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<?php $a = isset( $post->post_type ); var_dump( $a );
based on HROPc
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/LdBVV
function name:  (null)
number of ops:  6
compiled vars:  !0 = $a, !1 = $post
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   ISSET_ISEMPTY_PROP_OBJ                           ~2      !1, 'post_type'
         1        QM_ASSIGN                                                !0
   4     2        INIT_FCALL                                               'var_dump'
         3        SEND_VAR                                                 !0
         4        DO_ICALL                                                 
         5      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.4.0