3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump( 0x001fffffffffffff ); // float 9.007199254741E+15 var_dump( (int) 0x001fffffffffffff); // int -1
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/GPJLa
function name:  (null)
number of ops:  8
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'var_dump'
          1        SEND_VAL                                                 9007199254740991
          2        DO_ICALL                                                 
    4     3        INIT_FCALL                                               'var_dump'
          4        CAST                                          4  ~1      9007199254740991
          5        SEND_VAL                                                 ~1
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
154.48 ms | 1393 KiB | 15 Q