Home Backend Development PHP Tutorial 时间的判断有关问题

时间的判断有关问题

Jun 13, 2016 pm 12:09 PM
gt nbsp

时间的判断问题
A1  2014-10-1   10:00:00
A2  2014-10-2   14:00:00
B1  2014-10-4   13:00:00
B2  2014-10-5   15:00:00

A1为开始时间,A2为结束时间,B1为开始时间,B2为结束时间
现在有时间 C1-C2

如何判断C1-C2,如果在A1-A2或者B1-B2里面或者有交叉,出现弹框提示。

------解决思路----------------------
转换成时间戳 然后比较大小
------解决思路----------------------
观察一个事实

$ar = array(<br />  'A1' => '2014-10-1 10:00:00',<br />  'A2' => '2014-10-2 14:00:00',<br />  'B1' => '2014-10-4 13:00:00',<br />  'B2' => '2014-10-5 15:00:00',<br />);<br /><br />$ar['C1'] = '2014-10-3 13:00:00';<br />$ar['C2'] = '2014-10-5 13:00:00';<br /><br />asort($ar);<br />print_r($ar);
Copy after login
Array<br />(<br />    [A1] => 2014-10-1 10:00:00<br />    [A2] => 2014-10-2 14:00:00<br />    [C1] => 2014-10-3 13:00:00<br />    [B1] => 2014-10-4 13:00:00<br />    [C2] => 2014-10-5 13:00:00<br />    [B2] => 2014-10-5 15:00:00<br />)<br /><br />
Copy after login
根据键名就可准确的判断出来了吧?
------解决思路----------------------
无论有多少数据,算法都是不变的
只要依次检查键名,同组的“开始”和“结束”不相邻就是有交叉或嵌套

不写具体代码的原因是:你的情况远比示例复杂,写了你也套不上去。关键在于理解

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