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<?php $fileContent = '12em\n1.3 em'; preg_replace('/([0-9,-\.]+)\s*(em)/e', floatval('\1') * 123 . 'em', $fileContent);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/U2CeE
function name:  (null)
number of ops:  10
compiled vars:  !0 = $fileContent
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '12em%5Cn1.3+em'
    3     1        INIT_FCALL                                               'preg_replace'
          2        SEND_VAL                                                 '%2F%28%5B0-9%2C-%5C.%5D%2B%29%5Cs%2A%28em%29%2Fe'
          3        CAST                                          5  ~2      '%5C1'
          4        MUL                                              ~3      ~2, 123
          5        CONCAT                                           ~4      ~3, 'em'
          6        SEND_VAL                                                 ~4
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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