wikimedia/mediawiki-extensions-Translate

<?php
declare( strict_types = 1 );

namespace MediaWiki\Extension\Translate\TranslatorInterface\Insertable;

/**
 * Insertables suggester for numerical parameters such as $1, $2, $3
 * @author Geoffrey Mon
 * @license GPL-2.0-or-later
 * @since 2020.12
 */
class NumericalParameterInsertablesSuggester implements InsertablesSuggester {
    public function getInsertables( string $text ): array {
        $insertables = [];

        // $1, $2, $3 etc.
        $matches = [];
        preg_match_all(
            '/\$\d+/',
            $text,
            $matches,
            PREG_SET_ORDER
        );
        $new = array_map( static function ( $match ) {
            return new Insertable( $match[0], $match[0] );
        }, $matches );
        $insertables = array_merge( $insertables, $new );

        return $insertables;
    }
}