[英]SQL Variable Inserting INSIDE mysql_query
我正在嘗試使用PHP和SQL制作價格滑塊,但是當我在此代碼中遇到問題時遇到問題
$query = mysql_query("SELECT * FROM price WHERE phone_price BETWEEN" .$from. "AND" .$to. );
while($row = mysql_fetch_array($query)){
print $row['phone_name'];
print $row['phone_price'];
print '';
}
我想運行SQL查詢,例如SELECT * FROM price WHERE phone_price BETWEEN 300 AND 500
我正在制作一個測試版,因此我接受了<input>
的$ from和$ to值,我認為在mysql_query中插入變量時出現了錯誤。
錯誤- Warning: mysql_fetch_array() expects parameter 1 to be resource, boolean given in C:\\xampp\\htdocs\\login\\slide\\slide.php on line 28
您的查詢有誤。 BETWEEN和AND之后需要空格。 否則php會讀取您的查詢,例如...BETWEEN123AND1234...
而且您最好使用引號放置var:
$query = mysql_query("SELECT * FROM `price` WHERE `phone_price` BETWEEN '".$from."' AND '".$to."'");
$dsn = "mysql:host=localhost;dbname=my_database";
$pdo = new PDO($dsn, $login, $password);
$sh = $pdo->prepare("SELECT * FROM price WHERE phone_price BETWEEN :from AND :to");
$sh->bindParam(':from',$from,PDO::PARAM_INT);
$sh->bindParam(':to',$to,PDO::PARAM_INT);
$res = $sh->fetch_all(PDO::FETCH_ASSOC);
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