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    ReflectionProperty::getType

    (PHP 7 >= 7.4.0, PHP 8)

    ReflectionProperty::getType — プロパティの型を取得する

    説明

    public ReflectionProperty::getType(): ?ReflectionType

    プロパティに関連付けられた型を取得する

    パラメータ

    この関数にはパラメータはありません。

    戻り値

    プロパティが型を持っていれば、ReflectionType を返します。そうでなければ、 null を返します。

    例

    例1 ReflectionProperty::getType() の例

    <?php
    class User
    {
    public     string $name;
    }

    $rp = new ReflectionProperty('User', 'name');
    echo     $rp->getType()->getName();
    ?>

    上の例の出力は以下となります。

    string

    参考

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    User Contributed Notes 2 notes

    up
    7
    email at dronov dot vg
    4 years ago
    class User
    {
        /**
         * @var string
         */
        public $name;
    }

    function getTypeNameFromAnnotation(string $className, string $propertyName): ?string
    {
        $rp = new \ReflectionProperty($className, $propertyName);
        if (preg_match('/@var\s+([^\s]+)/', $rp->getDocComment(), $matches)) {
            return $matches[1];
        }
       
        return null;
    }
       
    echo getTypeNameFromAnnotation('User', 'name');

    // string
    up
    0
    andr3medeiros at gmail dot com
    4 years ago
    <?php

    namespace App\Traits;

    use     ReflectionClass;
    use     Illuminate\Support\Str;
    use     InvalidArgumentException;

    trait     FieldTypeTrait {
     
      protected function     getType(String $field, ReflectionClass $reflectedClass = null)
      {
        if(    is_null($reflectedClass)) {
              $reflectedClass = new ReflectionClass($this);
        }

        if (    $reflectedClass->hasProperty($field)) {
          return     $this->getFieldType($field, $reflectedClass);
        }

        return     null;
      }

      protected function     enumValue(String $field) {
        if(    $this->isEnum($field)) {
          throw new     InvalidArgumentException("'$field' is not an enum");
        }

            $type = $this->getType($field);
            $enumClass = $type->name;

        return new     $enumClass($this->{$field});
      }

      protected function     isEnum(String $field)
      {
            $type = $this->getType($field);

        if(!    is_object($type)) {
          return     false;
        }

            $className = $type->name;

            $reflectedClass = new ReflectionClass($className);
            $reflectedParent = $reflectedClass->getParentClass();

        return     $reflectedParent->getName() == 'MyCLabs\Enum\Enum';
      }

      private function     getUseStatements(): array
      {
            $reflectedThis = new ReflectionClass($this);
            $contents = file_get_contents($reflectedThis->getFileName());

            $matches = [];

            preg_match_all("/use ([\w\\\\]+)( as \w+)*/", $contents, $matches);

            $results = [];
        foreach (    $matches[1] as $index => $value) {
              $results[] = [
                'namespace' => $value,
                'alias' => isset($matches[2][$index]) ? str_replace(' as ', '', $matches[2][$index]) : null
              ];
        }

        return     $results;
      }

      private function     getFieldType(String $field, ReflectionClass $reflectedClass)
      {
            $docComment = $reflectedClass->getProperty($field)->getDocComment();
            $type = $this->getFieldTypeByFieldDocComment($docComment);

        if (!    is_object($type)) {
              $fromClass = $this->getTypeByClassDocComment($field, $reflectedClass->getDocComment());
         
          if(    is_object($fromClass)) {
              return     $fromClass;
          }
        }

        return     $type;
      }

      private function     getFieldTypeByFieldDocComment(String $docComment)
      {
            $matches = [];

        if (    preg_match("/\@var (\w+)(\[\])*/", $docComment, $matches) === 1) {

          if (    count($matches) > 0) {
                $type = $matches[1];
                $isArray = isset($matches[2]);
                $fullyQualifiedName = $this->getFullyQualifiedName($type);

            if (    class_exists($fullyQualifiedName)) {
              return (object) [
                    'name' => $fullyQualifiedName,
                    'array' => $isArray
                  ];
            }
          }

          return     $type;
        }
      }

      private function     getTypeByClassDocComment(String $field, String $docComment)
      {
            $matches = [];

        if (    preg_match_all("/\@property (\w+) (\\$\w+)/", $docComment, $matches) > 0) {
              $type = null;
              $isArray = false;

          foreach (    $matches[2] as $index => $value) {
            if(    $value == $field) {
                  $type = $matches[1][$index];
                  $isArray = Str::endsWith($type, '[]');
                  $type = str_replace('[]', '', $type);
            }
          }

          if (    $type) {
                $fullyQualifiedName = $this->getFullyQualifiedName($type);

            if (    class_exists($fullyQualifiedName)) {
              return (object) [
                    'name' => $fullyQualifiedName,
                    'array' => $isArray
                  ];
            }
          }

          return     $type;
        }
      }

      private function     getFullyQualifiedName($className)
      {
            $useStatements = collect($this->getUseStatements());
            $aliasedStatement = $useStatements->where('alias', $className);

        if (    $aliasedStatement) {
          return     $aliasedStatement['namespace'];
        }

            $statement = $useStatements->first(function ($statement) use ($className) {
          return     Str::endsWith($statement['namespace'], $className);
        });

        if (    $statement) {
          return     $statement['namespace'];
        }

        return     null;
      }
    }
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