Title: Methods | Page 24 of 49 | Developer.WordPress.org --- # Methods * method[Plugin_Upgrader::upgrade_strings()](https://developer.wordpress.org/reference/classes/plugin_upgrader/upgrade_strings/) * Initializes the upgrade strings. * Used by [2 functions](https://developer.wordpress.org/reference/classes/plugin_upgrader/upgrade_strings/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/plugin_upgrader/upgrade_strings/#uses) | Source: [wp-admin/includes/class-plugin-upgrader.php:56](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/class-plugin-upgrader.php#L56-L67) * method[Plugin_Upgrader_Skin::after()](https://developer.wordpress.org/reference/classes/plugin_upgrader_skin/after/) * Performs an action following a single plugin update. * Used by [0 functions](https://developer.wordpress.org/reference/classes/plugin_upgrader_skin/after/#used-by) | Uses [7 functions](https://developer.wordpress.org/reference/classes/plugin_upgrader_skin/after/#uses) | Source: [wp-admin/includes/class-plugin-upgrader-skin.php:79](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/class-plugin-upgrader-skin.php#L79-L122) * method[Plugin_Upgrader_Skin::__construct()](https://developer.wordpress.org/reference/classes/plugin_upgrader_skin/__construct/) * Constructor. * Used by [0 functions](https://developer.wordpress.org/reference/classes/plugin_upgrader_skin/__construct/#used-by) | Uses [5 functions](https://developer.wordpress.org/reference/classes/plugin_upgrader_skin/__construct/#uses) | Source: [wp-admin/includes/class-plugin-upgrader-skin.php:57](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/class-plugin-upgrader-skin.php#L57-L72) * method[Plural_Forms::execute()](https://developer.wordpress.org/reference/classes/plural_forms/execute/) * Execute the plural form function. * Used by [1 function](https://developer.wordpress.org/reference/classes/plural_forms/execute/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/plural_forms/execute/#uses) | Source: [wp-includes/pomo/plural-forms.php:261](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/plural-forms.php#L261-L349) * method[Plural_Forms::get()](https://developer.wordpress.org/reference/classes/plural_forms/get/) * Get the plural form for a number. * Used by [0 functions](https://developer.wordpress.org/reference/classes/plural_forms/get/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/plural_forms/get/#uses) | Source: [wp-includes/pomo/plural-forms.php:243](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/plural-forms.php#L243-L249) * method[Plural_Forms::parse()](https://developer.wordpress.org/reference/classes/plural_forms/parse/) * Parse a Plural-Forms string into tokens. * Used by [1 function](https://developer.wordpress.org/reference/classes/plural_forms/parse/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/plural_forms/parse/#uses) | Source: [wp-includes/pomo/plural-forms.php:99](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/plural-forms.php#L99-L231) * method[Plural_Forms::__construct()](https://developer.wordpress.org/reference/classes/plural_forms/__construct/) * Constructor. * Used by [2 functions](https://developer.wordpress.org/reference/classes/plural_forms/__construct/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/plural_forms/__construct/#uses) | Source: [wp-includes/pomo/plural-forms.php:83](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/plural-forms.php#L83-L85) * method[PO::add_comment_to_entry()](https://developer.wordpress.org/reference/classes/po/add_comment_to_entry/) * Used by [1 function](https://developer.wordpress.org/reference/classes/po/add_comment_to_entry/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/po/add_comment_to_entry/#uses) | Source: [wp-includes/pomo/po.php:502](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L502-L514) * method[PO::comment_block()](https://developer.wordpress.org/reference/classes/po/comment_block/) * Prepare a text as a comment — wraps the lines and prepends # and a special character to each line * Used by [1 function](https://developer.wordpress.org/reference/classes/po/comment_block/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/po/comment_block/#uses) | Source: [wp-includes/pomo/po.php:205](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L205-L208) * method[PO::export()](https://developer.wordpress.org/reference/classes/po/export/) * Exports the whole PO file as a string * Used by [1 function](https://developer.wordpress.org/reference/classes/po/export/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/classes/po/export/#uses) | Source: [wp-includes/pomo/po.php:59](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L59-L67) * method[PO::export_entries()](https://developer.wordpress.org/reference/classes/po/export_entries/) * Exports all entries to PO format * Used by [1 function](https://developer.wordpress.org/reference/classes/po/export_entries/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/po/export_entries/#uses) | Source: [wp-includes/pomo/po.php:48](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L48-L51) * method[PO::export_entry()](https://developer.wordpress.org/reference/classes/po/export_entry/) * Builds a string from the entry for inclusion in PO file * Used by [0 functions](https://developer.wordpress.org/reference/classes/po/export_entry/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/classes/po/export_entry/#uses) | Source: [wp-includes/pomo/po.php:217](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L217-L251) * method[PO::export_headers()](https://developer.wordpress.org/reference/classes/po/export_headers/) * Exports headers to a PO entry * Used by [1 function](https://developer.wordpress.org/reference/classes/po/export_headers/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/classes/po/export_headers/#uses) | Source: [wp-includes/pomo/po.php:29](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L29-L41) * method[PO::export_to_file()](https://developer.wordpress.org/reference/classes/po/export_to_file/) * Same as {@link export}, but writes the result to a file * Used by [0 functions](https://developer.wordpress.org/reference/classes/po/export_to_file/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/po/export_to_file/#uses) | Source: [wp-includes/pomo/po.php:76](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L76-L87) * method[PO::import_from_file()](https://developer.wordpress.org/reference/classes/po/import_from_file/) * Used by [0 functions](https://developer.wordpress.org/reference/classes/po/import_from_file/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/classes/po/import_from_file/#uses) | Source: [wp-includes/pomo/po.php:286](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L286-L311) * method[PO::is_final()](https://developer.wordpress.org/reference/classes/po/is_final/) * Helper function for read_entry * Used by [1 function](https://developer.wordpress.org/reference/classes/po/is_final/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/po/is_final/#uses) | Source: [wp-includes/pomo/po.php:319](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L319-L321) * method[PO::match_begin_and_end_newlines()](https://developer.wordpress.org/reference/classes/po/match_begin_and_end_newlines/) * Used by [1 function](https://developer.wordpress.org/reference/classes/po/match_begin_and_end_newlines/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/po/match_begin_and_end_newlines/#uses) | Source: [wp-includes/pomo/po.php:253](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L253-L280) * method[PO::poify()](https://developer.wordpress.org/reference/classes/po/poify/) * Formats a string in PO-style * Used by [2 functions](https://developer.wordpress.org/reference/classes/po/poify/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/po/poify/#uses) | Source: [wp-includes/pomo/po.php:106](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L106-L128) * method[PO::prepend_each_line()](https://developer.wordpress.org/reference/classes/po/prepend_each_line/) * Inserts $with in the beginning of every new line of $input_string and returns the modified string * Used by [2 functions](https://developer.wordpress.org/reference/classes/po/prepend_each_line/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/po/prepend_each_line/#uses) | Source: [wp-includes/pomo/po.php:177](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L177-L194) * method[PO::read_entry()](https://developer.wordpress.org/reference/classes/po/read_entry/) * Used by [1 function](https://developer.wordpress.org/reference/classes/po/read_entry/#used-by) | Uses [5 functions](https://developer.wordpress.org/reference/classes/po/read_entry/#uses) | Source: [wp-includes/pomo/po.php:328](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L328-L450) * method[PO::read_line()](https://developer.wordpress.org/reference/classes/po/read_line/) * Used by [2 functions](https://developer.wordpress.org/reference/classes/po/read_line/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/po/read_line/#uses) | Source: [wp-includes/pomo/po.php:457](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L457-L496) * method[PO::set_comment_before_headers()](https://developer.wordpress.org/reference/classes/po/set_comment_before_headers/) * Text