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php验证时间的有效性

Jun 13, 2016 am 09:34 AM
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php验证日期的有效性有内置函数,即checkdate函数,下面分享一下checkdate函数的定义和用法。

checkdate 定义和用法

checkdate() 函数验证一个格里高里日期。如果指定的值合法,则该函数返回 true,否则返回 false。

日期在下列情况下为合法:

month 介于且包括 1 - 12

Day 的值在给定的 month 所应该具有的天数范围之内,闰年已经考虑进去了。
 
year 介于且包括 1 到 32767

checkdate 语法

checkdate(month,day,year)

month 必需。规定月。

day 必需。规定日。

year 必需。规定年。

使用例子如下:

<?php
var_dump(checkdate(12,31,2000));
var_dump(checkdate(2,29,2003));
var_dump(checkdate(2,29,2004));
Copy after login

结果将输出:

bool(true)
bool(false)
bool(true)

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