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<?php // Everything is associative array in PHP. Ideal question to ask is if it is sequential // Secondly, going through entire list of items in array is unnecessary function isSequentialArray($array) { return !(bool)count(array_filter(array_keys($array), 'is_string')); } var_dump(isSequentialArray([])); // true/undefined var_dump(isSequentialArray(['a'])); // false var_dump(isAssoc([])); // undefined var_dump(isSequentialArray(array(0 => 'a', 1 => 'b'))); // true var_dump(isSequentialArray(array(0 => 'a', 5 => 'b'))); // true var_dump(isSequentialArray(array('a', 'b', 'c'))); // false var_dump(isSequentialArray(array("0" => 'a', "1" => 'b', "2" => 'c'))); // false var_dump(isSequentialArray(array("1" => 'a', "0" => 'b', "2" => 'c'))); // true var_dump(isSequentialArray(array("a" => 'a', "b" => 'b', "c" => 'c'))); // true
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/0aHns
function name:  (null)
number of ops:  55
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   11     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'issequentialarray'
          2        SEND_VAL                                                 <array>
          3        DO_FCALL                                      0  $0      
          4        SEND_VAR                                                 $0
          5        DO_ICALL                                                 
   12     6        INIT_FCALL                                               'var_dump'
          7        INIT_FCALL                                               'issequentialarray'
          8        SEND_VAL                                                 <array>
          9        DO_FCALL                                      0  $2      
         10        SEND_VAR                                                 $2
         11        DO_ICALL                                                 
   13    12        INIT_FCALL                                               'var_dump'
         13        INIT_FCALL_BY_NAME                                       'isAssoc'
         14        SEND_VAL_EX                                              <array>
         15        DO_FCALL                                      0  $4      
         16        SEND_VAR                                                 $4
         17        DO_ICALL                                                 
   15    18        INIT_FCALL                                               'var_dump'
         19        INIT_FCALL                                               'issequentialarray'
         20        SEND_VAL                                                 <array>
         21        DO_FCALL                                      0  $6      
         22        SEND_VAR                                                 $6
         23        DO_ICALL                                                 
   16    24        INIT_FCALL                                               'var_dump'
         25        INIT_FCALL                                               'issequentialarray'
         26        SEND_VAL                                                 <array>
         27        DO_FCALL                                      0  $8      
         28        SEND_VAR                                                 $8
         29        DO_ICALL                                                 
   17    30        INIT_FCALL                                               'var_dump'
         31        INIT_FCALL                                               'issequentialarray'
         32        SEND_VAL                                                 <array>
         33        DO_FCALL                                      0  $10     
         34        SEND_VAR                                                 $10
         35        DO_ICALL                                                 
   18    36        INIT_FCALL                                               'var_dump'
         37        INIT_FCALL                                               'issequentialarray'
         38        SEND_VAL                                                 <array>
         39        DO_FCALL                                      0  $12     
         40        SEND_VAR                                                 $12
         41        DO_ICALL                                                 
   19    42        INIT_FCALL                                               'var_dump'
         43        INIT_FCALL                                               'issequentialarray'
         44        SEND_VAL                                                 <array>
         45        DO_FCALL                                      0  $14     
         46        SEND_VAR                                                 $14
         47        DO_ICALL                                                 
   20    48        INIT_FCALL                                               'var_dump'
         49        INIT_FCALL                                               'issequentialarray'
         50        SEND_VAL                                                 <array>
         51        DO_FCALL                                      0  $16     
         52        SEND_VAR                                                 $16
         53        DO_ICALL                                                 
         54      > RETURN                                                   1

Function issequentialarray:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/0aHns
function name:  isSequentialArray
number of ops:  13
compiled vars:  !0 = $array
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   RECV                                             !0      
    7     1        INIT_FCALL                                               'array_filter'
          2        INIT_FCALL                                               'array_keys'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $1      
          5        SEND_VAR                                                 $1
          6        SEND_VAL                                                 'is_string'
          7        DO_ICALL                                         $2      
          8        COUNT                                            ~3      $2
          9        BOOL                                             ~4      ~3
         10        BOOL_NOT                                         ~5      ~4
         11      > RETURN                                                   ~5
    8    12*     > RETURN                                                   null

End of function issequentialarray

Generated using Vulcan Logic Dumper, using php 8.0.0


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