因此,我編寫了這個方法,用於我的chrome插件(它執行ajax請求來運行此方法),並且當它運行時,file_put_contents
顯示插入內容的id,但那麼當它到達insert ignore into songs
時,它將爲artist_id
輸入0
。我不知道爲什麼...有人可以幫助我找到我要出錯的地方嗎?由於某種原因,PDO插入一個id爲
<?php
public function saveLyrics($artist, $title, $lyric){
$this->db->query("insert ignore into artists (artist_name) value (:artist)", array("artist" => $artist));
$artist_id = (int)$this->db->insertID();
file_put_contents(__DIR__ . "/../process/page", "artist id: $artist_id");
//return;
if($artist_id == 0){
$artist_id = (int)$this->db->getOne("select artist_id from artists where artist_name = :artist", array("artist" => $artist));
}
if($artist_id == 0){
return false;
}
$this->db->query("insert ignore into songs (artist_id, song_name) values (:aid, :title)", array("aid" => $artist_id, "title" => $title));
$song_id = (int)$this->db->insertID();
if($song_id == 0){
$song_id = (int)$this->db->getOne("select song_id from songs where artist_id = aid and song_name = :title", array("aid" => $artist_id, "title" => $title));
}
}
PDO包裝:
<?php
/**
* @property PDO $pdo Description
* @property PDOStatement $sql Description
*/
class DB{
protected $sql = null;
protected $pdo = null;
public function connect(){
$this->pdo = new PDO("mysql:dbname=envne;host=xxx", "xxx", "xxx");
}
public function query($query, $params = array()){
if($this->pdo === null){
$this->connect();
}
$this->sql = $this->pdo->prepare($query);
foreach($params as $key => $value){
$this->sql->bindParam($key, $value);
}
$this->sql->execute();
if(!$this->sql)
return false;
return true;
}
public function insertID(){
return (int)$this->pdo->lastInsertId();
}
public function getAll($query, $params = array()){
$this->query($query, $params);
return $this->sql->fetchAll();
}
public function getOne($query, $params = array()){
$this->query($query, $params);
return $this->sql->fetchColumn();
}
}
藝術家:
mysql> describe artists;
+-------------+------------------+------+-----+-------------------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------------+------------------+------+-----+-------------------+----------------+
| artist_id | int(10) unsigned | NO | PRI | NULL | auto_increment |
| artist_name | char(50) | YES | UNI | NULL | |
| add_date | timestamp | YES | | CURRENT_TIMESTAMP | |
+-------------+------------------+------+-----+-------------------+----------------+
3 rows in set (0.00 sec)
歌曲:
mysql> describe songs;
+------------+------------------+------+-----+-------------------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------+------------------+------+-----+-------------------+----------------+
| song_id | int(10) unsigned | NO | PRI | NULL | auto_increment |
| artist_id | int(11) unsigned | YES | MUL | NULL | |
| album_id | int(11) | YES | MUL | NULL | |
| song_name | char(50) | YES | | NULL | |
| track_id | int(11) | YES | | NULL | |
| date_added | timestamp | NO | | CURRENT_TIMESTAMP | |
+------------+------------------+------+-----+-------------------+----------------+
6 rows in set (0.01 sec)
你有一個'auto_increment'列在表中?是否因重複鍵而忽略插入? – MichaelRushton
表格定義請 – fredrik
對不起,我的意思是'artist_id'而不是'song_id'。 –