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<?php $match = preg_replace('/(?<=^|[\x09\x20\x2D])./e', 'strtoupper("\0")', "Test test1"); var_dump($match); $match = preg_replace_callback('/(?<=^|[\x09\x20\x2D])./', function($matches) {return strtoupper($matches[0]);}, "Test test1"); var_dump($match);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/sPaPt
function name:  (null)
number of ops:  20
compiled vars:  !0 = $match
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'preg_replace'
          1        SEND_VAL                                                 '%2F%28%3F%3C%3D%5E%7C%5B%5Cx09%5Cx20%5Cx2D%5D%29.%2Fe'
          2        SEND_VAL                                                 'strtoupper%28%22%5C0%22%29'
          3        SEND_VAL                                                 'Test%09test1'
          4        DO_ICALL                                         $1      
          5        ASSIGN                                                   !0, $1
    4     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                                 
    7     9        INIT_FCALL                                               'preg_replace_callback'
         10        SEND_VAL                                                 '%2F%28%3F%3C%3D%5E%7C%5B%5Cx09%5Cx20%5Cx2D%5D%29.%2F'
         11        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FsPaPt%3A7%240'
         12        SEND_VAL                                                 ~4
         13        SEND_VAL                                                 'Test%09test1'
         14        DO_ICALL                                         $5      
         15        ASSIGN                                                   !0, $5
    8    16        INIT_FCALL                                               'var_dump'
         17        SEND_VAR                                                 !0
         18        DO_ICALL                                                 
         19      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FsPaPt%3A7%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/sPaPt
function name:  {closure}
number of ops:  7
compiled vars:  !0 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   RECV                                             !0      
          1        INIT_FCALL                                               'strtoupper'
          2        FETCH_DIM_R                                      ~1      !0, 0
          3        SEND_VAL                                                 ~1
          4        DO_ICALL                                         $2      
          5      > RETURN                                                   $2
          6*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FsPaPt%3A7%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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