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<?php $a = [ 'net_sec1' => 'a', 'net_sec2' => 'b', 'net_sec3' => 'c', 'ss_ks_kw' => 'a', ]; $aa = preg_grep('/^net_sec(\d+)$/', $a); var_dump($aa);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/CAN9H
function name:  (null)
number of ops:  10
compiled vars:  !0 = $a, !1 = $aa
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   10     1        INIT_FCALL                                               'preg_grep'
          2        SEND_VAL                                                 '%2F%5Enet_sec%28%5Cd%2B%29%24%2F'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $3      
          5        ASSIGN                                                   !1, $3
   11     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !1
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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