用php将关联数组插入mysql

Question

我有一个看起来像的关联数组

$rates = array (
    'AUD' => '0.5',
    'BRL' => '1.2',
    'CAD' => '0.6',
    'CHF' => '0.4',
    'CZK' => '1.5',
 );

我想将此数组放在mysql中，以便可以使用汇率制作货币转换器。 我的问题是你如何尝试

$servername = "localhost";
$username = "root";
$password = "";
$dbname = "eurotoforgein";

// Create connection
$conn = mysqli_connect($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

$table = 'rates';

$keys = implode(', ', array_keys($rates));
$values = "'" . implode("','", array_values($rates)) . "'";

$sql = 'insert into '.$table.'('.$keys.') values ('.$values.')';


if(!$result = $conn->query($sql)){ 

die('There was an error running the query [' . $conn->error . ']'); 

}

else{
echo "Data inserted.";
}

我得到的错误是针对所使用的表运行查询[“字段列表”中的未知列“ AUD”）时出错

// sql to create table
$sql = "CREATE TABLE eurotoforgein (
COUNTRY VARCHAR(6),
RATES FLOAT(10)

)";

if ($conn->query($sql) === TRUE) {
    echo "Table MyGuests created successfully";
} else {
    echo "Error creating table: " . $conn->error;
}

欢迎任何帮助，谢谢

Answer 1

您可以像这样为多个值生成一个插入

$pairs = [];
foreach($rates as $key => $value)
{
    $pairs[] = "('$key', $value)";
}
$pairs_str = implode(',', $pairs);

$sql = 'insert into '.$table.' (COUNTRY, RATES) values ' . $pairs_str;