Eu resolveriaisso com umfiltroem WP_Query.Um que detecta uma variável de consultaextrae usaisso como oprefixo dotítulo.

 add_filter( 'posts_where', 'wpse18703_posts_where', 10, 2 );
function wpse18703_posts_where( $where, &$wp_query )
{
    global $wpdb;
    if ( $wpse18703_title = $wp_query->get( 'wpse18703_title' ) ) {
        $where .= ' AND ' . $wpdb->posts . '.post_title LIKE \'' . esc_sql( $wpdb->esc_like( $wpse18703_title ) ) . '%\'';
    }
    return $where;
}
 

Destaforma,você aindapode ligar WP_Query,você acabou depassar otítulo como o wpse18703_title argumento (ou alterar onomepara algomais curto).

I would solve this with a filter on WP_Query. One that detects an extra query variable and uses that as the prefix of the title.

add_filter( 'posts_where', 'wpse18703_posts_where', 10, 2 );
function wpse18703_posts_where( $where, &$wp_query )
{
    global $wpdb;
    if ( $wpse18703_title = $wp_query->get( 'wpse18703_title' ) ) {
        $where .= ' AND ' . $wpdb->posts . '.post_title LIKE \'' . esc_sql( $wpdb->esc_like( $wpse18703_title ) ) . '%\'';
    }
    return $where;
}

This way you can still call WP_Query, you just pass the title as the wpse18703_title argument (or change the name to something shorter).

simplificado:

 function title_filter( $where, &$wp_query )
{
    global $wpdb;
    // 2. pull the custom query in here:
    if ( $search_term = $wp_query->get( 'search_prod_title' ) ) {
        $where .= ' AND ' . $wpdb->posts . '.post_title LIKE \'%' . esc_sql( like_escape( $search_term ) ) . '%\'';
    }
    return $where;
}

$args = array(
    'post_type' => 'product',
    'posts_per_page' => $page_size,
    'paged' => $page,
    // 1. define a custom query var here to pass your term through:
    'search_prod_title' => $search_term,
    'post_status' => 'publish',
    'orderby'     => 'title', 
    'order'       => 'ASC'
);

add_filter( 'posts_where', 'title_filter', 10, 2 );
$wp_query = new WP_Query($args);
remove_filter( 'posts_where', 'title_filter', 10 );
return $wp_query;
 

Simplified:

function title_filter( $where, &$wp_query )
{
    global $wpdb;
    // 2. pull the custom query in here:
    if ( $search_term = $wp_query->get( 'search_prod_title' ) ) {
        $where .= ' AND ' . $wpdb->posts . '.post_title LIKE \'%' . esc_sql( like_escape( $search_term ) ) . '%\'';
    }
    return $where;
}

$args = array(
    'post_type' => 'product',
    'posts_per_page' => $page_size,
    'paged' => $page,
    // 1. define a custom query var here to pass your term through:
    'search_prod_title' => $search_term,
    'post_status' => 'publish',
    'orderby'     => 'title', 
    'order'       => 'ASC'
);

add_filter( 'posts_where', 'title_filter', 10, 2 );
$wp_query = new WP_Query($args);
remove_filter( 'posts_where', 'title_filter', 10 );
return $wp_query;

queria atualizareste código que vocêstrabalharampara o WordPress 4.0e acima como Esc_SQL () é reprovadoem 4.0maior.

 function title_filter($where, &$wp_query){
    global $wpdb;

    if($search_term = $wp_query->get( 'search_prod_title' )){
        /*using the esc_like() in here instead of other esc_sql()*/
        $search_term = $wpdb->esc_like($search_term);
        $search_term = ' \'%' . $search_term . '%\'';
        $where .= ' AND ' . $wpdb->posts . '.post_title LIKE '.$search_term;
    }

    return $where;
}
 

resto domaterial é omesmo.

