PHP-从当月获取前一个月的名称

Question

$_POST['month_year'] = APR-2015

$mth = "April";
$pre_mth = Date("F", strtotime($mth . " last month")); 

$pre_mth gives me only month name which is 'March'.

How can I fetch previous month-year in the format MAR-2015 ?

Answer 1

See the date function options:

$pre_mth = strtoupper(date("M-Y", strtotime($mth . " last month")));
// strtoupper just to uppercase 'Mar' to 'MAR'

Answer 2

You were missing 'Y' within your date function

$mth="April";
$pre_mth = strtoupper(Date("M-Y", strtotime($mth . " last month")));
echo $pre_mth;// MAR-2015

Answer 3

$input = 'APR-2015';

$dt = new DateTime($input);
$dt->modify('last month');

$output = $dt->format('M-Y');

echo strtoupper($output);

// Output:
// MAR-2015

Answer 4

You can use the php function strtotime() , ie:

$post = "APR-2015";
echo strtoupper(date('M-Y', strtotime($post. "-1 Month")));

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Output:

MAR-2015

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DEMO