将军队时间转换为常规时间(上午/下午)在PHP - Convert army time to regular time (AM/PM) in PHP

Convert army time to regular time (AM/PM) in PHP

是否有方法将军队时间(如23:00)转换为AM/PM表达式的常规时间?

就像这样把时间传递给strtotime函数:

$time_in_12_hour_format = date("g:i a", strtotime("23:00"));
echo $time_in_12_hour_format;

使用日期:

$army_time_str = "23:00";
$regular_time_str = date( 'g:i A', strtotime( $army_time_str ) );
echo $regular_time_str;

输入$time的形式为'XXXX'(例如:' 0000 ', ' 0001 ',…,"2300")。我找不到这样的函数，所以我写了下面的代码:

function convert_army_to_regular($time) {
    $hours = substr($time, 0, 2);
    $minutes = substr($time, 2, 2);
    if ($hours > 12) {
        $hours = $hours - 12;
        $ampm = 'PM';
    } else {
        if ($hours != 11) {
            $hours = substr($hours, 1, 1);
        }
        $ampm = 'AM';
    }
    return $hours . ':' . $minutes . $ampm;
}