how to change date format on this html user form

问题

I have the html form which enter data into mysql DB, but in input field of date it has this format,

(mm/dd/yyyy)

BUT I prefer to use this format on entering date

(dd/mm/yyyy)

Can any body help to change the format.

Here the HTML form

<html>
 <head>

  <body><p>Admition number:<br>
   <input type="text" class="idNum" id="idnumber"    
   onkeyup="javascript:capitalize(this.id,   
   this.value);" name="idnumber" size="20">
   <br />
   Former school:<br>
   <input type="text" id="former_school" onkeyup="javascript:capitalize(this.id,     
   this.value);"         
   name="former_school" size="20">
  <br>
   Name of Child:<br>
   <input class="fname" type="text" id="fname" onkeyup="javascript:capitalize(this.id,   
   this.value);" name="fname" size="20">
   <br />
   Admission date:<br>                                        
   <input type="date" id="add_date" placeholder="date-month-year" name="add_date"    
   size="20">
   <br />
   Nationality:<br>
   <input type="text" id="country" onkeyup="javascript:capitalize(this.id,   
   this.value);"           
   name="country" size="20">
  <br />
  Date of Birth:<br>                
  <input type="date" id="date"  placeholder="date-month-year" name="date" size="20">
  <br />
  Tribe:<br>
  <input type="text" id="tribe" onkeyup="javascript:capitalize(this.id, this.value);"      
   name="tribe" size="20">
   </body>
  </html>

This is php code for inserting data, NOTE: not the same with field above(html) becose i just mention few fields from html page.

 <?php 
  include("Connections/conn.php")?>

  <?php
  $idnumber=mysql_real_escape_string($_POST['idnumber']);
  $insert="INSERT INTO     
  student(idnumber,former_school,fname,add_date,country,date,tribe)   
  VALUES('".$_POST["idnumber"]."','".$_POST["former_school"]."',
  '".$_POST["fname"]."','".$_POST["add_date"]."','".$_POST["country"]."',
   '".$_POST["date"]."','".$_POST["tribe"]."')";

 ?>

回答1:

use this code

$originalDate = "2010-03-21";
$newDate = date("d-m-Y", strtotime($originalDate));

回答2:

You should be storing your dates as actual dates and not strings. You're only making your life more difficult by storing them in a non-standard format.

But if you insist on using this format, this code will work for you:

$original = DateTime::createFromFormat('m/d/Y', '04/18/1973');
$date     = $original->format('d/m/Y');

回答3:

<script id="template" type="text/x-handlebars-template"> <table> <tr> <th>Posted on: </th> <td> <?php $date = '{{posted}}';</td> </tr> </table> </script> echo date('d M Y',strtotime($date));?>

来源：https://stackoverflow.com/questions/20986251/how-to-change-date-format-on-this-html-user-form

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php

html

mysql

date

date-formatting