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<?php $headers = "Content-Type: foo/bar\r\nHost: foo.com\r\n"; print_r(preg_split('/[\r\n]+(?=\S)/', trim($headers), -1, PREG_SPLIT_NO_EMPTY));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/MMM3i
function name:  (null)
number of ops:  14
compiled vars:  !0 = $headers
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'Content-Type%3A+foo%2Fbar%0D%0AHost%3A+foo.com%0D%0A'
    5     1        INIT_FCALL                                               'print_r'
          2        INIT_FCALL                                               'preg_split'
          3        SEND_VAL                                                 '%2F%5B%5Cr%5Cn%5D%2B%28%3F%3D%5CS%29%2F'
          4        INIT_FCALL                                               'trim'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                         $2      
          7        SEND_VAR                                                 $2
          8        SEND_VAL                                                 -1
          9        SEND_VAL                                                 1
         10        DO_ICALL                                         $3      
         11        SEND_VAR                                                 $3
         12        DO_ICALL                                                 
         13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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