验证php中的日期格式 [英] Validate date format in php
问题描述
我想使用PHP验证日期。
I'm trying to validate date using PHP.
我希望以下格式有效:
d/m/yy
d/m/yyyy
dd/m/yy
dd/m/yyyy
d/mm/yy
d/mm/yyyy
dd/mm/yy
dd/mm/yyyy
我尝试过许多正则表达式和不同的checkdate()函数。目前我有这样的东西:
I've tried many regular expressions and different variations of checkdate() function. Currently I have something like this:
function _date_is_valid($str)
{
if(strlen($str) == 0)
return TRUE;
if(substr_count($str,'/') == 2)
{
if (preg_match("/^((((31\/(0?[13578]|1[02]))|((29|30)\/(0?[1,3-9]|1[0-2])))\/(1[6-9]|[2-9]\d)?\d{2})|(29\/0?2\/(((1[6-9]|[2-9]\d)?(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))))|(0?[1-9]|1\d|2[0-8])\/((0?[1-9])|(1[0-2]))\/((1[6-9]|[2-9]\d)?\d{2}))/", $str))
{
$datearray = explode('/',$str);
if($datearray[2] > 2030)
return FALSE;
return checkdate($datearray[1], $datearray[0], $datearray[2]);
}
else
{
return FALSE;
}
}
return FALSE;
}
然而,验证日期如11/11/200和11/11 / 200#
This however, validates dates like 11/11/200 and 11/11/200#
如何验证日期以匹配所需格式?
How can I validate date to match required format?
编辑:我可以检查datearray [2 ]是在10到30和2010和2030之间。但是有没有办法使用正则表达式检查?
I could check datearray[2] to be between 10 and 30 and 2010 and 2030. But is there a way to check it using regex?
Edit1:在strlen上返回TRUE($ str)== 0是因为我希望用户能够添加事件,而不知道事件何时发生,所以其他人可以限定日程安排并将事件分配到特定日期。
return TRUE on strlen($str) == 0 is because I want users to be able to add events without knowing when will the event occur so someone else can qualify the schedule and assign event to certain date later
只是为了记录。我最终做了:
Just for the record. I ended up doing:
function _date_is_valid($str)
{
if(strlen($str) == 0) //To accept entries without a date
return TRUE;
if(substr_count($str,'/') == 2)
{
list($d,$m,$y) = explode('/',$str);
if(($y >= 10 && $y <= 30) || ($y >= 2010 && $y <= 2030))
{
return checkdate($m,$d,$y);
}
}
return FALSE;
}
感谢您的所有答案
推荐答案
function _date_is_valid($str) {
if (substr_count($str, '/') == 2) {
list($d, $m, $y) = explode('/', $str);
return checkdate($m, $d, sprintf('%04u', $y));
}
return false;
}
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