PHP日期转换为不正确的格式[重复]

Question

This question already has an answer here:

• Strtotime() doesn't work with dd/mm/YYYY format 14 answers

I am posting data with dates in this format:

06/11/2015

i then use the below function to change the date format to insert into a database:

ChangeDateFormat('06/11/2015', 'Y-m-d');

date_default_timezone_set('Europe/London');
if(!function_exists("ChangeDateFormat")) {
    function ChangeDateFormat($date = '', $format = '') {
        if($date == '' or $date == '0000-00-00' or $date == '0000-00-00 00:00:00') {
            return '-';
        } else {
            return date($format, strtotime($date));
        }
    }
}

but its inserting into the following format:

2015-06-11 whereas it should be 2015-11-06

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Answer 1

Dates in the m/d/y or d-m-y formats are disambiguated by looking at the separator between the various components: if the separator is a slash (/), then the American m/d/y is assumed; whereas if the separator is a dash (-) or a dot (.), then the European d-m-y format is assumed. If, however, the year is given in a two digit format and the separator is a dash (-, the date string is parsed as y-m-d. To avoid potential ambiguity, it's best to use ISO 8601 (YYYY-MM-DD) dates or DateTime::createFromFormat() when possible. link