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我有一個很討厭的問題....獲取輸出,但不能在PHP腳本
我給這家代碼用法:我想通過Ajax獲得,只需5個記錄每次我點擊進一步 - 按鈕。我還沒有到目前爲止......
這個腳本只需要從特定用戶得到5條記錄。
問題:
所以SQL查詢運行不會對數據庫的任何問題。但是當我想用PHP腳本來做時,我只從第一個查詢中得到counter(),而第二個查詢從PDO-Statement中給出了一個空數組。
CODE:
if (empty($_SESSION['counter']) || ($_SESSION['counter'] < 0)) {
$sql = 'SELECT count(record.record_id) AS counter FROM record
LEFT JOIN recordbook ON record.record_id = recordbook.record
WHERE user = ?';
$sth = $this->dbc->prepare($sql);
$sth->execute(array($u_id['user_id']));
$count = $sth->fetch();
$_SESSION['counter'] = $count['counter'];
var_dump($_SESSION);
}
$_SESSION['counter'] = $_SESSION['counter'] - 5;
$sql = 'SELECT record.record_id, status, place, record.record AS records, comment, recorddate
FROM record LEFT JOIN recordbook ON record.record_id = recordbook.record
WHERE user = ? ORDER BY record.record_id DESC LIMIT ?,5';
$sth = $this->dbc->prepare($sql);
$sth->execute(array($u_id['user_id'],
$_SESSION['counter']));
$output = $sth->fetchAll();
}
希望有人知道如何解決這個問題?
表結構
Field | Type | Null | Key | Default | Extra
record_id | int(10) unsigned | NO | PRI NULL | auto_increment
status | varchar(200) | YES | NULL |
place | varchar(200) | YES | NULL
record | longtext | YES NULL
comment | longtext | YES | NULL
recorddate | timestamp | YES | CURRENT_TIMESTAMP
attachment_id | int(10) unsigned | YES | MUL | NULL
你在哪裏循環取回? –
你爲什麼要做DESC LIMIT?,如果你想5條記錄放下?,你的循環在哪裏? – clearshot66
用'while($ data = $ sth-> fetch()){var_dump($ data);}'替換'$ output = $ sth-> fetchAll();'看看你的數據是否在那裏。 – Dimi