What are common pitfalls when trying to display all days of a month in PHP?

One common pitfall when trying to display all days of a month in PHP is not taking into account the varying number of days in each month. To solve this, you can use the `cal_days_in_month()` function to get the total number of days in a month. 

$month = 5; // May
$year = 2022;

$total_days = cal_days_in_month(CAL_GREGORIAN, $month, $year);

for ($day = 1; $day <= $total_days; $day++) {
    echo "{$year}-{$month}-{$day}\n";
}

Keywords

date calendar loop array formatting

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