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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * GpsLab component.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author    Peter Gribanov <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @copyright Copyright (c) 2017, Peter Gribanov  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license   http://opensource.org/licenses/MIT  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace GpsLab\Component\Enum\Bench\Compare;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GpsLab\Component\Enum\Tests\Fixture\Enum\AbcExp;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GpsLab\Component\Enum\Tests\Fixture\Enum\AbcRef;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GpsLab\Component\Enum\Tests\Fixture\Enum\DefRef;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GpsLab\Component\Enum\Tests\Fixture\Enum\Rival\AbcHappyTypes;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GpsLab\Component\Enum\Tests\Fixture\Enum\Rival\AbcMarcMabe;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GpsLab\Component\Enum\Tests\Fixture\Enum\Rival\AbcMyClabs;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GpsLab\Component\Enum\Tests\Fixture\Enum\Rival\DefMarcMabe;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use PhpBench\Benchmark\Metadata\Annotations\Iterations;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use PhpBench\Benchmark\Metadata\Annotations\Revs;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @Revs(2500)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @Iterations(25)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class AllOperationCompareEnumBench implements CompareEnumBench  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                View Code Duplication | 
                    public function benchReflectionEnum()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $a = AbcRef::A();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $a->equals(AbcRef::A());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $b = AbcRef::B();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $b->equals(AbcRef::A());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $c = AbcRef::C();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $z = (string) $c;  | 
            
                            
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                        AbcRef::choices();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        AbcRef::values();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                    public function benchReflectionEnumNoMagic()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $d = DefRef::byValue(DefRef::D);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $d->equals(DefRef::byValue(DefRef::D));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $e = DefRef::byValue(DefRef::E);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $e->equals(DefRef::byValue(DefRef::D));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $f = DefRef::byValue(DefRef::F);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $z = (string) $f;  | 
            
                            
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                        DefRef::choices();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        DefRef::values();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                    public function benchExplicitEnum()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $a = AbcExp::byValue(AbcExp::A);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $a->equals(AbcExp::byValue(AbcExp::A));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $b = AbcExp::byValue(AbcExp::B);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $b->equals(AbcExp::byValue(AbcExp::A));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $c = AbcExp::byValue(AbcExp::C);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $e = (string) $c;  | 
            
                            
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                        AbcExp::choices();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        AbcExp::values();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                View Code Duplication | 
                    public function benchMyCLabsEnum()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $a = AbcMyClabs::A();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $a->equals(AbcMyClabs::A());  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $b = AbcMyClabs::B();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $b->equals(AbcMyClabs::A());  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $c = AbcMyClabs::C();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $z = (string) $c;  | 
            
                            
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                        AbcMyClabs::choices();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        AbcMyClabs::values();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                    public function benchMabeEnum()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $a = AbcMarcMabe::A();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $a->is(AbcMarcMabe::A());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $b = AbcMarcMabe::B();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $b->is(AbcMarcMabe::A());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $c = AbcMarcMabe::C();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $z = (string) $c;  | 
            
                            
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                        AbcMarcMabe::choices();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        AbcMarcMabe::values();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                    public function benchMabeNoMagicEnum()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $d = DefMarcMabe::byValue(DefMarcMabe::D);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $d->is(DefMarcMabe::byValue(DefMarcMabe::D));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $e = DefMarcMabe::byValue(DefMarcMabe::E);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $e->is(DefMarcMabe::byValue(DefMarcMabe::D));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $f = DefMarcMabe::byValue(DefMarcMabe::F);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $z = (string) $f;  | 
            
                            
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                        DefMarcMabe::choices();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        DefMarcMabe::values();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                    public function benchHappyTypesEnum()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $a = AbcHappyTypes::A();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $a->equals(AbcHappyTypes::A());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $b = AbcHappyTypes::B();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $b->equals(AbcHappyTypes::A());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $c = AbcHappyTypes::C();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $z = (string) $c;  | 
            
                            
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                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    129
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    130
                 | 
                                    
                                                     | 
                
                 | 
                        AbcHappyTypes::choices();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    131
                 | 
                                    
                                                     | 
                
                 | 
                        AbcHappyTypes::values();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    132
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    133
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    134
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                        
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.