How can a PHP user concatenate date elements like week and year in a single output variable?

To concatenate date elements like week and year in PHP, you can use the date() function with the 'W' format specifier for the week number and 'Y' for the year. You can then concatenate these values into a single output variable using the concatenation operator '.'.

// Get the current week number and year
$week = date('W');
$year = date('Y');

// Concatenate week and year into a single output variable
$output = "Week " . $week . " of " . $year;

echo $output;