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<?php if (substr('test', 0, 1) === 't');
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 7, Position 2 = 7
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 7
filename:       /in/e41IV
function name:  (null)
number of ops:  8
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'substr'
          1        SEND_VAL                                                 'test'
          2        SEND_VAL                                                 0
          3        SEND_VAL                                                 1
          4        DO_ICALL                                         $0      
          5        IS_IDENTICAL                                             $0, 't'
          6      > JMPZ                                                     ~1, ->7
          7    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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