View file File name : title-presenter.php Content :<?php namespace Yoast\WP\SEO\Presenters; use Yoast\WP\SEO\Presentations\Indexable_Presentation; /** * Presenter class for the document title. */ class Title_Presenter extends Abstract_Indexable_Tag_Presenter { /** * The tag key name. * * @var string */ protected $key = 'title'; /** * The tag format including placeholders. * * @var string */ protected $tag_format = '<title>%s</title>'; /** * The method of escaping to use. * * @var string */ protected $escaping = 'html'; /** * Gets the raw value of a presentation. * * @return string The raw value. */ public function get() { // This ensures backwards compatibility with other plugins using this filter as well. \add_filter( 'pre_get_document_title', [ $this, 'get_title' ], 15 ); $title = \wp_get_document_title(); \remove_filter( 'pre_get_document_title', [ $this, 'get_title' ], 15 ); return $title; } /** * Returns a tag in the head. * * @return string The tag. */ public function present() { $value = $this->get(); if ( \is_string( $value ) && $value !== '' ) { return \sprintf( $this->tag_format, $this->escape_value( $value ) ); } return ''; } /** * Returns the presentation title. * * @return string The title. */ public function get_title() { $title = $this->replace_vars( $this->presentation->title ); /** * Filter: 'wpseo_title' - Allow changing the Yoast SEO generated title. * * @param string $title The title. * @param Indexable_Presentation $presentation The presentation of an indexable. */ $title = \apply_filters( 'wpseo_title', $title, $this->presentation ); $title = $this->helpers->string->strip_all_tags( $title ); return \trim( $title ); } }