| Conditions | 10 | 
| Paths | 1 | 
| Total Lines | 120 | 
| Code Lines | 94 | 
| Lines | 6 | 
| Ratio | 5 % | 
| Changes | 0 | ||
Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.
For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.
Commonly applied refactorings include:
If many parameters/temporary variables are present:
| 1 | <?php  | 
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| 45 | public function getConfigTreeBuilder()  | 
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| 46 |     { | 
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| 47 | $treeBuilder = new TreeBuilder();  | 
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| 48 |         $rootNode = $treeBuilder->root('liip_imagine', 'array'); | 
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| 49 | |||
| 50 | $resolversPrototypeNode = $rootNode  | 
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                         | 
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| 51 | ->children()  | 
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| 52 |                 ->arrayNode('resolvers') | 
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| 53 |                     ->useAttributeAsKey('name') | 
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| 54 |                     ->prototype('array') | 
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| 55 | ->performNoDeepMerging()  | 
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| 56 | ;  | 
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| 57 | $this->addResolversSections($resolversPrototypeNode);  | 
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| 58 | |||
| 59 | $loadersPrototypeNode = $rootNode  | 
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| 60 | ->children()  | 
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| 61 |                 ->arrayNode('loaders') | 
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| 62 |                     ->useAttributeAsKey('name') | 
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| 63 |                     ->prototype('array') | 
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| 64 | ;  | 
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| 65 | $this->addLoadersSections($loadersPrototypeNode);  | 
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| 66 | |||
| 67 | $rootNode  | 
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| 68 | ->beforeNormalization()  | 
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| 69 |                 ->ifTrue(function ($v) { | 
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| 70 | return  | 
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| 71 | empty($v['loaders']) ||  | 
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| 72 | empty($v['loaders']['default']) ||  | 
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| 73 | empty($v['resolvers']) ||  | 
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| 74 | empty($v['resolvers']['default'])  | 
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| 75 | ;  | 
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| 76 | })  | 
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| 77 |                 ->then(function ($v) { | 
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| 78 |                     if (empty($v['loaders'])) { | 
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| 79 | $v['loaders'] = [];  | 
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| 80 | }  | 
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| 81 | |||
| 82 |                     if (false == is_array($v['loaders'])) { | 
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| 83 |                         throw new \LogicException('Loaders has to be array'); | 
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| 84 | }  | 
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| 85 | |||
| 86 | View Code Duplication |                     if (false == array_key_exists('default', $v['loaders'])) { | 
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| 87 | $v['loaders']['default'] = ['filesystem' => null];  | 
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| 88 | }  | 
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| 89 | |||
| 90 |                     if (empty($v['resolvers'])) { | 
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| 91 | $v['resolvers'] = [];  | 
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| 92 | }  | 
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| 93 | |||
| 94 |                     if (false == is_array($v['resolvers'])) { | 
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| 95 |                         throw new \LogicException('Resolvers has to be array'); | 
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| 96 | }  | 
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| 97 | |||
| 98 | View Code Duplication |                     if (false == array_key_exists('default', $v['resolvers'])) { | 
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| 99 | $v['resolvers']['default'] = ['web_path' => null];  | 
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| 100 | }  | 
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| 101 | |||
| 102 | return $v;  | 
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| 103 | })  | 
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| 104 | ->end()  | 
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| 105 | ;  | 
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| 106 | |||
| 107 | $rootNode  | 
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| 108 |             ->fixXmlConfig('filter_set', 'filter_sets') | 
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| 109 | ->children()  | 
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| 110 |                 ->scalarNode('driver')->defaultValue('gd') | 
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| 111 | ->validate()  | 
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| 112 |                         ->ifTrue(function ($v) { | 
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| 113 | return !in_array($v, ['gd', 'imagick', 'gmagick']);  | 
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| 114 | })  | 
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| 115 |                         ->thenInvalid('Invalid imagine driver specified: %s') | 
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| 116 | ->end()  | 
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| 117 | ->end()  | 
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| 118 |                 ->scalarNode('cache')->defaultValue('default')->end() | 
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| 119 |                 ->scalarNode('cache_base_path')->defaultValue('')->end() | 
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| 120 |                 ->scalarNode('data_loader')->defaultValue('default')->end() | 
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| 121 |                 ->scalarNode('default_image')->defaultNull()->end() | 
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| 122 |                 ->arrayNode('controller') | 
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| 123 | ->addDefaultsIfNotSet()  | 
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| 124 | ->children()  | 
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| 125 |                         ->scalarNode('filter_action')->defaultValue('liip_imagine.controller:filterAction')->end() | 
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| 126 |                         ->scalarNode('filter_runtime_action')->defaultValue('liip_imagine.controller:filterRuntimeAction')->end() | 
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| 127 | ->end()  | 
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| 128 | ->end()  | 
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| 129 |                 ->arrayNode('filter_sets') | 
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| 130 |                     ->useAttributeAsKey('name') | 
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| 131 |                     ->prototype('array') | 
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| 132 |                         ->fixXmlConfig('filter', 'filters') | 
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| 133 | ->children()  | 
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| 134 |                             ->scalarNode('quality')->defaultValue(100)->end() | 
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| 135 |                             ->scalarNode('jpeg_quality')->defaultNull()->end() | 
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| 136 |                             ->scalarNode('png_compression_level')->defaultNull()->end() | 
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| 137 |                             ->scalarNode('png_compression_filter')->defaultNull()->end() | 
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| 138 |                             ->scalarNode('format')->defaultNull()->end() | 
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| 139 |                             ->booleanNode('animated')->defaultFalse()->end() | 
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| 140 |                             ->scalarNode('cache')->defaultNull()->end() | 
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| 141 |                             ->scalarNode('data_loader')->defaultNull()->end() | 
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| 142 |                             ->scalarNode('default_image')->defaultNull()->end() | 
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| 143 |                             ->arrayNode('filters') | 
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| 144 |                                 ->useAttributeAsKey('name') | 
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| 145 |                                 ->prototype('array') | 
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| 146 |                                     ->useAttributeAsKey('name') | 
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| 147 |                                     ->prototype('variable')->end() | 
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| 148 | ->end()  | 
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| 149 | ->end()  | 
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| 150 |                             ->arrayNode('post_processors') | 
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| 151 | ->defaultValue([])  | 
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| 152 |                                 ->useAttributeAsKey('name') | 
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| 153 |                                 ->prototype('array') | 
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| 154 |                                     ->useAttributeAsKey('name') | 
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| 155 |                                     ->prototype('variable')->end() | 
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| 156 | ->end()  | 
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| 157 | ->end()  | 
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| 158 | ->end()  | 
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| 159 | ->end()  | 
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| 160 | ->end()  | 
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| 161 | ->end();  | 
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| 162 | |||
| 163 | return $treeBuilder;  | 
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| 164 | }  | 
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| 165 | |||
| 193 | 
Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different sub-classes of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the parent class: