そのスラッグからページリンクを取得することは可能ですか？

これは、Tom McFarlinが彼のブログで公開した方法です:

 /**
 * Returns the permalink for a page based on the incoming slug.
 *
 * @param   string  $slug   The slug of the page to which we're going to link.
 * @return  string          The permalink of the page
 * @since   1.0
 */
function wpse_4999_get_permalink_by_slug( $slug, $post_type = '' ) {

    // Initialize the permalink value
    $permalink = null;

    // Build the arguments for WP_Query
    $args = array(
        'name'          => $slug,
        'max_num_posts' => 1
    );

    // If the optional argument is set, add it to the arguments array
    if( '' != $post_type ) {
        $args = array_merge( $args, array( 'post_type' => $post_type ) );
    }

    // Run the query (and reset it)
    $query = new WP_Query( $args );
    if( $query->have_posts() ) {
        $query->the_post();
        $permalink = get_permalink( get_the_ID() );
        wp_reset_postdata();
    }
    return $permalink;
}
 

カスタム投稿タイプと組み込みの投稿タイプ(postやpageなど)で機能します.

This is a method published by Tom McFarlin on his blog:

/**
 * Returns the permalink for a page based on the incoming slug.
 *
 * @param   string  $slug   The slug of the page to which we're going to link.
 * @return  string          The permalink of the page
 * @since   1.0
 */
function wpse_4999_get_permalink_by_slug( $slug, $post_type = '' ) {

    // Initialize the permalink value
    $permalink = null;

    // Build the arguments for WP_Query
    $args = array(
        'name'          => $slug,
        'max_num_posts' => 1
    );

    // If the optional argument is set, add it to the arguments array
    if( '' != $post_type ) {
        $args = array_merge( $args, array( 'post_type' => $post_type ) );
    }

    // Run the query (and reset it)
    $query = new WP_Query( $args );
    if( $query->have_posts() ) {
        $query->the_post();
        $permalink = get_permalink( get_the_ID() );
        wp_reset_postdata();
    }
    return $permalink;
}

It works with custom post types and built-in post types (such as post and page).

階層ページはそのように機能しないため、受け入れられた答えは間違っています.簡単に言えば、スラッグは必ずしもページや投稿のパスではありません.例えば.ページに子などがあります.パスはparent-slug/child-slugになり、get_page_by_pathはこの方法でchild-slugを見つけることができません..適切な解決策は次のとおりです.

 function mycoolprefix_post_by_slug($the_slug, $post_type = "page"){
 $args = array(
   'name'        => $the_slug,
   'post_type'   => $post_type,
   'post_status' => 'publish',
   'numberposts' => 1
 );
 $my_page = get_posts($args)[0];
 return $my_page;
}

<a href="<?php echo mycoolprefix_post_by_slug('map'); ?>">Map</a>
 

the accepted answer is wrong because hierarchical pages don't work like that. Simply put, the slug is not always the path of the page or post. E.g. your page has a child etc. the path will be parent-slug/child-slug and get_page_by_path will fail to find child-slug this way. The proper solution is this:

function mycoolprefix_post_by_slug($the_slug, $post_type = "page"){
 $args = array(
   'name'        => $the_slug,
   'post_type'   => $post_type,
   'post_status' => 'publish',
   'numberposts' => 1
 );
 $my_page = get_posts($args)[0];
 return $my_page;
}

<a href="<?php echo mycoolprefix_post_by_slug('map'); ?>">Map</a>

これを試す:

 <a href="<?php echo get_page_link( get_page_by_path( 'map' ) ); ?>">Map</a>
 

get_page_by_path( 'path' )は、ページ/投稿オブジェクトを返します.これは、投稿/ページオブジェクトを受け入れてパーマリンクを返すため、get_page_link()で使用できます.

Try This:

<a href="<?php echo get_page_link( get_page_by_path( 'map' ) ); ?>">Map</a>

get_page_by_path( 'path' ) returns page/post object which can be then used by get_page_link() as it accepts post/page object and returns permalink.

     function theme_get_permalink_by_title( $title ) {

    // Initialize the permalink value
    $permalink = null;

    // Try to get the page by the incoming title
    $page = get_page_by_title( strtolower( $title ) );

    // If the page exists, then let's get its permalink
    if( null != $page ) {
        $permalink = get_permalink( $page->ID );
    } // end if

    return $permalink;

} // end theme_get_permalink_by_title
 

この機能を使用する

 if( null == theme_get_permalink_by_title( 'Register For This Site' ) ) {
  // The permalink doesn't exist, so handle this however you best see fit.
} else {
  // The page exists, so do what you need to do.
} // end if/else
 

    function theme_get_permalink_by_title( $title ) {

    // Initialize the permalink value
    $permalink = null;

    // Try to get the page by the incoming title
    $page = get_page_by_title( strtolower( $title ) );

    // If the page exists, then let's get its permalink
    if( null != $page ) {
        $permalink = get_permalink( $page->ID );
    } // end if

    return $permalink;

} // end theme_get_permalink_by_title

Use this function by

if( null == theme_get_permalink_by_title( 'Register For This Site' ) ) {
  // The permalink doesn't exist, so handle this however you best see fit.
} else {
  // The page exists, so do what you need to do.
} // end if/else