What are the potential pitfalls of using lowercase vs. uppercase format characters in the date function in PHP?

Using lowercase vs. uppercase format characters in the date function in PHP can lead to incorrect or unexpected results in the date output. It is important to use the correct format characters to ensure the desired date format is achieved. To avoid this issue, always refer to the PHP documentation for the correct format characters to use. 

// Incorrect usage of lowercase format characters
$date = date('d-m-y'); // Output: 15-07-21 (day-month-year)

// Correct usage of uppercase format characters
$date = date('d-m-Y'); // Output: 15-07-2021 (day-month-year)

Keywords

date function PHP lowercase uppercase format characters

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