例子18-5. 将日期元素转换为时间戳
<?php
// this assumes your form elements are named
// startDate_Day, startDate_Month, startDate_Year
$startDate = makeTimeStamp($startDate_Year, $startDate_Month, $startDate_Day);
function makeTimeStamp($year='', $month='', $day='')
{
if(empty($year)) {
$year = strftime('%Y');
}
if(empty($month)) {
$month = strftime('%m');
}
if(empty($day)) {
$day = strftime('%d');
}
return mktime(0, 0, 0, $month, $day, $year);
}
?>
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