PHP：无法重新声明类 Comment::GetComment [重复]

Posted 2023-03-31

【中文标题】PHP：无法重新声明类 Comment::GetComment [重复]

【英文标题】：PHP: Cannot redeclare class Comment::GetComment [duplicate]

【发布时间】：2020-05-08 23:58:28

【问题描述】：

有人可以纠正我的代码吗？ 错误是“致命错误：无法重新声明 Comment::getComment()” 如果错误在这个文件中，你能告诉我或更正吗？否则告诉我如何解决这个问题 谢谢你。

<?php  
require_once(__DIR__.'/../model/article_model.php');
require_once(__DIR__.'/../model/comments_model.php');
require_once(__DIR__.'/../model/espaceadmin_model.php');

class CommentsController 

    public static function commentsPage () 
            if(isset($_POST['deletecomments'])) 
            $deletecomments= Comment::getComment((int) $_POST['post_id']);
            $deletecomments->deletecomment();
    
        $template = file_get_contents(__DIR__.'/../view/backend/template-admin.html');
        $view = file_get_contents(__DIR__.'/../view/backend/commentsadmin_view.html');
        $loop_content = file_get_contents(__DIR__.'/../view/backend/commentsadmin_articles.html');
        $articles = Article::getArticles();


        $articleListe = "";
        foreach ($articles as $article) 
            $articleListe.=  str_replace('ARTICLE_TITLE', $article->getTitre(), $loop_content);
            $articleListe =  str_replace('ARTICLE_DATE', $article->getDate(), $articleListe);
            $articleListe =  str_replace('ARTICLE_CONTENT', $article->getContenu(), $articleListe);

            $comments = Comment::getComments($article->getId());
        foreach ($comments as $comment) 
            $articleListe =  str_replace('COMMENTS_AUTHOR', $comment->getAuthor(), $articleListe);
            $articleListe =  str_replace('COMMENTS_DATE', $comment->getComment_Date(), $articleListe);
            $articleListe =  str_replace('COMMENTS_COMMENT',$comment->getComment(), $articleListe);
            $articleListe = str_replace('COMMENT_POSTID', $comment->getPost_id(), $articleListe);
        
        

        $view = str_replace('BOUCLE', $articleListe, $view);
        $template = str_replace('CONTENT', $view, $template);
        $template = str_replace('TITLE', "Index", $template);

        print($template);
    



CommentsController::commentsPage();

编辑：这是另一个文件，我怎样才能消除这个错误？我想保留这两个功能

<?php 

class Comment  

    private $id = null;
    private $post_id;
    private $author;
    private $comment;
    private $comment_date;

    public function getId()
        return $this->id;
    

    public function getPost_id()
        return $this->post_id;
    

    public function setPost_id($post_id)
        $this->post_id = $post_id;
    

    public function getAuthor()
        return $this->author;
    

    public function setAuthor($author)
        $this->author = $author;
    

    public function getComment()
        return $this->comment;
    

    public function setComment($comment)
        $this->comment = $comment;
    

    public function getComment_date()
        return $this->comment_date;
    

    public function setComment_date($comment_date)
        $this->comment_date = $comment_date;

    

    public function persist()
        if($this->id==null) 
            $this->insert();
         else 
            $this->update();
        
    

    private function insert()
        $bdd = Database::getDb();
        $query = "INSERT INTO comments(post_id, author, comment, comment_date) VALUES(?,?,?,?)";
        $stmt = $bdd->prepare($query); 
        $stmt->execute([
            $this->post_id, 
            $this->author,
            $this->comment,
            $this->comment_date
        ]);
        $this->id=$bdd->lastInsertId();
        return true;
    

    /* private function update()  
        $bdd = Database::getDb();
        $query = "UPDATE comments SET comment = :comment WHERE id = :id";
    UPDATE ... WHERE id = ?
     */

    public static function getComments($id_post) 

        $bdd = Database::getDb(); 
        $reponse = $bdd->query('SELECT * FROM comments WHERE post_id = "'.$id_post.'"');

        $result= array();
        while ($donnees = $reponse->fetch())
        
            $currentArticle= new Comment();
            $currentArticle->id = $donnees['id'];
            $currentArticle->setPost_id($donnees['post_id']);
            $currentArticle->setAuthor($donnees['author']);
            $currentArticle->setComment($donnees['comment']);
            $currentArticle->setComment_date($donnees['comment_date']);

            array_push($result, $currentArticle);
        
        return $result; 
    


    public static function getComment(int $id_post) 
        $bdd = Database::getDb(); 
        $reponse = $bdd->query('SELECT * FROM comments WHERE post_id = "'.$id_post.'"');

        while ($donnees = $reponse->fetch())
        
            $currentArticle= new Comment();
            $currentArticle->id = $donnees['id'];
            $currentArticle->setPost_id($donnees['post_id']);
            $currentArticle->setAuthor($donnees['author']);
            $currentArticle->setComment($donnees['comment']);
            $currentArticle->setComment_date($donnees['comment_date']);
            return $currentArticle;
        
        return null; 
    

public function deletecomment() 
            $bdd = Database::getDb();
            $bdd->query('DELETE FROM comments WHERE post_id = "'.(int)$id_post.'"');
    

?>

【问题讨论】：

请显示您的评论课程。最有可能的是，您已经在那里声明了两次 getComment。

public function getComment() 和 public static function getComment(int $id_post) （getComments 也是如此）。 PHP 不支持这种类型的函数重载。类中的每个函数都必须具有唯一的名称。

【参考方案1】：

PHP 中不允许重载。您不能有两个具有相同名称和不同参数的函数。请看一下这个页面： PHP two methods with the same name