Come ottengo l'ID di un post (pagina o CPT) da un titolo o da uno slug?

puoi usare questafunzione che salta dagoogle "ottienipostpertitolo"

 /**
* Recupera unpost datoiltitolo.
*
* @ utilizza $ wpdb
*
* @param string $post_title Titolo dellapagina
* @param string $post_typeposttype ('post','page','any customtype')
* @param string $ output Facoltativo.Tipo di output.OBJECT,ARRAY_N o ARRAY_A.
* @returnmisto
*/
funzioneget_post_by_title ($page_title,$post_type='post',$ output=OBJECT) {
 global $ wpdb;
        $post=$ wpdb- >get_var ($ wpdb- >prepare ("SELEZIONA ID DA $ wpdb- >posts WHEREpost_title=% s ANDpost_type=% s",$page_title,$post_type));
 if ($post)
            returnget_post ($post,$ output);

    returnnull;
}
 

you can use this function that jumps by google "get post by title"

/**
* Retrieve a post given its title.
*
* @uses $wpdb
*
* @param string $post_title Page title
* @param string $post_type post type ('post','page','any custom type')
* @param string $output Optional. Output type. OBJECT, ARRAY_N, or ARRAY_A.
* @return mixed
*/
function get_post_by_title($page_title, $post_type ='post' , $output = OBJECT) {
    global $wpdb;
        $post = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_title = %s AND post_type= %s", $page_title, $post_type));
        if ( $post )
            return get_post($post, $output);

    return null;
}

Timanca unparametro difunzione.Inserisci un valorenulloperil secondoparametro opzionale $ outpute questafunzione dovrebbefunzionareperte.

 get_page_by_title('My post title', null, 'customposttype');
 

Mi sono appenaimbattutonello stessoproblemae l'aggiunta delnull lo ha risoltoperme.

You are missing a function parameter. Throw a null in for the second optional paramter $output and this function should work for you.

get_page_by_title('My post title', null, 'customposttype');

I just ran into the same issue and adding the null fixed it for me.

Tendo aevitare le query dirette al database.Invece,utilizzo l'oggetto WP_Queryper analizzare le coseperme.

Questa è,fondamentalmente,unafunzione che utilizzoin uno deimiei temiper ottenere unpostbasato su un dato slug:

 function get_post_id( $slug, $post_type ) {
    $query = new WP_Query(
        array(
            'name' => $slug,
            'post_type' => $post_type
        )
    );

    $query->the_post();

    return get_the_ID();
}
 

Questo creerà una query utilizzando l'API WPper recuperare unpost di untipo specifico con un dato slug,eseguirà lenormalifunzioni di loop sul risultatoe restituirà l'ID delpost.Potresti anche usarloper restituire l'interopostmodificando unpo 'lafunzione,ma dipende date.

I tend to shy away from direct DB queries. Instead, I use the WP_Query object to parse things for me.

This is, basically, a function I use in one of my themes to get a post based on a given slug:

function get_post_id( $slug, $post_type ) {
    $query = new WP_Query(
        array(
            'name' => $slug,
            'post_type' => $post_type
        )
    );

    $query->the_post();

    return get_the_ID();
}

This will create a query using the WP API to fetch a post of a specific type with a given slug, will run the regular loop functions on the result, and return the ID of the post. You could also use it to return the entire post by modifying the function a bit, but that's up to you.

Ormai ha qualche anno,ma viene ancora visualizzato quando lo cerchi su Google.Quindi,ecco unmodo sempliceperfarlo:

 $page = get_page_by_title( 'my post title' );
 

o

 $page = get_post_ID_by_title('my post title', OBJECT, 'customposttype');
 

Quindi utilizza l'oggetto $pageper acquisire l'ID:

 $page->ID
 

This is a few years old now, but it still pops up when searching for this on Google. So, here's a simple way to do it:

$page = get_page_by_title( 'my post title' );

or

$page = get_post_ID_by_title('my post title', OBJECT, 'customposttype');

Then just use the $page object to grab the ID:

$page->ID

Attualmente (WP> 4.9.2)troveraiiltuo "qualsiasi"post/pagina,ecc.pertitolo/slugin questomodo:

 $page = get_posts(
    array(
        //'name'      => 'your-post-slug', // by post slug
        'title'      => 'Your post title', // by post title
        'post_type' => 'page' // post type of your preference
    )
);

if ($page = $page[0]) // First/lowest ID taken if many objects
{
    // Then you do whatever is needed...
    // $id = $page->id;
    // $content = $page->post_content;
    // or $content = apply_filters('the_content', $page->post_content);
    // etc.
}
 

Currently (WP >4.9.2) you'll find your "any" given post/page etc. by title/slug this way:

$page = get_posts(
    array(
        //'name'      => 'your-post-slug', // by post slug
        'title'      => 'Your post title', // by post title
        'post_type' => 'page' // post type of your preference
    )
);

if ($page = $page[0]) // First/lowest ID taken if many objects
{
    // Then you do whatever is needed...
    // $id = $page->id;
    // $content = $page->post_content;
    // or $content = apply_filters('the_content', $page->post_content);
    // etc.
}