php验证时间的有效性
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));
结果将输出:
bool(true)
bool(false)
bool(true)
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