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<?php $today = '2019-03-20 14:27:06'; $dates = [ '2019-03-20 09:03:00', '2019-03-20 15:12:29', '2019-03-20 09:39:11', '2019-03-20 12:58:22', '2019-03-20 19:14:47', '2019-03-21 09:08:38' ]; function getNearestDate(array $dates, ?string $today = null) { if (!$today) { $today = date('Y-m-d H:i:s'); } $fnDT = function($d) { return DateTime::createFromFormat('Y-m-d H:i:s', $d); }; usort($dates, function($a, $b) use ($fnDT, $today) { $da = abs($fnDT($today)->getTimestamp() - $fnDT($a)->getTimestamp()); $db = abs($fnDT($today)->getTimestamp() - $fnDT($b)->getTimestamp()); return $da - $db; }); $nearest = $dates[0]; if ($fnDT($nearest)->format('Y-m-d') !== $fnDT($today)->format('Y-m-d')) { print_r('No date of the same day.'); return false; } return $nearest; } print_r(getNearestDate($dates, $today));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/sboKJ
function name:  (null)
number of ops:  10
compiled vars:  !0 = $today, !1 = $dates
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, '2019-03-20+14%3A27%3A06'
    5     1        ASSIGN                                                       !1, <array>
   40     2        INIT_FCALL                                                   'print_r'
          3        INIT_FCALL                                                   'getnearestdate'
          4        SEND_VAR                                                     !1
          5        SEND_VAR                                                     !0
          6        DO_FCALL                                          0  $4      
          7        SEND_VAR                                                     $4
          8        DO_ICALL                                                     
          9      > RETURN                                                       1

Function getnearestdate:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 8
Branch analysis from position: 4
2 jumps found. (Code = 43) Position 1 = 33, Position 2 = 37
Branch analysis from position: 33
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 37
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
filename:       /in/sboKJ
function name:  getNearestDate
number of ops:  39
compiled vars:  !0 = $dates, !1 = $today, !2 = $fnDT, !3 = $nearest
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   14     0  E >   RECV                                                 !0      
          1        RECV_INIT                                            !1      null
   15     2        BOOL_NOT                                             ~4      !1
          3      > JMPZ                                                         ~4, ->8
   16     4    >   INIT_FCALL                                                   'date'
          5        SEND_VAL                                                     'Y-m-d+H%3Ai%3As'
          6        DO_ICALL                                             $5      
          7        ASSIGN                                                       !1, $5
   19     8    >   DECLARE_LAMBDA_FUNCTION                              ~7      [0]
          9        ASSIGN                                                       !2, ~7
   23    10        INIT_FCALL                                                   'usort'
         11        SEND_REF                                                     !0
         12        DECLARE_LAMBDA_FUNCTION                              ~9      [1]
         13        BIND_LEXICAL                                                 ~9, !2
         14        BIND_LEXICAL                                                 ~9, !1
   28    15        SEND_VAL                                                     ~9
   23    16        DO_ICALL                                                     
   30    17        FETCH_DIM_R                                          ~11     !0, 0
         18        ASSIGN                                                       !3, ~11
   32    19        INIT_DYNAMIC_CALL                                            !2
         20        SEND_VAR_EX                                                  !3
         21        DO_FCALL                                          0  $13     
         22        INIT_METHOD_CALL                                             $13, 'format'
         23        SEND_VAL_EX                                                  'Y-m-d'
         24        DO_FCALL                                          0  $14     
         25        INIT_DYNAMIC_CALL                                            !2
         26        SEND_VAR_EX                                                  !1
         27        DO_FCALL                                          0  $15     
         28        INIT_METHOD_CALL                                             $15, 'format'
         29        SEND_VAL_EX                                                  'Y-m-d'
         30        DO_FCALL                                          0  $16     
         31        IS_NOT_IDENTICAL                                             $14, $16
         32      > JMPZ                                                         ~17, ->37
   33    33    >   INIT_FCALL                                                   'print_r'
         34        SEND_VAL                                                     'No+date+of+the+same+day.'
         35        DO_ICALL                                                     
   34    36      > RETURN                                                       <false>
   37    37    > > RETURN                                                       !3
   38    38*     > RETURN                                                       null


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/sboKJ
function name:  {closure:getNearestDate():19}
number of ops:  7
compiled vars:  !0 = $d
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   19     0  E >   RECV                                                 !0      
   20     1        INIT_STATIC_METHOD_CALL                                      'DateTime', 'createFromFormat'
          2        SEND_VAL                                                     'Y-m-d+H%3Ai%3As'
          3        SEND_VAR                                                     !0
          4        DO_FCALL                                          0  $1      
          5      > RETURN                                                       $1
   21     6*     > RETURN                                                       null

End of Dynamic Function 0

Dynamic Function 1
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/sboKJ
function name:  {closure:getNearestDate():23}
number of ops:  37
compiled vars:  !0 = $a, !1 = $b, !2 = $fnDT, !3 = $today, !4 = $da, !5 = $db
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   23     0  E >   RECV                                                 !0      
          1        RECV                                                 !1      
          2        BIND_STATIC                                                  !2
          3        BIND_STATIC                                                  !3
   24     4        INIT_FCALL                                                   'abs'
          5        INIT_DYNAMIC_CALL                                            !2
          6        SEND_VAR_EX                                                  !3
          7        DO_FCALL                                          0  $6      
          8        INIT_METHOD_CALL                                             $6, 'getTimestamp'
          9        DO_FCALL                                          0  $7      
         10        INIT_DYNAMIC_CALL                                            !2
         11        SEND_VAR_EX                                                  !0
         12        DO_FCALL                                          0  $8      
         13        INIT_METHOD_CALL                                             $8, 'getTimestamp'
         14        DO_FCALL                                          0  $9      
         15        SUB                                                  ~10     $7, $9
         16        SEND_VAL                                                     ~10
         17        DO_ICALL                                             $11     
         18        ASSIGN                                                       !4, $11
   25    19        INIT_FCALL                                                   'abs'
         20        INIT_DYNAMIC_CALL                                            !2
         21        SEND_VAR_EX                                                  !3
         22        DO_FCALL                                          0  $13     
         23        INIT_METHOD_CALL                                             $13, 'getTimestamp'
         24        DO_FCALL                                          0  $14     
         25        INIT_DYNAMIC_CALL                                            !2
         26        SEND_VAR_EX                                                  !1
         27        DO_FCALL                                          0  $15     
         28        INIT_METHOD_CALL                                             $15, 'getTimestamp'
         29        DO_FCALL                                          0  $16     
         30        SUB                                                  ~17     $14, $16
         31        SEND_VAL                                                     ~17
         32        DO_ICALL                                             $18     
         33        ASSIGN                                                       !5, $18
   27    34        SUB                                                  ~20     !4, !5
         35      > RETURN                                                       ~20
   28    36*     > RETURN                                                       null

End of Dynamic Function 1

End of function getnearestdate

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