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PHP method that returns interface instance into array

<p>I have a small question that I can't find the answer to on the internet and I'm not really sure how php and the interface work. </p> <p>So the problem is I have an if(!variable instanceof class). But here, the class being checked is an interface and should be in an array, you can see in the following code </p> <pre class="brush:php;toolbar:false;">abstract class Action { final public function call(Bone $bone) { $sites = $this->getSites($bone); foreach ($sites as $site) { if (!$site instanceof Site) { throw new \Exception("Invalid entry"); } } } } class BonesSites { public function getSites(string $site): array { if ($site === 'Egypt') { return [ [ 'siteId' => 1, 'name' => 'Cairo', 'bone' => 'T-Rex bones', ], [ 'siteId' => 2, 'name' => 'Giza', 'bone' => 'Raptors bones', ], [ 'siteId' => 3, 'name' => 'Alexandria', 'bone' => 'Bronchiosaurus bones', ], ]; } return ['error' => 'Site not found!']; } } interfaceBone { public function getName(): string; } interface site { }</pre> <p>Is there any way to return an interface in an array? </p>
P粉488464731P粉488464731438 days ago564

reply all(1)I'll reply

  • P粉447495069

    P粉4474950692023-09-02 12:10:35

    You need to create an extra class called Site and return an array of objects.

    class Site
    {
        private int $siteId;
        private string $name;
        private string $bone;
    
        /**
         * @param int    $siteId
         * @param string $name
         * @param string $bone
         */
        public function __construct(int $siteId, string $name, string $bone)
        {
            $this->siteId = $siteId;
            $this->name = $name;
            $this->bone = $bone;
        }
    
        /**
         * @return int
         */
        public function getSiteId(): int
        {
            return $this->siteId;
        }
    
        /**
         * @param int $siteId
         */
        public function setSiteId(int $siteId): void
        {
            $this->siteId = $siteId;
        }
    
        /**
         * @return string
         */
        public function getName(): string
        {
            return $this->name;
        }
    
        /**
         * @param string $name
         */
        public function setName(string $name): void
        {
            $this->name = $name;
        }
    
        /**
         * @return string
         */
        public function getBone(): string
        {
            return $this->bone;
        }
    
        /**
         * @param string $bone
         */
        public function setBone(string $bone): void
        {
            $this->bone = $bone;
        }
    
    }
    

    Then return the site array:

            return
                [
                    (new Site(1, '开罗', 'T-Rex骨骼')),
                    (new Site(2, '吉萨', '迅猛龙骨骼')),
                    (new Site(3, '亚历山大', '腕龙骨骼'))
                ];
    

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