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run code in 200+ php & hhvm versions
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<?php $v = bcmul('1024.34', '0.12', 10); $x = 1024.11 * 0.21; echo serialize($v); echo serialize($x);
based on OqJ6E
Finding entry points
Branch analysis from position: 0
Jump found. Position 1 = -2
filename:       /in/Q7rcG
function name:  (null)
number of ops:  16
compiled vars:  !0 = $v, !1 = $x
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   INIT_FCALL_BY_NAME                                       'bcmul'
         1        SEND_VAL_EX                                              '1024.34'
         2        SEND_VAL_EX                                              '0.12'
         3        SEND_VAL_EX                                              10
         4        DO_FCALL                                      0  $2      
         5        ASSIGN                                                   !0, $2
   4     6        ASSIGN                                                   !1, 215.063
   6     7        INIT_FCALL                                               'serialize'
         8        SEND_VAR                                                 !0
         9        DO_ICALL                                         $5      
        10        ECHO                                                     $5
   7    11        INIT_FCALL                                               'serialize'
        12        SEND_VAR                                                 !1
        13        DO_ICALL                                         $6      
        14        ECHO                                                     $6
        15      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.1.0