在PHP中将日期转换为M-d-y格式

Question

如何使用PHP更改日期格式？我使用了以下代码，但它将日期输入字段值显示为m-d-Y。为什么要改变格式？

  $effectivedate = date('M-d-Y', strtotime($empCompensationdata-effective_date));
 $effective_date = date('Y-m-d', strtotime($empCompensationdata-effective_date));
 $("#effective_date").val($effectivedate);
 $('#effective_date').attr('data-value', $effective_date);

Answer 1

The reason the value is displayed as M-d-Y is because that's what you're assigning to it with the val() method:

$effectivedate = date('M-d-Y', strtotime($empCompensationdata->effective_date));
 $effective_date = date('Y-m-d', strtotime($empCompensationdata->effective_date));
 $("#effective_date").val($effectivedate); //This variable contains "M-d-Y"
 $('#effective_date').attr('data-value', $effective_date);

So if you want to have Y-m-d, just change the assigning variable:

$("#effective_date").val($effective_date); //This variable contains "Y-m-d"