Também quero dizer que vocêpode usar s variável dentro de argumentos WP_Queryparapassar ostermos depesquisa,quetambémprocurarápelotítulo dapostagem queeu acredito.

assim:

 $args = array(
    'post_type' => 'post',
    's' => $search_term,
    'post_status' => 'publish',
    'orderby'     => 'title', 
    'order'       => 'ASC'        
);
$wp_query = new WP_Query($args);
 

Wanted to update this code you guys worked on for the wordpress 4.0 and above as esc_sql() is deprecated in 4.0 higher.

function title_filter($where, &$wp_query){
    global $wpdb;

    if($search_term = $wp_query->get( 'search_prod_title' )){
        /*using the esc_like() in here instead of other esc_sql()*/
        $search_term = $wpdb->esc_like($search_term);
        $search_term = ' \'%' . $search_term . '%\'';
        $where .= ' AND ' . $wpdb->posts . '.post_title LIKE '.$search_term;
    }

    return $where;
}

Rest of the stuff is same.

Also I want to point out you can use s variable within WP_Query arguments to pass search terms, which will also search for post title i believe.

Like this:

$args = array(
    'post_type' => 'post',
    's' => $search_term,
    'post_status' => 'publish',
    'orderby'     => 'title', 
    'order'       => 'ASC'        
);
$wp_query = new WP_Query($args);

Com alguma solução vulnerávelpostada aqui,eu venho com uma versão simplificadae sanitizada.

Primeiro,criamos umafunçãopara ofiltro posts_where quepermitemostrar apenaspostagens correspondentes condiçõesespecíficas:

 function cc_post_title_filter($where, &$wp_query) {
    global $wpdb;
    if ( $search_term = $wp_query->get( 'cc_search_post_title' ) ) {
        $where .= ' AND ' . $wpdb->posts . '.post_title LIKE \'%' . $wpdb->esc_like( $search_term ) . '%\'';
    }
    return $where;
}
 

Agora adicionamos cc_search_post_titleem nossos argumentos de consulta:

 $args = array(
    'cc_search_post_title' => $search_term, // search post title only
    'post_status' => 'publish',
);
 

e finalmenteenrole ofiltro ao redor da consulta:

 add_filter( 'posts_where', 'cc_post_title_filter', 10, 2 );
$query = new WP_Query($args);
remove_filter( 'posts_where', 'cc_post_title_filter', 10 );
 

usandoget_posts ()

Certasfunções que recuperampostsnãoexecutamfiltros,portanto,ofiltro Posts_where que você anexanãomodificará a consulta. Se vocêplaneja usar get_posts()para consultar suaspostagens,vocêprecisa definir suppress_filtersparafalseem suamatriz de argumentos:

 $args = array(
    'cc_search_post_title' => $search_term,
    'suppress_filters' => FALSE,
    'post_status' => 'publish',
);
 

Agora vocêpode usar get_posts():

 add_filter( 'posts_where', 'cc_post_title_filter', 10, 2 );
$posts = get_posts($args);
remove_filter( 'posts_where', 'cc_post_title_filter', 10 );
 

E quanto aoparâmetro s?

Oparâmetro sestá disponível:

 $args = array(
    's' => $search_term,
);
 

Ao adicionar seutermo depesquisanotrabalho sparâmetroe eleiráprocurarnotítulo dapostagem,eletambém será Pesquisar o conteúdo dopost.

O que acontece com oparâmetro title quefoi adicionado com WP 4.4?

Passando umtermo depesquisanotítulo titleparâmetro:

 $args = array(
    'title' => $search_term,
);
 

diferenciamaiúsculase minúsculase LIKE,não %LIKE%. Estapesquisamédiapara hellonão retornarápost comtítulo Hello World ou hello.

With some vulnerable solution posted here, I come with a bit simplified and sanitized version.

First, we create a function for the posts_where filter which allows you to only show posts matching specific conditions:

function cc_post_title_filter($where, &$wp_query) {
    global $wpdb;
    if ( $search_term = $wp_query->get( 'cc_search_post_title' ) ) {
        $where .= ' AND ' . $wpdb->posts . '.post_title LIKE \'%' . $wpdb->esc_like( $search_term ) . '%\'';
    }
    return $where;
}

Now we add cc_search_post_title into our query arguments:

$args = array(
    'cc_search_post_title' => $search_term, // search post title only
    'post_status' => 'publish',
);

