How to get the first and last day of a month in php?

php Get the first and last day of a month and directly enter the code. It is actually a very simple thing.

The code is as follows:

function getthemonth($date) 
{ 
$firstday = date('Y-m-01', strtotime($date)); 
$lastday = date('Y-m-d', strtotime("$firstday +1 month -1 day")); 
return array($firstday, $lastday); 
}

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