3v4l.org

run code in 300+ PHP versions simultaneously
<?php $cd = new DateTime('2015-03-31'); echo "cd: " . $cd->format( 'Y-m-d' ) . "\n"; $cd->modify('previous month'); echo "cd: " . $cd->format( 'Y-m-d' ) . "\n";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9Upld
function name:  (null)
number of ops:  20
compiled vars:  !0 = $cd
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   NEW                                              $1      'DateTime'
          1        SEND_VAL_EX                                              '2015-03-31'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $1
    6     4        INIT_METHOD_CALL                                         !0, 'format'
          5        SEND_VAL_EX                                              'Y-m-d'
          6        DO_FCALL                                      0  $4      
          7        CONCAT                                           ~5      'cd%3A+', $4
          8        CONCAT                                           ~6      ~5, '%0A'
          9        ECHO                                                     ~6
    8    10        INIT_METHOD_CALL                                         !0, 'modify'
         11        SEND_VAL_EX                                              'previous+month'
         12        DO_FCALL                                      0          
   10    13        INIT_METHOD_CALL                                         !0, 'format'
         14        SEND_VAL_EX                                              'Y-m-d'
         15        DO_FCALL                                      0  $8      
         16        CONCAT                                           ~9      'cd%3A+', $8
         17        CONCAT                                           ~10     ~9, '%0A'
         18        ECHO                                                     ~10
         19      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
176.31 ms | 1393 KiB | 13 Q