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<?php var_dump(mb_split('-', 'e-a')); //works fine on any version var_dump(mb_split('-', 'é-a')); // works if string is UTF8 encoded // return "false" with an ISO encoded string on PHP 7.2.18
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/QqYjC
function name:  (null)
number of ops:  15
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                                   'var_dump'
          1        INIT_FCALL                                                   'mb_split'
          2        SEND_VAL                                                     '-'
          3        SEND_VAL                                                     'e-a'
          4        DO_ICALL                                             $0      
          5        SEND_VAR                                                     $0
          6        DO_ICALL                                                     
    6     7        INIT_FCALL                                                   'var_dump'
          8        INIT_FCALL                                                   'mb_split'
          9        SEND_VAL                                                     '-'
         10        SEND_VAL                                                     '%C3%A9-a'
         11        DO_ICALL                                             $2      
         12        SEND_VAR                                                     $2
         13        DO_ICALL                                                     
    8    14      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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