SQLSTATE [HY093]：無効なパラメータ番号：行番号102のトークン数と一致しません

Question

SQLSTATE [HY093]のエラーが表示されます。無効なパラメータ番号：バインドされた変数の数がトークンの数と一致しません以下comments.phpでライン102上：numRowsの数が、あなたが実際にそれには何もバインドすることはありません：

<?php 

/** 
* Class to handle articles 
*/ 

class Comment 
{ 
    // Properties 

    /** 
    * @var int The article ID from the database 
    */ 
    public $id = null; 

    /** 
    * @var int When the article is to be/was first published 
    */ 
    public $publicationDate = null; 

    /** 
    * @var string Full title of the article 
    */ 
    public $title = null; 

    /** 
    * @var string The HTML content of the article 
    */ 
    public $content = null; 

    /** 
    * @var int The article ID from the database 
    */ 
    public $articleid = null; 


    /** 
    * Sets the object's properties using the values in the supplied array 
    * 
    * @param assoc The property values 
    */ 

    public function __construct($data=array()) { 
    if (isset($data['id'])) $this->id = (int) $data['id']; 
    if (isset($data['publicationDate'])) $this->publicationDate = (int) $data['publicationDate']; 
    if (isset($data['title'])) $this->title = preg_replace ("/[^\.\,\-\_\'\"\@\?\!\:\$ a-zA-Z0-9()]/", "", $data['title']); 
    if (isset($data['content'])) $this->content = $data['content']; 
     if (isset($data['articleid'])) $this->articleid = (int) $data['articleid']; 
    } 


    /** 
    * Sets the object's properties using the edit form post values in the supplied array 
    * 
    * @param assoc The form post values 
    */ 

    public function storeFormValues($params) { 

    // Store all the parameters 
    $this->__construct($params); 

    // Parse and store the publication date 
    if (isset($params['publicationDate'])) { 
     $publicationDate = explode ('-', $params['publicationDate']); 

     if (count($publicationDate) == 3) { 
     list ($y, $m, $d) = $publicationDate; 
     $this->publicationDate = mktime (0, 0, 0, $m, $d, $y); 
     } 
    } 
    } 


    public static function getById($id) { 
    $conn = new PDO(DB_DSN, DB_USERNAME, DB_PASSWORD); 
    $sql = "SELECT *, UNIX_TIMESTAMP(publicationDate) AS publicationDate FROM comments WHERE id = :id"; 
    $st = $conn->prepare($sql); 
    $st->bindValue(":id", $id, PDO::PARAM_INT); 
    $st->execute(); 
    $row = $st->fetch(); 
    $conn = null; 
    if ($row) return new Comment($row); 
    } 


    /** 
    * Returns all (or a range of) Article objects in the DB 
    * 
    * @param int Optional The number of rows to return (default=all) 
    * @param string Optional column by which to order the articles (default="publicationDate DESC") 
    * @return Array|false A two-element array : results => array, a list of Article objects; totalRows => Total number of articles 
    */ 

    public static function getList($art=1, $order="publicationDate DESC", $numRows=10000) { 
    $conn = new PDO(DB_DSN, DB_USERNAME, DB_PASSWORD); 
    $sql = "SELECT SQL_CALC_FOUND_ROWS *, UNIX_TIMESTAMP(publicationDate) AS publicationDate FROM comments WHERE articleid = :art 
     ORDER BY " . mysql_escape_string($order) . " LIMIT :numRows"; 

    $st = $conn->prepare($sql); 
    $st->bindValue(":art", $art, PDO::PARAM_INT); 
    $st->execute(); 
    $list = array(); 

    while ($row = $st->fetch()) { 
     $comments = new Comment($row); 
     $list[] = $comment; 
    } 
    } 


    /** 
    * Inserts the current Article object into the database, and sets its ID property. 
    */ 

    public function insert() { 

    // Insert the Article 
    $conn = new PDO(DB_DSN, DB_USERNAME, DB_PASSWORD); 
    $sql = "INSERT INTO comments (publicationDate, title, content, articledid) VALUES (FROM_UNIXTIME(:publicationDate), :title, :content, :articleid)"; 
    $st = $conn->prepare ($sql); 
    $st->bindValue(":publicationDate", $this->publicationDate, PDO::PARAM_INT); 
    $st->bindValue(":title", $this->title, PDO::PARAM_STR); 
    $st->bindValue(":content", $this->content, PDO::PARAM_STR); 
    $st->bindValue(":articleid", $this->articleid, PDO::PARAM_STR); 
    $st->execute(); 
    $this->id = $conn->lastInsertId(); 
    $conn = null; 
    } 


    /** 
    * Updates the current Article object in the database. 
    */ 

    public function update() { 

    // Update the Article 
    $conn = new PDO(DB_DSN, DB_USERNAME, DB_PASSWORD); 
    $sql = "UPDATE comments SET publicationDate=FROM_UNIXTIME(:publicationDate), title=:title, summary=:summary, content=:content, articleid=:articleid,imageExtension=:imageExtension WHERE id = :id"; 
    $st = $conn->prepare ($sql); 
    $st->bindValue(":publicationDate", $this->publicationDate, PDO::PARAM_INT); 
    $st->bindValue(":title", $this->title, PDO::PARAM_STR); 
    $st->bindValue(":content", $this->content, PDO::PARAM_STR); 
     $st->bindValue(":articleid", $this->articleid, PDO::PARAM_STR); 
    $st->bindValue(":id", $this->id, PDO::PARAM_INT); 
    $st->execute(); 
    $conn = null; 
    } 


    /** 
    * Deletes the current Article object from the database. 
    */ 

    public function delete() { 


    // Delete the Article 
    $conn = new PDO(DB_DSN, DB_USERNAME, DB_PASSWORD); 
    $st = $conn->prepare ("DELETE FROM comments WHERE id = :id LIMIT 1"); 
    $st->bindValue(":id", $this->id, PDO::PARAM_INT); 
    $st->execute(); 
    $conn = null; 
    } 

} 

?> 

Answer 1

あなたはバインディングと呼ばを宣言した

$sql = "SELECT SQL_CALC_FOUND_ROWS *, UNIX_TIMESTAMP(publicationDate) AS publicationDate  FROM comments WHERE articleid = :art 
ORDER BY " . mysqli_escape_string($order) . " LIMIT :numRows"; 

$st = $conn->prepare($sql); 
$st->bindValue(":art", $art, PDO::PARAM_INT); 

ここにすべてのあなたのバインディングを結合しませんでした。