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Bugs & Features
<?php var_dump(unserialize('a:2:{i:0;s:3:"foo";i:1;s:3:"bar";}')); var_dump(unserialize('a:2:{i:0;s:3:"foo";i:1;s:3:"bar";'));
Finding entry points
Branch analysis from position: 0
Jump found. Position 1 = -2
filename:       /in/PhYHX
function name:  (null)
number of ops:  13
compiled vars:  none
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   2     0  E >   INIT_FCALL                                               'var_dump'
         1        INIT_FCALL                                               'unserialize'
         2        SEND_VAL                                                 'a%3A2%3A%7Bi%3A0%3Bs%3A3%3A%22foo%22%3Bi%3A1%3Bs%3A3%3A%22bar%22%3B%7D'
         3        DO_ICALL                                         $0      
         4        SEND_VAR                                                 $0
         5        DO_ICALL                                                 
   3     6        INIT_FCALL                                               'var_dump'
         7        INIT_FCALL                                               'unserialize'
         8        SEND_VAL                                                 'a%3A2%3A%7Bi%3A0%3Bs%3A3%3A%22foo%22%3Bi%3A1%3Bs%3A3%3A%22bar%22%3B'
         9        DO_ICALL                                         $2      
        10        SEND_VAR                                                 $2
        11        DO_ICALL                                                 
        12      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.2.0