İki kodda çalışıyor tahminimce en kısa olan daha iyidir
<?if (is_home()){
$description = " ";
} elseif (is_single()){
if ($post->post_excerpt) {
$description = $post->post_excerpt;
} else {
$description = substr(strip_tags($post->post_content),0,150);
}
}
?>
<meta name="description" content="<?=$description?>" />İkinci kod
<meta name="description" content="<?php if (is_single() ) {?>
<?php if ( $posts ) : ?>
<?php function getWords($text, $limit) {
$array = explode(" ", $text, $limit +1);
if(count($array) > $limit) {
unset($array[$limit]);
}
return implode(" ", $array); }
?>
<?php foreach ( $posts as $post ) : ?>
<?php $mycontent = strip_tags($post->post_content);
$excerpt = getWords($mycontent, 19);
$a_title = $excerpt . " ."; ?><?php echo $a_title ?>
<?php endforeach // $posts as $post ?>
<?php endif // $posts ?>
<?php
$post = $this_post;
unset($this_post);
}?> " /> 
