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<?php $a = array( 0 => array() ); var_dump( empty( $a ) ); var_dump( array_filter( $a ) ); var_dump( array_filter( array_map( 'array_filter', $a ) ) ); var_dump( !empty( $a[0] ) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/u3DV5
function name:  (null)
number of ops:  27
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        INIT_FCALL                                               'var_dump'
          2        ISSET_ISEMPTY_CV                                 ~2      !0
          3        SEND_VAL                                                 ~2
          4        DO_ICALL                                                 
    5     5        INIT_FCALL                                               'var_dump'
          6        INIT_FCALL                                               'array_filter'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                         $4      
          9        SEND_VAR                                                 $4
         10        DO_ICALL                                                 
    6    11        INIT_FCALL                                               'var_dump'
         12        INIT_FCALL                                               'array_filter'
         13        INIT_FCALL                                               'array_map'
         14        SEND_VAL                                                 'array_filter'
         15        SEND_VAR                                                 !0
         16        DO_ICALL                                         $6      
         17        SEND_VAR                                                 $6
         18        DO_ICALL                                         $7      
         19        SEND_VAR                                                 $7
         20        DO_ICALL                                                 
    7    21        INIT_FCALL                                               'var_dump'
         22        ISSET_ISEMPTY_DIM_OBJ                         1  ~9      !0, 0
         23        BOOL_NOT                                         ~10     ~9
         24        SEND_VAL                                                 ~10
         25        DO_ICALL                                                 
         26      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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