PO::export_entries()
Exports all entries to PO format
Return
(string) sequence of mgsgid/msgstr PO strings, doesn't containt newline at the end
Source
File: wp-includes/pomo/po.php
function export_entries() {
//TODO sorting
return implode("\n\n", array_map(array('PO', 'export_entry'), $this->entries));
}