Wordpress aynı isimde sayfa oluşumunu engellemek/ nasıl yapılır?

$translation_text = trim($translation->translated_text);

// Generate initial post slug
$post_slug = sanitize_title('Translation: ' . $translation_text);
$post_slug = mb_substr($post_slug, 0, 50);

// Check if a page with the same slug already exists
$existing_page = get_page_by_path($post_slug);

// If a page with the same slug exists, do not create a new page
if ($existing_page) {
    return;
}
            
            // Split translation text into words
            $words = explode(' ', $translation_text);
            
            // Get the first 5 words or less for the title
            $title_words = array_slice($words, 0, 5);
            $post_title = implode(' ', $title_words);

            // Limit title to maximum 45 characters
            $post_title = mb_substr($post_title, 0, 45);
            
            $tags = array();
            
            // Calculate the remaining characters for tags
            $remaining_chars = 50;
            
            // Determine the tag words based on the remaining characters and word count
            foreach ($words as $word) {
                if ($remaining_chars >= mb_strlen($word)) {
                    $tags[] = sanitize_title($word);
                    $remaining_chars -= mb_strlen($word) + 1; // Include space character
                } else {
                    break;
                }
            }

$translation_text = trim($translation->translated_text);
 
// Split translation text into words
$words = explode(' ', $translation_text);
 
// Get the first 5 words or less for the title
$title_words = array_slice($words, 0, 5);
$post_title = implode(' ', $title_words);

// Limit title to maximum 45 characters
$post_title = mb_substr($post_title, 0, 45);

if (post_exists($post_title)){
    return false;
}
 
$tags = array();
 
// Calculate the remaining characters for tags
$remaining_chars = 50;
 
// Determine the tag words based on the remaining characters and word count
foreach ($words as $word) {
    if ($remaining_chars >= mb_strlen($word)) {
        $tags[] = sanitize_title($word);
        $remaining_chars -= mb_strlen($word) + 1; // Include space character
    } else {
        break;
    }
}