PHP DateTime :: createFromFormat不起作用 [英] PHP DateTime::createFromFormat not working

问题描述

DateTime :: createFromFormat 似乎无法正常工作，有人知道原因和/或解决方法吗?

DateTime::createFromFormat doesn't appear to be working correctly, does anyone know a reason and/or how to fix it?

给出以下代码:

var_dump(DateTime::createFromFormat('m', '02')->format('m'));
var_dump(DateTime::createFromFormat('n', '2')->format('n'));

我的预期输出将是

02
2

但是我实际上得到了:

03
3

示例: http://codepad.viper-7.com/e4hns6

我已经在许多服务器上对此进行了测试，包括:

I've tested this on a multitude of servers including:

• Win PHP 5.4
• Linux PHP 5.3
• 毒蛇键盘

推荐答案

来自手册:

"如果格式不包含字符！，则部分未指定格式的生成时间将设置为当前系统时间."

"If format does not contain the character ! then portions of the generated time which are not specified in format will be set to the current system time."

以下应能按预期工作:

var_dump(DateTime::createFromFormat('!m', '02')->format('m'));
var_dump(DateTime::createFromFormat('!n', '2')->format('n'));

# result:
string(2) "02"
string(1) "2"

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