to include as a comment before the start of the PO contents * Used by [0 functions](https://developer.wordpress.org/reference/classes/po/set_comment_before_headers/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/po/set_comment_before_headers/#uses) | Source: [wp-includes/pomo/po.php:96](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L96-L98) * method[PO::trim_quotes()](https://developer.wordpress.org/reference/classes/po/trim_quotes/) * Used by [0 functions](https://developer.wordpress.org/reference/classes/po/trim_quotes/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/po/trim_quotes/#uses) | Source: [wp-includes/pomo/po.php:520](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L520-L528) * method[PO::unpoify()](https://developer.wordpress.org/reference/classes/po/unpoify/) * Gives back the original string from a PO-formatted string * Used by [1 function](https://developer.wordpress.org/reference/classes/po/unpoify/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/po/unpoify/#uses) | Source: [wp-includes/pomo/po.php:136](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/po.php#L136-L168) * method[POMO_CachedFileReader::POMO_CachedFileReader()](https://developer.wordpress.org/reference/classes/pomo_cachedfilereader/pomo_cachedfilereader/) * PHP4 constructor. * Used by [0 functions](https://developer.wordpress.org/reference/classes/pomo_cachedfilereader/pomo_cachedfilereader/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/classes/pomo_cachedfilereader/pomo_cachedfilereader/#uses) | Source: [wp-includes/pomo/streams.php:329](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/streams.php#L329-L332) * method[POMO_CachedFileReader::__construct()](https://developer.wordpress.org/reference/classes/pomo_cachedfilereader/__construct/) * PHP5 constructor. * Used by [2 functions](https://developer.wordpress.org/reference/classes/pomo_cachedfilereader/__construct/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/pomo_cachedfilereader/__construct/#uses) | Source: [wp-includes/pomo/streams.php:313](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/streams.php#L313-L320) * method[POMO_CachedIntFileReader::POMO_CachedIntFileReader()](https://developer.wordpress.org/reference/classes/pomo_cachedintfilereader/pomo_cachedintfilereader/) * PHP4 constructor. * Used by [0 functions](https://developer.wordpress.org/reference/classes/pomo_cachedintfilereader/pomo_cachedintfilereader/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/classes/pomo_cachedintfilereader/pomo_cachedintfilereader/#uses) | Source: [wp-includes/pomo/streams.php:355](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/streams.php#L355-L358) * method[POMO_CachedIntFileReader::__construct()](https://developer.wordpress.org/reference/classes/pomo_cachedintfilereader/__construct/) * PHP5 constructor. * Used by [1 function](https://developer.wordpress.org/reference/classes/pomo_cachedintfilereader/__construct/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/classes/pomo_cachedintfilereader/__construct/#uses) | Source: [wp-includes/pomo/streams.php:344](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/streams.php#L344-L346) * method[POMO_FileReader::close()](https://developer.wordpress.org/reference/classes/pomo_filereader/close/) * Used by [0 functions](https://developer.wordpress.org/reference/classes/pomo_filereader/close/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/pomo_filereader/close/#uses) | Source: [wp-includes/pomo/streams.php:221](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/streams.php#L221-L223) * method[POMO_FileReader::feof()](https://developer.wordpress.org/reference/classes/pomo_filereader/feof/) * Used by [0 functions](https://developer.wordpress.org/reference/classes/pomo_filereader/feof/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/classes/pomo_filereader/feof/#uses) | Source: [wp-includes/pomo/streams.php:214](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/streams.php#L214-L216) [Previous Page](https://developer.wordpress.org/reference/methods/page/23/?output_format=md) [1](https://developer.wordpress.org/reference/methods/?output_format=md) … [22](https://developer.wordpress.org/reference/methods/page/22/?output_format=md) [23](https://developer.wordpress.org/reference/methods/page/23/?output_format=md) 24 [25](https://developer.wordpress.org/reference/methods/page/25/?output_format=md) [26](https://developer.wordpress.org/reference/methods/page/26/?output_format=md)… [49](https://developer.wordpress.org/reference/methods/page/49/?output_format=md) [Next 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