如何使用单一的php函数以独特的格式更改日期格式？

问题描述

我想了解如何使用php函数将不同的日期格式更改为单一格式。以各种方式尝试后，我无法解决这个难题。顺利地在我的自定义函数.php中使用了下面的代码：

  
  DateTime 格式不包含 createFromFormat（）。如果您支持的格式（那么 DateTime 类可以处理这个问题： 
 
 
 $ date = new DateTime（$ x）; 
 return $ date-> format（'Ym-d'）; 
} 
  
 
I would like to understand how to change different date formats into a single format using a php function. After trying in every way, i wasn't able to solve this puzzle. I always just used the following code in my custom function.php smoothly:
/* Change date format for coupon */
function change_date_format($x) {
    $date = DateTime::createFromFormat('j-M-Y', $x);
    $x = $date->format('Y-m-d');
    return $x;
}
In this way i can convert the format 'j-M-Y' in the format 'Y-m-d'. The problem is that now i need to convert not only the date format 'j-M-Y', but also other formats (for example, i've to convert date format 'j-M-Y' and date format 'Y-m-d\TH:i:sP' in date format 'Y-m-d'. I tried to combine different logic functions but system gives me error.
Thanks to all of you who try to help me...
 解决方案 
The DateTime class is pretty good at parsing different formats without createFromFormat().  If the formats you have are supported (Supported Date and Time Formats) then just let it create based on the in-built logic.  If $x = '2016-06-30T23:59:59+02:00' then the DateTime class handles this just fine:
function change_date_format($x) {
    $date = new DateTime($x);
    return $date->format('Y-m-d');
}
                        
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