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<?php $arr = array( "0"=>array("0"=>"joe", "1"=>"2018-07-18 09:00:00"), "1"=>array("0"=>"tom", "1"=>"2018-07-17 09:00:00"), "2"=>array("0"=>"joe", "1"=>"2018-07-14 09:00:00"), "3"=>array("0"=>"sam", "1"=>"2018-07-19 09:00:00"), ); usort($arr, function($a, $b) { return $a[1] <=> $b[1]; }); $joes = array_intersect(array_column($arr, 0), ["joe"]); $current = max(array_keys($joes)); Unset($arr[$current]); Var_dump($arr);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/mah6K
function name:  (null)
number of ops:  27
compiled vars:  !0 = $arr, !1 = $joes, !2 = $current
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
   11     1        INIT_FCALL                                                   'usort'
          2        SEND_REF                                                     !0
          3        DECLARE_LAMBDA_FUNCTION                              ~4      [0]
   13     4        SEND_VAL                                                     ~4
   11     5        DO_ICALL                                                     
   15     6        INIT_FCALL                                                   'array_intersect'
          7        INIT_FCALL                                                   'array_column'
          8        SEND_VAR                                                     !0
          9        SEND_VAL                                                     0
         10        DO_ICALL                                             $6      
         11        SEND_VAR                                                     $6
         12        SEND_VAL                                                     <array>
         13        DO_ICALL                                             $7      
         14        ASSIGN                                                       !1, $7
   17    15        INIT_FCALL                                                   'max'
         16        INIT_FCALL                                                   'array_keys'
         17        SEND_VAR                                                     !1
         18        DO_ICALL                                             $9      
         19        SEND_VAR                                                     $9
         20        DO_ICALL                                             $10     
         21        ASSIGN                                                       !2, $10
   18    22        UNSET_DIM                                                    !0, !2
   20    23        INIT_FCALL                                                   'var_dump'
         24        SEND_VAR                                                     !0
         25        DO_ICALL                                                     
         26      > RETURN                                                       1


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/mah6K
function name:  {closure:/in/mah6K:11}
number of ops:  7
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   11     0  E >   RECV                                                 !0      
          1        RECV                                                 !1      
   12     2        FETCH_DIM_R                                          ~2      !0, 1
          3        FETCH_DIM_R                                          ~3      !1, 1
          4        SPACESHIP                                            ~4      ~2, ~3
          5      > RETURN                                                       ~4
   13     6*     > RETURN                                                       null

End of Dynamic Function 0

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