And finally wrap the filter around the query:

add_filter( 'posts_where', 'cc_post_title_filter', 10, 2 );
$query = new WP_Query($args);
remove_filter( 'posts_where', 'cc_post_title_filter', 10 );

Using get_posts()

Certain functions which retrieve posts do not run filters, so the posts_where filter functions you attach will not modify the query. If you plan to use get_posts() to query your posts, you need to set suppress_filters to false in your argument array:

$args = array(
    'cc_search_post_title' => $search_term,
    'suppress_filters' => FALSE,
    'post_status' => 'publish',
);

Now you can use get_posts():

add_filter( 'posts_where', 'cc_post_title_filter', 10, 2 );
$posts = get_posts($args);
remove_filter( 'posts_where', 'cc_post_title_filter', 10 );

What about the s parameter?

The s parameter is available:

$args = array(
    's' => $search_term,
);

While adding your search term into the s parameter work and it will search the post title, it will also search the post content.

What about the title parameter which was added with WP 4.4?

Passing a search term into the title parameter:

$args = array(
    'title' => $search_term,
);

Is case sensitive and LIKE, not %LIKE%. This mean search for hello will not return post with title Hello World or Hello.

Construindoem outras respostas antes demim,parafornecerflexibilidadena situaçãoem que você desejapesquisar umpost que contém umapalavraem um campo demeta ounotítulo dopost,eu douessa opção através do argumento "title_filter_relation". Nestaimplementação,eu sópermito "ou" ou "e"insumos com umpadrão de "e."

 function title_filter($where, &$wp_query){
    global $wpdb;
    if($search_term = $wp_query->get( 'title_filter' )){
        $search_term = $wpdb->esc_like($search_term); //instead of esc_sql()
        $search_term = ' \'%' . $search_term . '%\'';
        $title_filter_relation = (strtoupper($wp_query->get( 'title_filter_relation'))=='OR' ? 'OR' : 'AND');
        $where .= ' '.$title_filter_relation.' ' . $wpdb->posts . '.post_title LIKE '.$search_term;
    }
    return $where;
}
 

Aquiestá umexemplo do códigoem açãopara umtipo depostagemmuito simples "FAQ",onde a questão é oprópriotítulo:

 add_filter('posts_where','title_filter',10,2);
$s1 = new WP_Query( array(
    'post_type' => 'faq',
    'posts_per_page' => -1,
    'title_filter' => $q,
    'title_filter_relation' => 'OR',
    'post_status' => 'publish',
    'orderby'     => 'title', 
    'order'       => 'ASC',
    'meta_query' => array(
        'relation' => 'OR',
        array(
            'key' => 'faq_answer',
            'value' => $q,
            'compare' => 'LIKE'
        )
    )
));
remove_filter('posts_where','title_filter',10,2);
 

Building on other answers before me, to provide flexibility in the situation where you want to search a post that contains a word in a meta field OR in the title of the post, I give that option via the argument "title_filter_relation." In this implementation, I only allow for "OR" or "AND" inputs with a default of "AND."

function title_filter($where, &$wp_query){
    global $wpdb;
    if($search_term = $wp_query->get( 'title_filter' )){
        $search_term = $wpdb->esc_like($search_term); //instead of esc_sql()
        $search_term = ' \'%' . $search_term . '%\'';
        $title_filter_relation = (strtoupper($wp_query->get( 'title_filter_relation'))=='OR' ? 'OR' : 'AND');
        $where .= ' '.$title_filter_relation.' ' . $wpdb->posts . '.post_title LIKE '.$search_term;
    }
    return $where;
}

Here's an example of the code in action for a very simple post type "faq" where the question is the post title itself:

add_filter('posts_where','title_filter',10,2);
$s1 = new WP_Query( array(
    'post_type' => 'faq',
    'posts_per_page' => -1,
    'title_filter' => $q,
    'title_filter_relation' => 'OR',
    'post_status' => 'publish',
    'orderby'     => 'title', 
    'order'       => 'ASC',
    'meta_query' => array(
        'relation' => 'OR',
        array(
            'key' => 'faq_answer',
            'value' => $q,
            'compare' => 'LIKE'
        )
    )
));
remove_filter('posts_where','title_filter',10,2);