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<?php echo (int) str_replace(":", "", "12:10");
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/AmBv3
function name:  (null)
number of ops:  8
compiled vars:  none
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   2     0  E >   INIT_FCALL                                               'str_replace'
         1        SEND_VAL                                                 '%3A'
         2        SEND_VAL                                                 ''
         3        SEND_VAL                                                 '12%3A10'
         4        DO_ICALL                                         $0      
         5        CAST                                          4  ~1      $0
         6        ECHO                                                     ~1
         7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.3.0