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exceptions
options
sitemaps
Files:
class-addon-manager.php
class-my-yoast-api-request.php
class-post-type.php
class-rewrite.php
class-upgrade-history.php
class-upgrade.php
class-wpseo-admin-bar-menu.php
class-wpseo-content-images.php
class-wpseo-custom-fields.php
class-wpseo-custom-taxonomies.php
class-wpseo-image-utils.php
class-wpseo-installation.php
class-wpseo-meta.php
class-wpseo-primary-term.php
class-wpseo-rank.php
class-wpseo-replace-vars.php
class-wpseo-replacement-variable.php
class-wpseo-shortlinker.php
class-wpseo-statistics.php
class-wpseo-utils.php
class-yoast-dynamic-rewrites.php
date-helper.php
index.php
interface-wpseo-wordpress-ajax-integration.php
interface-wpseo-wordpress-integration.php
language-utils.php
wpseo-functions-deprecated.php
wpseo-functions.php
wpseo-non-ajax-functions.php
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Edit File: class-wpseo-content-images.php
<?php /** * WPSEO plugin file. * * @package WPSEO */ /** * WPSEO_Content_Images. */ class WPSEO_Content_Images { /** * Retrieves images from the post content. * * @param int $post_id The post ID. * @param WP_Post|null $post The post object. * * @return array An array of images found in this post. */ public function get_images( $post_id, $post = null ) { return $this->get_images_from_content( $this->get_post_content( $post_id, $post ) ); } /** * Grabs the images from the content. * * @param string $content The post content string. * * @return array An array of image URLs. */ public function get_images_from_content( $content ) { if ( ! is_string( $content ) ) { return []; } $content_images = $this->get_img_tags_from_content( $content ); $images = array_map( [ $this, 'get_img_tag_source' ], $content_images ); $images = array_filter( $images ); $images = array_unique( $images ); $images = array_values( $images ); // Reset the array keys. return $images; } /** * Gets the image tags from a given content string. * * @param string $content The content to search for image tags. * * @return array An array of `<img>` tags. */ private function get_img_tags_from_content( $content ) { if ( strpos( $content, '<img' ) === false ) { return []; } preg_match_all( '`<img [^>]+>`', $content, $matches ); if ( isset( $matches[0] ) ) { return $matches[0]; } return []; } /** * Retrieves the image URL from an image tag. * * @param string $image Image HTML element. * * @return string|bool The image URL on success, false on failure. */ private function get_img_tag_source( $image ) { preg_match( '`src=(["\'])(.*?)\1`', $image, $matches ); if ( isset( $matches[2] ) && filter_var( $matches[2], FILTER_VALIDATE_URL ) ) { return $matches[2]; } return false; } /** * Retrieves the post content we want to work with. * * @param int $post_id The post ID. * @param WP_Post|array|null $post The post. * * @return string The content of the supplied post. */ private function get_post_content( $post_id, $post ) { if ( $post === null ) { $post = get_post( $post_id ); } if ( $post === null ) { return ''; } /** * Filter: 'wpseo_pre_analysis_post_content' - Allow filtering the content before analysis. * * @param string $post_content The Post content string. * @param WP_Post $post The current post. */ $content = apply_filters( 'wpseo_pre_analysis_post_content', $post->post_content, $post ); if ( ! is_string( $content ) ) { $content = ''; } return $content; } }
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