这是我的密码。它从url获取变量。它非常慢，有时甚至不完整。如何改进它？

注意：大多数情况下，一些变量没有任何值。我想，如果我检查这个并从查询中删除它的数组，它会有所改进。

$value1 = $_GET[\'extra1\'];
$value2 = $_GET[\'extra2\'];
$value3 = $_GET[\'extra3\'];
$value4 = $_GET[\'extra4\'];
$value5 = $_GET[\'extra5\'];
$value6 = $_GET[\'extra6\'];
$value7 = $_GET[\'extra7\'];
$value8 = $_GET[\'extra8\'];
$value9 = $_GET[\'extra9\'];
$value10 = $_GET[\'extra10\'];

$args = array(
    \'meta_query\' => array(
        array(
            \'key\' => extra1,
            \'value\' => $value1,
            \'compare\' => \'=\'
        ),
        array(
            \'key\' => extra2,
            \'value\' => $value2,
            \'compare\' => \'=\'
        ),
        array(
            \'key\' => extra3,
            \'value\' => $value3,
            \'compare\' => \'=\'
        ),
        array(
            \'key\' => extra4,
            \'value\' => $value4,
            \'compare\' => \'=\'
        ),
        array(
            \'key\' => extra5,
            \'value\' => $value5,
            \'compare\' => \'=\'
        ),
        array(
            \'key\' => extra6,
            \'value\' => $value6,
            \'compare\' => \'=\'
        ),
        array(
            \'key\' => extra7,
            \'value\' => $value7,
            \'compare\' => \'=\'
        ),
        array(
            \'key\' => extra8,
            \'value\' => $value8,
            \'compare\' => \'=\'
        ),
        array(
            \'key\' => extra9,
            \'value\' => $value9,
            \'compare\' => \'=\'
        ),
        array(
            \'key\' => extra10,
            \'value\' => $value10,
            \'compare\' => \'=\'
        )
    )
 );
$query = new WP_Query( $args );

if ( $query->have_posts() ) : 
    while ( $query->have_posts() ) : $query->the_post();
        the_title();
    endwhile;
endif;