我希望能够格式化（多语言）句子，如：
I have 12,345 widgets.
在我的.po中，我有
msgid "I only have %d widget."
msgid_plural "I have %d widgets."
msgstr[0] "I don't have any widgets."
msgstr[1] "I only have %d widget."
msgstr[2] "I have %d widgets."
ngettext("I only have %d widget.", "I have %d widgets.", 12345);
如果我使用number_format(12345)，我会返回一个"12,345"字符串，它不能用于检测复数（文档说它必须是int）。
有没有办法让gettext提供一个格式化的号码？
您可以将sprintf与number_format结合使用，如：
sprintf(ngettext("I only have %s widget.", "I have %s widgets.", 1), number_format(1, 0, '.', ','));
sprintf(ngettext("I only have %s widget.", "I have %s widgets.", 999), number_format(999, 0, '.', ','));
sprintf(ngettext("I only have %s widget.", "I have %s widgets.", 1000), number_format(1000, 0, '.', ','));
这将返回：
I only have 1 widget.
I have 999 widgets.
I have 1,000 widgets.