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<?php $memory = memory_get_peak_usage(TRUE); $foo = 'foo'; $foo .= 'bar'; $foo .= 'baz'; echo memory_get_peak_usage(TRUE) - $memory, PHP_EOL; $memory = memory_get_peak_usage(TRUE); $foo = implode('', ['foo', 'bar', 'baz']); echo memory_get_peak_usage(TRUE) - $memory, PHP_EOL;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/dBoUE
function name:  (null)
number of ops:  29
compiled vars:  !0 = $memory, !1 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'memory_get_peak_usage'
          1        SEND_VAL                                                 <true>
          2        DO_ICALL                                         $2      
          3        ASSIGN                                                   !0, $2
    4     4        ASSIGN                                                   !1, 'foo'
    5     5        ASSIGN_OP                                     8          !1, 'bar'
    6     6        ASSIGN_OP                                     8          !1, 'baz'
    7     7        INIT_FCALL                                               'memory_get_peak_usage'
          8        SEND_VAL                                                 <true>
          9        DO_ICALL                                         $7      
         10        SUB                                              ~8      $7, !0
         11        ECHO                                                     ~8
         12        ECHO                                                     '%0A'
    9    13        INIT_FCALL                                               'memory_get_peak_usage'
         14        SEND_VAL                                                 <true>
         15        DO_ICALL                                         $9      
         16        ASSIGN                                                   !0, $9
   10    17        INIT_FCALL                                               'implode'
         18        SEND_VAL                                                 ''
         19        SEND_VAL                                                 <array>
         20        DO_ICALL                                         $11     
         21        ASSIGN                                                   !1, $11
   11    22        INIT_FCALL                                               'memory_get_peak_usage'
         23        SEND_VAL                                                 <true>
         24        DO_ICALL                                         $13     
         25        SUB                                              ~14     $13, !0
         26        ECHO                                                     ~14
         27        ECHO                                                     '%0A'
         28      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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