<?php
/**
* Variables
*
* @package surerank
* @since 0.0.1
*/
namespace SureRank\Inc\Functions;
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly.
}
use SureRank\Inc\Meta_Variables\Post;
use SureRank\Inc\Meta_Variables\Site;
use SureRank\Inc\Meta_Variables\Term;
/**
* Variables
*
* @package surerank
* @since 0.0.1
*/
class Variables {
/**
* We will replace these keys with the actual values.
*
* @var array<string, mixed>|array<int, array<string, mixed>> $replacement_fields This array contains the smart tags like %title%, %description% etc.
* Further we need to add all meta fields name wherever we want to replace the smart tags.
*
* @since 1.0.0
*/
public static $replacement_fields = [
// Seo meta popup fields.
'page_title',
'page_description',
// Seo meta popup field. Social meta fields.
'facebook_title',
'facebook_description',
'twitter_title',
'twitter_description',
];
/**
* This function will replace the variables in the string with the actual values.
*
* @param array<int|string, mixed> $data array of strings which needs replacement.
* @param int $post_id Post ID.
*
* @since 1.0.0
* @return array<string, mixed>
*/
public static function replace( $data, $post_id ) {
if ( empty( Validate::array( $data ) || ! $post_id ) ) {
return [];
}
$chunks = [];
$replacement_strings = [];
$output = [];
foreach ( self::$replacement_fields as $key ) {
if ( ! empty( $data[ $key ] ) ) {
$string = $data[ $key ];
$chunks = array_merge( $chunks, self::get_chunks( $string ) );
foreach ( $chunks as $chunk ) {
$replacement_strings[ '%' . $chunk . '%' ] = self::get_key_value( $chunk, $post_id );
}
$output[ $key ] = strtr( $string, $replacement_strings );
}
}
return array_merge( $data, $output );
}
/**
* Get key value
*
* @param string $key Key to search for.
* @param int $post_id Post ID.
*
* @since 1.0.0
* @return string
*/
public static function get_key_value( $key, $post_id = 0 ) {
$classes = self::get_classes();
foreach ( $classes as $class ) {
if ( $post_id ) {
if ( method_exists( $class, 'set_post' ) ) {
$class->set_post( $post_id );
}
}
if ( method_exists( $class, 'get_key_value' ) ) {
$meta = $class->get_key_value( $key );
}
if ( ! empty( $meta ) ) {
return Sanitize::text( $meta[ $key ]['value'] );
}
}
return '';
}
/**
* Get chunks
*
* @param string $string String to search for chunks.
*
* @since 1.0.0
* @return array<string, mixed>|array<int, array<string, mixed>>
*/
public static function get_chunks( $string ) {
$chunks = [];
$pattern = '/%([^%\s]+)%/u';
preg_match_all( $pattern, $string, $matches );
if ( ! empty( $matches[1] ) ) {
$chunks = $matches[1];
}
return $chunks;
}
/**
* Get available classes
*
* @since 1.0.0
* @return array<string,object>
*/
private static function get_classes() {
return [
'post' => Post::get_instance(),
'site' => Site::get_instance(),
'term' => Term::get_instance(),
];
}
}