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<?php $files1 = array('AAA', 'BBB', 'CcC'); $files2 = array_filter($files1, function ( &$path ) { $path = strtolower($path); return true; }); var_dump($files1, $files2);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/dp6Lt
function name:  (null)
number of ops:  12
compiled vars:  !0 = $files1, !1 = $files2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1        INIT_FCALL                                               'array_filter'
          2        SEND_VAR                                                 !0
          3        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2Fdp6Lt%3A5%240'
    8     4        SEND_VAL                                                 ~3
          5        DO_ICALL                                         $4      
    5     6        ASSIGN                                                   !1, $4
   10     7        INIT_FCALL                                               'var_dump'
          8        SEND_VAR                                                 !0
          9        SEND_VAR                                                 !1
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2Fdp6Lt%3A5%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/dp6Lt
function name:  {closure}
number of ops:  7
compiled vars:  !0 = $path
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   RECV                                             !0      
    6     1        INIT_FCALL                                               'strtolower'
          2        SEND_VAR                                                 !0
          3        DO_ICALL                                         $1      
          4        ASSIGN                                                   !0, $1
    7     5      > RETURN                                                   <true>
    8     6*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2Fdp6Lt%3A5%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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