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<?php error_reporting(-1); function myCheckA($in) { return isset($in); } function myCheck($in) { global $$in; return isset($$in); } $var1='Something'; $var2='var1'; echo 'Set: ' . isset($$var2), "\n"; $var2='nope'; echo 'Set: ' . isset($$var2), "\n"; $var2='var1'; echo 'Set: ' . myCheck($$var2), "\n"; $var2='nope'; echo 'Set: ' . myCheck($$var2), "\n"; ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7oiRS
function name:  (null)
number of ops:  31
compiled vars:  !0 = $var1, !1 = $var2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'error_reporting'
          1        SEND_VAL                                                 -1
          2        DO_ICALL                                                 
   16     3        ASSIGN                                                   !0, 'Something'
   18     4        ASSIGN                                                   !1, 'var1'
   19     5        ISSET_ISEMPTY_VAR                             4  ~5      !1
          6        CONCAT                                           ~6      'Set%3A+', ~5
          7        ECHO                                                     ~6
          8        ECHO                                                     '%0A'
   20     9        ASSIGN                                                   !1, 'nope'
   21    10        ISSET_ISEMPTY_VAR                             4  ~8      !1
         11        CONCAT                                           ~9      'Set%3A+', ~8
         12        ECHO                                                     ~9
         13        ECHO                                                     '%0A'
   24    14        ASSIGN                                                   !1, 'var1'
   25    15        INIT_FCALL                                               'mycheck'
         16        FETCH_R                      local               ~11     !1
         17        SEND_VAL                                                 ~11
         18        DO_FCALL                                      0  $12     
         19        CONCAT                                           ~13     'Set%3A+', $12
         20        ECHO                                                     ~13
         21        ECHO                                                     '%0A'
   26    22        ASSIGN                                                   !1, 'nope'
   27    23        INIT_FCALL                                               'mycheck'
         24        FETCH_R                      local               ~15     !1
         25        SEND_VAL                                                 ~15
         26        DO_FCALL                                      0  $16     
         27        CONCAT                                           ~17     'Set%3A+', $16
         28        ECHO                                                     ~17
         29        ECHO                                                     '%0A'
   30    30      > RETURN                                                   1

Function mychecka:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7oiRS
function name:  myCheckA
number of ops:  4
compiled vars:  !0 = $in
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   RECV                                             !0      
    7     1        ISSET_ISEMPTY_CV                                 ~1      !0
          2      > RETURN                                                   ~1
    8     3*     > RETURN                                                   null

End of function mychecka

Function mycheck:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7oiRS
function name:  myCheck
number of ops:  7
compiled vars:  !0 = $in
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   10     0  E >   RECV                                             !0      
   12     1        FETCH_W                      global lock         $1      !0
          2        FETCH_W                      local               $2      !0
          3        ASSIGN_REF                                               $2, $1
   13     4        ISSET_ISEMPTY_VAR                             4  ~3      !0
          5      > RETURN                                                   ~3
   14     6*     > RETURN                                                   null

End of function mycheck

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