如何获取由Carbon :: parse（）解析日期时间字符串的格式说明符

In Carbon PHP we have a method to parse string to date. if the string is a valid date string then i'd be parsed to a valid Carbon object. I'm curious to know if is there any way we could get the possible format string in which php determines the date would be. for example:

Carbon::parse("01 January, 2018");

then we'll get a valid carbon object. My question is, can we anyway get "d F, Y" which is the actual format specifier php guessed automatically.

Method parse always return an instance of Carbon\Carbon. So you should either validate your string before:

Validator::make(
    ['date_value' => $date],
    ['date_value' => 'date']
)->validate();
Carbon::parse($date);

or use createFromFormat method instead:

if (Carbon::createFromFormat('d F, Y', $stringVariable) !== false) {
    // valid date
}

Carbon extends the PHP DateTime class. The Carbon::parse method eventually passes the input down to DateTime::__construct which parses it as described in the PHP Manual Supported Date and Time Formats.