how to convert month name to number in php code example

Example 1: php convert number to month

$monthNum  = 3;
$monthName = date('F', mktime(0, 0, 0, $monthNum, 10)); // March

Example 2: php convert month number to name

$monthNum  = 3;
$dateObj   = DateTime::createFromFormat('!m', $monthNum);
$monthName = $dateObj->format('F'); // March