我開始學習PHP OOP，並且我有這個練習來創建一個顯示日期的函數。 我想拿出這個結果： $ date = new（「14-01-2014」）; //例如，這個用戶的日期以php，OOP方式創建顯示日期函數
echo $date -> displaDate ('YYYY-MM-JJ'); // Would result to 2014-01-14
echo $date -> day; //Would result to 14
echo $date -> dayOfWeek; //Would result to Thursday
有人請向我解釋如何開始爲此做一個函數？我明白函數有變量和方法。
如果你到你自己實現它，你可以通過做這種方式去：
class Date
{
private $KeysArray;
// Members
public $day;
public $dayOfWeek;
public function __constructor()
{
// 1) This should get the current date and save it in the "keys array":
// the constants should of course be replaced with the method you're using to get
// the year, month or whatever.
$this->KeysArray = array("YYYY" => YEAR_VALUE, "MM" = MONTH_VALUE...)
// 2) Set all of the properties (data members):
$this->day = DAY_VALUE
$this->dayOfWeek = DAY_OF_WEEK_VALUE
}
public function DisplayDate($DateFormatString)
{
// 1) Parse the $DateFormatString. Turn it into an array of the terms. If it's
// always going to be split with "-", then you could use the function
// "explode()".
// 2) Go over that array and try calling each item with the $this->KeysArray.
}
}
爲什麼不簡單地在DateTime中編寫一個包裝呢？ –
該課程旨在包裝PHP的日期，時間或DateTime功能之一。我認爲他的意思是他需要把自己作爲家庭作業來實現。 –
你說得對，丹尼爾。謝謝！ – swissed
<?php
$dt = new DateTime();
echo $dt->format('j-n-Y');
?>
請檢查此類型。 –
從版本5.2開始，PHP有DateTime類用於表示日期和時間。
例如，
$dateTime=new DateTime('NOW');
echo "<pre>";
print_r($dateTime);
echo "</pre>";
很簡單....
<!DOCTYPE html>
<html>
<body>
<?php
$t=time();
echo($t . "<br>");
echo(date('Y-m-d',$t));
?>
</body>
</html>
使用下面的代碼
<?php
class our_date
{
private $shortDateFormat = "F j, Y";
private $longDateFormat = "F j, Y, g:i a"; //just mention you format here
private $dayofweek = "D"; //for example get the day of week
private $timestamp = 0;
function __construct($timestamp = 0)
{
$this->timestamp = $timestamp;
}
public function getTime()
{
return (int) $this->timestamp;
}
public function get_day_of_week()
{
return date($this->dayofweek,$this->timestamp);
}
public function long()
{
if ($this->timestamp > 0)
{
return date ($this->longDateFormat , $this->timestamp);
}
else
{
return "";
}
}
public function short()
{
if ($this->timestamp > 0)
{
return date ($this->shortDateFormat , $this->timestamp);
}
else
{
return "";
}
}
public function __toString()
{
return $this->timestamp;
}
}
/* Creating Date object*/
$new_date_format = new our_date(time());
/* echo current day of week */
echo $new_date_format->get_day_of_week();
echo '<br>';
/* echo current date in short format */
echo $new_date_format->short();
echo '<br>';
/* echo current date in long format */
echo $new_date_format->long();
echo '<br>';
?>
努力去學習它，我已經實現了它對於本週日& 2個例子
從例子中學習並嘗試實施爲您的要求，其餘
無法實現做求人
@Daniel Saad，謝謝你幫助我理解。這是解決我的問題：
class Date{
private $dateString;
function __construct($dateString)
{
$this->dateString = $dateString;
}
// Method to display date in different formats.
public function displayDate($dateFormat)
{
list($day, $month, $year) = explode('-', $this->dateString);
switch($dateFormat)
{
case "YYYY-mm-dd" : $format = $year.'-'.$month.'-'.$day; break;
case "mm-dd-YYYY" : $format = $month.'-'.$day.'-'.$year; break;
default : $format = $year.'-'.$month.'-'.$day;
}
return $format;
}
//Method to get day
public function day()
{
$day = date('d', strtotime($this->dateString));
return $day;
}
//Method to get the day of the week.
public function dayofweek()
{
$weekday = date('l', strtotime($this->dateString));
return $weekday;
}
//Method to get month in text.
public function getmonth()
{
$month = date('F', strtotime($this->dateString));
return $month;
}
}
?>
的index.php
<?php
//Initialisation
$date = new Date('14-01-2014');
$anotherdate = new Date('13-07-1979')
?>
<h3>Instance 1</h3>
<p>Date: <?php echo $date->displayDate('YYYY-mm-dd'); ?></p>
<p>Day: <?php echo $date->day(); ?></p>
<p>Day of week: <?php echo $date->dayofweek(); ?></p>
<p>Month: <?php echo $date->getmonth(); ?></p> <br />
結果： 實例1 日期：2014年1月14日 日：本週14 日：星期二 月份：1月
我希望這也可以幫助那些誰是剛開始瞭解OOP。
爲什麼不看看[DateTime對象]（http://www.php.net/manual/en/class.datetime.php）和[格式]（http://www.php.net/ manual/en/datetime.format.php）方法 –
看來你並不清楚函數，類，對象和方法之間有什麼區別。我建議你先學習一些理論。查找一些基本的OOP教程。 – s3v3n
@ s3v3n我問這個問題是因爲我想學習理論，我也檢查了一些教程。 – swissed