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<?php var_dump(['foo', 'bar'] === 'baz'); // bool(false) - not equal var_dump(['foo', 'bar'] == 'baz'); // bool(false) - still not equal var_dump(strcmp(['foo', 'bar'], 'baz')); // NULL... var_dump(strcmp(['foo', 'bar'], 'baz') == 0); // bool(true) - booby trap! var_dump(strcmp(['foo', 'bar'], 'baz') === 0); // bool(false) - so far, so good... var_dump(strcmp(['foo', 'bar'], 'baz') > 0); // bool(false) - okay... var_dump(strcmp(['foo', 'bar'], 'baz') < 0); // bool(false) - lolphpmanual
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/H3fal
function name:  (null)
number of ops:  46
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        SEND_VAL                                                 <false>
          2        DO_ICALL                                                 
    4     3        INIT_FCALL                                               'var_dump'
          4        SEND_VAL                                                 <false>
          5        DO_ICALL                                                 
    5     6        INIT_FCALL                                               'var_dump'
          7        INIT_FCALL                                               'strcmp'
          8        SEND_VAL                                                 <array>
          9        SEND_VAL                                                 'baz'
         10        DO_ICALL                                         $2      
         11        SEND_VAR                                                 $2
         12        DO_ICALL                                                 
    6    13        INIT_FCALL                                               'var_dump'
         14        INIT_FCALL                                               'strcmp'
         15        SEND_VAL                                                 <array>
         16        SEND_VAL                                                 'baz'
         17        DO_ICALL                                         $4      
         18        IS_EQUAL                                         ~5      $4, 0
         19        SEND_VAL                                                 ~5
         20        DO_ICALL                                                 
    8    21        INIT_FCALL                                               'var_dump'
         22        INIT_FCALL                                               'strcmp'
         23        SEND_VAL                                                 <array>
         24        SEND_VAL                                                 'baz'
         25        DO_ICALL                                         $7      
         26        IS_IDENTICAL                                     ~8      $7, 0
         27        SEND_VAL                                                 ~8
         28        DO_ICALL                                                 
    9    29        INIT_FCALL                                               'var_dump'
         30        INIT_FCALL                                               'strcmp'
         31        SEND_VAL                                                 <array>
         32        SEND_VAL                                                 'baz'
         33        DO_ICALL                                         $10     
         34        IS_SMALLER                                       ~11     0, $10
         35        SEND_VAL                                                 ~11
         36        DO_ICALL                                                 
   10    37        INIT_FCALL                                               'var_dump'
         38        INIT_FCALL                                               'strcmp'
         39        SEND_VAL                                                 <array>
         40        SEND_VAL                                                 'baz'
         41        DO_ICALL                                         $13     
         42        IS_SMALLER                                       ~14     $13, 0
         43        SEND_VAL                                                 ~14
         44        DO_ICALL                                                 
         45      > RETURN                                                   1

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