3v4l.org

run code in 300+ PHP versions simultaneously
<?php $hashes = array(); $collisions = 0; for($i=0; $i < 60000; $i++){ $hash = hash("crc32", $i); if (in_array($hash, $hashes)) { $collisions++; } } echo $collisions; ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 16
Branch analysis from position: 16
2 jumps found. (Code = 44) Position 1 = 18, Position 2 = 4
Branch analysis from position: 18
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 4
2 jumps found. (Code = 43) Position 1 = 14, Position 2 = 15
Branch analysis from position: 14
2 jumps found. (Code = 44) Position 1 = 18, Position 2 = 4
Branch analysis from position: 18
Branch analysis from position: 4
Branch analysis from position: 15
filename:       /in/2WUKi
function name:  (null)
number of ops:  20
compiled vars:  !0 = $hashes, !1 = $collisions, !2 = $i, !3 = $hash
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN                                                   !1, 0
    6     2        ASSIGN                                                   !2, 0
          3      > JMP                                                      ->16
    7     4    >   INIT_FCALL                                               'hash'
          5        SEND_VAL                                                 'crc32'
          6        SEND_VAR                                                 !2
          7        DO_ICALL                                         $7      
          8        ASSIGN                                                   !3, $7
    8     9        INIT_FCALL                                               'in_array'
         10        SEND_VAR                                                 !3
         11        SEND_VAR                                                 !0
         12        DO_ICALL                                         $9      
         13      > JMPZ                                                     $9, ->15
    9    14    >   PRE_INC                                                  !1
    6    15    >   PRE_INC                                                  !2
         16    >   IS_SMALLER                                               !2, 60000
         17      > JMPNZ                                                    ~12, ->4
   13    18    >   ECHO                                                     !1
   15    19      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
156.97 ms | 1399 KiB | 17 Q