Question

$id=array(1,3,5);
$sql="delete * from tablename where id = ".$id;

现在我要删除$ id为1,3和5的mysql中的所有记录。

Answer 1

DELETE FROM `tablename` WHERE id IN (1, 3, 5);

使用PDO：

$ids = array(1, 3, 5);
/* Create a string for the parameter placeholders filled to the number of params */
$place_holders = implode(',', array_fill(0, count($ids), '?'));

/*
    This prepares the statement with enough unnamed placeholders for every value
    in our $ids array. The values of the $ids array are then bound to the
    placeholders in the prepared statement when the statement is executed.
*/
$stmt = $dbh->prepare("DELETE FROM tablename WHERE id IN (" . $place_holders . ")");
$stmt->execute($ids);

Answer 2

在mysql中尝试以下：

DELETE FROM tablename WHERE id IN (1, 3, 5)

https://dev.mysql.com/doc/refman/4.1/en/delete.html

https://dev.mysql.com/doc/refman/5.0/en/comparison-operators.html#function_in

Answer 3

使用id删除：

DELETE FROM `tablename` WHERE id = 1;

带有IN子句的

：

DELETE FROM `tablename` WHERE id IN (1, 3, 5);

删除指定表格中的所有内容

TRUNCATE table `tablename`;

使用给定的元素数组进行删除：

foreach($id as $i) {
    $sql="delete * from tablename where id = ".$i;
}

Answer 4

$id=array(1,3,5);
$ids = implode(",",$id);
$sql="delete * from tablename where id IN (".$ids.")";

使用上面的代码。

Answer 5

首先需要将数组转换为普通字符串

$ids = array(1, 3, 5);
$strngId = implode(",",$ids);

现在使用此变量可以编写删除查询。

$sql = "Delete * from tablename where idfield IN (".$strngId.")";

如何使用php批量删除记录

5 个答案: