Wordpress query with multiple meta meta keys - wordpress

Question

Can someone tell me what wrong with this query.
if ( isset( $_GET['lokacija'] ) && !empty( $_GET['lokacija'] ) ) {
$lokacija = $_GET['lokacija'];
} else { $lokacija = ''; }
if ( isset( $_GET['tip'] ) && !empty( $_GET['tip'] ) ) {
$tip = $_GET['tip'];
} else { $tip = ''; }
if ( isset( $_GET['sobe'] ) && !empty( $_GET['sobe'] ) ) {
$sobe = $_GET['sobe'];
} else { $sobe = ''; }
$paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
$args2 = array(
'posts_per_page' => 10,
'post_type' => 'nekretnine',
'paged' => $paged,
if ($lokacija != '') {
'meta_query' => array(
array (
'key' => 'lokacija',
'value' => $lokacija.''
),
)
}
);
$wp_query = new WP_Query( $args2 );
This code gives me error
Parse error: syntax error, unexpected T_IF, expecting ')' in
*/wp-content/themes/gs/page-nek-pretraga.php on line 23;
Line 23 is line that starts with if ($lokacija)...
What i want to do is to use multiple meta_query that i can get from php get (www.blabla./com/page1/?lokacija=foo&tip=foo&sobe=3)
But, i want it only if lets say $lokacija is not empty. Same for other two (possible 5-6 later) fields.

Answer 1

You can not include if condition in array. Whatever you are trying to achieve with above code is you can achieve with this following code.
$args2 = array(
'posts_per_page' => 10,
'post_type' => 'nekretnine',
'paged' => $paged,
);
if ($lokacija != '') {
$args2['meta_query'] = array(
array (
'key' => 'lokacija',
'value' => $lokacija.''
),
);
}

Answer 2

To check for multiple custom fields we have to join the meta table twice.
So the copy of the table is joined with a different temporary table name.
global $wpdb; $query = " SELECT * FROM {$wpdb--->prefix}posts
INNER JOIN {$wpdb->prefix}postmeta m1
ON ( {$wpdb->prefix}posts.ID = m1.post_id )
INNER JOIN {$wpdb->prefix}postmeta m2
ON ( {$wpdb->prefix}posts.ID = m2.post_id )
WHERE
{$wpdb->prefix}posts.post_type = 'post'
AND {$wpdb->prefix}posts.post_status = 'publish'
AND ( m1.meta_key = 'date' AND m1.meta_value > '2010-12-05 00:00:00' )
AND ( m1.meta_key = 'date' AND m1.meta_value < '2010-12-12 00:00:00' ) AND ( m2.meta_key = 'some_other_meta_value' AND m2.meta_value != '' ) GROUP BY {$wpdb->prefix}posts.ID
ORDER BY {$wpdb->prefix}posts.post_date
DESC;
For More Details Visit : http://realtuts.com/write-custom-wordpress-sql-query-multiple-meta-values/
";