CODEWITHSUNDEEP
phpwordpress
Atif
Atif

Reputation: 10880

WordPress Get the Page ID outside the loop

I want to get the page ID before starting the loop in WordPress. I am using 

$page = get_query_var('page_id');

Apparently, it returns nothing.

I just want to check a page for its ID and add a class to <body> tag based on it.

Upvotes: 80

Views: 112188

Answers (11)

Ever CR
Ever CR

Reputation: 351

I have done it in the following way and it has worked perfectly for me.

First declared a global variable in the header.php, assigning the ID of the post or page before it changes, since the LOOP assigns it the ID of the last entry shown:

$GLOBALS['pageid] = $wp_query->get_queried_object_id();

And to use anywhere in the template, example in the footer.php:

echo $GLOBALS['pageid];

Upvotes: 2

Jarrett Barnett
Jarrett Barnett

Reputation: 803

If you're on a page and this does not work:

$page_object = get_queried_object();
$page_id     = get_queried_object_id();

you can try to build the permalink manually with PHP so you can lookup the post ID:

// get or make permalink
$url = !empty(get_the_permalink()) ? get_the_permalink() : (isset($_SERVER['HTTPS']) ? "https" : "http") . "://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
$permalink = strtok($url, '?');

// get post_id using url/permalink
$post_id = url_to_postid($url);

// want the post or postmeta? use get_post() or get_post_meta()
$post = get_post($post_id);
$postmeta = get_post_meta($post_id);

It may not catch every possible permalink (especially since I'm stripping out the query string), but you can modify it to fit your use case.

Upvotes: 1

Braj Kishor Sah
Braj Kishor Sah

Reputation: 149

Use below two lines of code to get current page or post ID 

global $post;
echo $post->ID;

Upvotes: 0

Nadeem Khan
Nadeem Khan

Reputation: 3424

You can also create a generic function to get the ID of the post, whether its outside or inside the loop (handles both the cases):

<?php

/**
 * @uses WP_Query
 * @uses get_queried_object()
 * @see get_the_ID()
 * @return int
 */
function get_the_post_id() {
  if (in_the_loop()) {
       $post_id = get_the_ID();
  } else {
       global $wp_query;
       $post_id = $wp_query->get_queried_object_id();
         }
  return $post_id;
} ?>

And simply do:

$page_id = get_the_post_id();

Upvotes: 10

ryscript
ryscript

Reputation: 111

Use this global $post instead:

global $post;
echo $post->ID;

Upvotes: 7

edcv
edcv

Reputation: 33

If you are out of the Loop of WordPress you can not use any of the method of wordpress so you must use pure php.

You can use this code. And sure will help you :)

$page_id = @$_GET['page_id'];

if (!is_numeric($page_id)) {
    // Then the uri must be in friendly format aka /my_domain/category/onepage/
    // Try this
    //$path = '/www/public_html/index.php/';
    ///$path = '/my_domain/category/onepage/';
    $path = $_SERVER['REQUEST_URI'];
    // Clean the uri
    //$path = str_replace('/', '', $page);
    $path = str_replace('.php', '', $path);
    //$path = str_replace('?s=', '', $path);
    $path = $path ? $path : 'default';

    $path_len = strlen($path);
    $last_char = substr($path, $path_len -1);
    //echo $last_char;
    $has_slash = strpos($last_char, "/");
    //echo $has_slash;
    if ($has_slash === 0) :
        $path = substr($path, 0, $path_len -1);
    elseif ($has_slash === null) :
        $path = substr($path, 0, $path_len);
    endif;
    //echo "path: ".$path; // '/www/public_html/index'
    $page = substr(strrchr($path, "/"), 1);
    echo "page: ".$page; // 'index'
}

$my_page_id = 31;
$my_page = 'mypage';

//echo "page: ".$page;
//echo "page_id ".$page_id;
if($page_id == $my_page_id || $page == $my_page) 
{
    // your stuff....
}

Enjoy!

Upvotes: -3

banesto
banesto

Reputation: 1672

If you by any means searched this topic because of the post page (index page alternative when using static front page), then the right answer is this:

if (get_option('show_on_front') == 'page') {
    $page_id = get_option('page_for_posts');
    echo get_the_title($page_id);
}

(taken from Forrst | Echo WordPress "Posts Page" title - Some code from tammyhart)

Upvotes: 4

Banna
Banna

Reputation: 11

This is the correct code.

echo $post->ID;

Upvotes: -3

TheDeadMedic
TheDeadMedic

Reputation: 9997

If you're using pretty permalinks, get_query_var('page_id') won't work.

Instead, get the queried object ID from the global $wp_query:

// Since 3.1 - recommended!
$page_object = get_queried_object();
$page_id     = get_queried_object_id();


// "Dirty" pre 3.1
global $wp_query;

$page_object = $wp_query->get_queried_object();
$page_id     = $wp_query->get_queried_object_id();

Upvotes: 160

jruzafa
jruzafa

Reputation: 4276

This function get id off a page current.

get_the_ID();

Upvotes: 0

nikc.org
nikc.org

Reputation: 16952

You can use is_page($page_id) outside the loop to check.

Upvotes: 0

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