3v4l.org

run code in 500+ PHP versions simultaneously
<?php $db = new PDO('sqlite::memory:', '', '', array(PDO::ATTR_PERSISTENT => true)); $db->beginTransaction(); $st = $db->query('select 1'); echo $st->fetchColumn()."\n"; $db->commit(); //$st = null; $db = new PDO('sqlite::memory:', '', '', array(PDO::ATTR_PERSISTENT => true)); $db->beginTransaction(); $st = $db->query('select 2'); echo $st->fetchColumn()."\n"; $db->commit();
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/iTsHt
function name:  (null)
number of ops:  39
compiled vars:  !0 = $db, !1 = $st
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   NEW                                                  $2      'PDO'
          1        SEND_VAL_EX                                                  'sqlite%3A%3Amemory%3A'
          2        SEND_VAL_EX                                                  ''
          3        SEND_VAL_EX                                                  ''
          4        SEND_VAL_EX                                                  <array>
          5        DO_FCALL                                          0          
          6        ASSIGN                                                       !0, $2
    4     7        INIT_METHOD_CALL                                             !0, 'beginTransaction'
          8        DO_FCALL                                          0          
    5     9        INIT_METHOD_CALL                                             !0, 'query'
         10        SEND_VAL_EX                                                  'select+1'
         11        DO_FCALL                                          0  $6      
         12        ASSIGN                                                       !1, $6
    6    13        INIT_METHOD_CALL                                             !1, 'fetchColumn'
         14        DO_FCALL                                          0  $8      
         15        CONCAT                                               ~9      $8, '%0A'
         16        ECHO                                                         ~9
    7    17        INIT_METHOD_CALL                                             !0, 'commit'
         18        DO_FCALL                                          0          
    9    19        NEW                                                  $11     'PDO'
         20        SEND_VAL_EX                                                  'sqlite%3A%3Amemory%3A'
         21        SEND_VAL_EX                                                  ''
         22        SEND_VAL_EX                                                  ''
         23        SEND_VAL_EX                                                  <array>
         24        DO_FCALL                                          0          
         25        ASSIGN                                                       !0, $11
   10    26        INIT_METHOD_CALL                                             !0, 'beginTransaction'
         27        DO_FCALL                                          0          
   11    28        INIT_METHOD_CALL                                             !0, 'query'
         29        SEND_VAL_EX                                                  'select+2'
         30        DO_FCALL                                          0  $15     
         31        ASSIGN                                                       !1, $15
   12    32        INIT_METHOD_CALL                                             !1, 'fetchColumn'
         33        DO_FCALL                                          0  $17     
         34        CONCAT                                               ~18     $17, '%0A'
         35        ECHO                                                         ~18
   13    36        INIT_METHOD_CALL                                             !0, 'commit'
         37        DO_FCALL                                          0          
         38      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
158.23 ms | 2977 KiB | 13 Q