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<?php $array = [ ['1923', 'apr', 'a'], ['2001', 'apr', 'a'], ['2010', 'apr', 'a'], ['1956', 'apr', 'a'], ['1923', 'apr', 'a'], ['2001', 'apr', 'a'], ['2001', 'apr', 'a'], ]; var_dump(array_count_values(array_column($array, 0)));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9L157
function name:  (null)
number of ops:  12
compiled vars:  !0 = $array
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   13     1        INIT_FCALL                                               'var_dump'
          2        INIT_FCALL                                               'array_count_values'
          3        INIT_FCALL                                               'array_column'
          4        SEND_VAR                                                 !0
          5        SEND_VAL                                                 0
          6        DO_ICALL                                         $2      
          7        SEND_VAR                                                 $2
          8        DO_ICALL                                         $3      
          9        SEND_VAR                                                 $3
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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