[PHP] Errore inspiegabile

[Shyson]

Questo codice mi sembra a posto, ma mi da errore

<meta name="twitter:card" content="summary_large_image" />
    <meta name="twitter:site" content="@milton688" />
    <meta name="twitter:creator" content="@milton688" />
    <meta property="fb:app_id" content="1284906878314096" /> <!-- nome della app: ID-App -->
    <meta property="fb:admins" content="100002336026399" /> <!-- ID admin fb -->
    <meta property="og:type" content="website" />
    <meta property="og:locale" content="it_IT" />
    <meta property="og:site_name" content="AlbenessereBlog" />
    <?php
    /* META NAME & OPEN GRAPH PER PAGINE E ARTICOLI */
    if (is_page() || (is_single()) {
    ?>
    <meta property="og:title" content="<?php the_title(); ?>" />
    <meta property="og:image" content="<?php echo $fbthumb[0]; ?>" />
    <meta property="og:description" content="<?php echo $fbdesc; ?>" />
    <meta property="og:url" content="<?php the_permalink(); ?>" />
    <meta name="twitter:title" content="<?php the_title(); ?>" />
    <meta name="twitter:description" content="<?php echo $fbdesc; ?>" />
    <meta name="twitter:image:src" content="<?php echo $fbthumb[0]; ?>" />
    <?php
    }
    /*META NAME & OPEN GRAPH HOMEPAGE*/
    elseif (is_home()) {
    ?>
    <meta property="og:title" content="AlbenessereBlog" />
    <meta property="og:image" content="http://albenessereblog.altervista.org/wp-content/uploads/site_logo.png" />
    <meta property="og:description" content="Tutto ciò che riguarda il benessere." />
    <meta property="og:url" content="http://albenessereblog.altervista.org" />
    <meta name="twitter:title" content="AlbenessereBlog" />
    <meta name="twitter:description" content="Tutto ciò che riguarda il benessere." />
    <meta name="twitter:image:src" content="http://albenessereblog.altervista.org/wp-content/uploads/site_logo.png" />
    <?php
    }
}
add_action('wp_head', 'eve_meta' );

La riga 255 è questa: if (is_page() || (is_single()) {

Questo è l'errore che mi da:

Parse error: syntax error, unexpected '{' in /membri/albenessereblog/wp-content/themes/semicolon-child/functions.php on line 255

 

[macus_adi]

if (is_page() || (is_single()) {

if($is_page()|| is_single()){
}