3v4l.org

run code in 300+ PHP versions simultaneously
<?php $doc = new DOMDocument; $docEl = $doc->appendChild($doc->createElement('foo')); echo memory_get_usage() . "\n"; $docEl->appendChild($doc->createElement('foo')); echo memory_get_usage() . "\n"; $docEl->appendChild($doc->createElement('foo')); echo memory_get_usage() . "\n"; $docEl->appendChild($doc->createElement('foo')); echo memory_get_usage() . "\n"; $docEl->appendChild($doc->createElement('foo')); echo memory_get_usage() . "\n"; $docEl->appendChild($doc->createElement('foo')); echo memory_get_usage() . "\n";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9D9F9
function name:  (null)
number of ops:  65
compiled vars:  !0 = $doc, !1 = $docEl
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $2      'DOMDocument'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $2
    4     3        INIT_METHOD_CALL                                         !0, 'appendChild'
          4        INIT_METHOD_CALL                                         !0, 'createElement'
          5        SEND_VAL_EX                                              'foo'
          6        DO_FCALL                                      0  $5      
          7        SEND_VAR_NO_REF_EX                                       $5
          8        DO_FCALL                                      0  $6      
          9        ASSIGN                                                   !1, $6
    5    10        INIT_FCALL                                               'memory_get_usage'
         11        DO_ICALL                                         $8      
         12        CONCAT                                           ~9      $8, '%0A'
         13        ECHO                                                     ~9
    6    14        INIT_METHOD_CALL                                         !1, 'appendChild'
         15        INIT_METHOD_CALL                                         !0, 'createElement'
         16        SEND_VAL_EX                                              'foo'
         17        DO_FCALL                                      0  $10     
         18        SEND_VAR_NO_REF_EX                                       $10
         19        DO_FCALL                                      0          
    7    20        INIT_FCALL                                               'memory_get_usage'
         21        DO_ICALL                                         $12     
         22        CONCAT                                           ~13     $12, '%0A'
         23        ECHO                                                     ~13
    8    24        INIT_METHOD_CALL                                         !1, 'appendChild'
         25        INIT_METHOD_CALL                                         !0, 'createElement'
         26        SEND_VAL_EX                                              'foo'
         27        DO_FCALL                                      0  $14     
         28        SEND_VAR_NO_REF_EX                                       $14
         29        DO_FCALL                                      0          
    9    30        INIT_FCALL                                               'memory_get_usage'
         31        DO_ICALL                                         $16     
         32        CONCAT                                           ~17     $16, '%0A'
         33        ECHO                                                     ~17
   10    34        INIT_METHOD_CALL                                         !1, 'appendChild'
         35        INIT_METHOD_CALL                                         !0, 'createElement'
         36        SEND_VAL_EX                                              'foo'
         37        DO_FCALL                                      0  $18     
         38        SEND_VAR_NO_REF_EX                                       $18
         39        DO_FCALL                                      0          
   11    40        INIT_FCALL                                               'memory_get_usage'
         41        DO_ICALL                                         $20     
         42        CONCAT                                           ~21     $20, '%0A'
         43        ECHO                                                     ~21
   12    44        INIT_METHOD_CALL                                         !1, 'appendChild'
         45        INIT_METHOD_CALL                                         !0, 'createElement'
         46        SEND_VAL_EX                                              'foo'
         47        DO_FCALL                                      0  $22     
         48        SEND_VAR_NO_REF_EX                                       $22
         49        DO_FCALL                                      0          
   13    50        INIT_FCALL                                               'memory_get_usage'
         51        DO_ICALL                                         $24     
         52        CONCAT                                           ~25     $24, '%0A'
         53        ECHO                                                     ~25
   14    54        INIT_METHOD_CALL                                         !1, 'appendChild'
         55        INIT_METHOD_CALL                                         !0, 'createElement'
         56        SEND_VAL_EX                                              'foo'
         57        DO_FCALL                                      0  $26     
         58        SEND_VAR_NO_REF_EX                                       $26
         59        DO_FCALL                                      0          
   15    60        INIT_FCALL                                               'memory_get_usage'
         61        DO_ICALL                                         $28     
         62        CONCAT                                           ~29     $28, '%0A'
         63        ECHO                                                     ~29
         64      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
141.87 ms | 1400 KiB | 15 Q