D'
          9        SEND_VAL_EX                                              ~8
         10        DO_FCALL                                      0          
         11        SEND_VAR_NO_REF_EX                                       $5
         12        DO_FCALL                                      0  $10     
    4    13        ASSIGN                                                   !1, $10
    7    14        CONCAT                                           ~12     !0, '+%3D+'
         15        INIT_METHOD_CALL                                         !1, 'format'
         16        SEND_VAL_EX                                              'l'
         17        DO_FCALL                                      0  $13     
         18        CONCAT                                           ~14     ~12, $13
         19        ECHO                                                     ~14
         20      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
143.88 ms | 1007 KiB | 13 Q