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✏️ Editing: class-attachment.php

<?php
/**
 * The Attachment helpers.
 *
 * @since      0.9.0
 * @package    RankMath
 * @subpackage RankMath\Helpers
 * @author     Rank Math <support@rankmath.com>
 */

namespace RankMath\Helpers;

use RankMath\Helper;

defined( 'ABSPATH' ) || exit;

/**
 * Attachment trait.
 */
class Attachment {

/**
	 * Check if a post can be included in sitemap.
	 *
	 * @param  int $attachment_id Attachment ID to check.
	 * @return bool
	 */
	public static function attachment_in_sitemap( $attachment_id ) {
		if ( empty( $attachment_id ) ) {
			return false;
		}

$exclude_sitemap = get_post_meta( $attachment_id, 'rank_math_exclude_sitemap', true );

return empty( $exclude_sitemap );
	}

/**
	 * Generate local path for an attachment image.
	 * Credit: https://wordpress.stackexchange.com/a/182519
	 *
	 * @param int    $attachment_id  Attachment ID.
	 * @param string $size Size.
	 */
	public static function get_scaled_image_path( $attachment_id, $size = 'thumbnail' ) {
		$file = get_attached_file( $attachment_id, true );
		if ( empty( $size ) || $size === 'full' ) {
			// For the original size get_attached_file is fine.
			return realpath( $file );
		}

if ( ! wp_attachment_is_image( $attachment_id ) ) {
			return false; // the ID is not referring to a media.
		}

$info = image_get_intermediate_size( $attachment_id, $size );
		if ( ! is_array( $info ) || ! isset( $info['file'] ) ) {
			return false; // Probably a bad size argument.
		}

return realpath( str_replace( wp_basename( $file ), $info['file'], $file ) );
	}

/**
	 * Grabs an image alt text.
	 *
	 * @param int $attachment_id The attachment ID.
	 *
	 * @return string The image alt text.
	 */
	public static function get_alt_tag( $attachment_id ) {
		return (string) get_post_meta( $attachment_id, '_wp_attachment_image_alt', true );
	}

/**
	 * Get the relative path of the image.
	 *
	 * @codeCoverageIgnore
	 *
	 * @param string $img Image URL.
	 *
	 * @return string The expanded image URL.
	 */
	public static function get_relative_path( $img ) {
		if ( '/' !== $img[0] ) {
			return $img;
		}

// If it's a relative URL, it's relative to the domain, not necessarily to the WordPress install, we
		// want to preserve domain name and URL scheme (http / https) though.
		$parsed_url = wp_parse_url( home_url() );

return $parsed_url['scheme'] . '://' . $parsed_url['host'] . $img;
	}

/**
	 * Find an attachment ID for a given URL.
	 *
	 * @codeCoverageIgnore
	 *
	 * @param string $url The URL to find the attachment for.
	 *
	 * @return int The found attachment ID, or 0 if none was found.
	 */
	public static function get_by_url( $url ) {
		// Because get_by_url won't work on resized versions of images, we strip out the size part of an image URL.
		$url = preg_replace( '/(.*)-\d+x\d+\.(jpg|png|gif)$/', '$1.$2', $url );

$id = function_exists( 'wpcom_vip_attachment_url_to_postid' ) ? wpcom_vip_attachment_url_to_postid( $url ) : self::url_to_postid( $url );

return absint( $id );
	}

/**
	 * Implements the attachment_url_to_postid with use of WP Cache.
	 *
	 * @codeCoverageIgnore
	 *
	 * @link https://dotlayer.com/20-wordpress-core-functions-that-dont-scale-and-how-to-work-around-it/
	 *
	 * @param string $url The attachment URL for which we want to know the Post ID.
	 *
	 * @return int The Post ID belonging to the attachment, 0 if not found.
	 */
	private static function url_to_postid( $url ) {
		$cache_key = sprintf( 'rank_math_attachment_url_post_id_%s', md5( $url ) );

// Set the ID based on the hashed url in the cache.
		$id = wp_cache_get( $cache_key );

if ( 'not_found' === $id ) {
			return 0;
		}

// ID is found in cache, return.
		if ( false !== $id ) {
			return $id;
		}

// phpcs:ignore WordPress.VIP.RestrictedFunctions -- We use the WP COM version if we can, see above.
		$id = attachment_url_to_postid( $url );

if ( empty( $id ) ) {
			wp_cache_set( $cache_key, 'not_found', 'default', ( 12 * HOUR_IN_SECONDS + wp_rand( 0, ( 4 * HOUR_IN_SECONDS ) ) ) );
			return 0;
		}

// We have the Post ID, but it's not in the cache yet. We do that here and return.
		wp_cache_set( $cache_key, $id, 'default', ( 24 * HOUR_IN_SECONDS + wp_rand( 0, ( 12 * HOUR_IN_SECONDS ) ) ) );

return $id;
	}
}

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