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我有一堂课。基本上构造和setter函数是相同的。一切都以这种方式工作得很好。但是当我尝试从构造函数中删除相同的代码，而只是调用 setter 函数时，我收到了一个致命错误：“致命错误：当不在对象上下文中时使用 $this...”这是之前的代码更改（这工作正常，没有错误）

Class Zmanim extends ZmanimCalculation  {
//this class contains all the stuff needed in order to make the zmanim page work

private  $day_const,$month_const,$year_const,$latitude_const,$longitude_const,$tz_const,$date_convertor_const,$zmanim_array_const;



function __construct($set_day,$set_month,$set_year,$set_latitude,$set_longitude,$set_tz,$set_date_convertor=true) {

    $this->day_const=$set_day;
    $this->month_const=$set_month;
    $this->year_const=$set_year;
    $this->latitude_const=$set_latitude;
    $this->longitude_const=$set_longitude;
    $this->tz_const=$set_tz;
    $this->date_convertor_const=$set_date_convertor;

    $this->zmanim_array_const=ZmanimCalculation::Full_Zmanim_calculation ($this->day_const,$this->month_const,$this->year_const,$this->latitude_const,$this->longitude_const,$this->tz_const,$this->date_convertor_const);


}

static function setZmanim ($set_day,$set_month,$set_year,$set_latitude,$set_longitude,$set_tz,$set_date_convertor=true) {

    $this->day_const=$set_day;
    $this->month_const=$set_month;
    $this->year_const=$set_year;
    $this->latitude_const=$set_latitude;
    $this->longitude_const=$set_longitude;
    $this->tz_const=$set_tz;
    $this->date_convertor_const=$set_date_convertor;

    $this->zmanim_array_const=ZmanimCalculation::Full_Zmanim_calculation ($this->day_const,$this->month_const,$this->year_const,$this->latitude_const,$this->longitude_const,$this->tz_const,$this->date_convertor_const);
}

这就是我调用构造的方式（仍然可以正常工作而没有错误：

$fullzmanim=new Zmanim ($_POST['zmanim_gregorian_day'],  
                        $_POST['zmanim_gregorian_month'], 
                        $_POST['zmanim_gregorian_year'], 
                        $latitude, 
                        $longitude, 
                        $tz);

但是当我只是在构造函数中调用 setter 静态函数时，我得到了一个错误。这是错误的代码：

Class Zmanim extends ZmanimCalculation  {
//this class contains all the stuff needed in order to make the zmanim page work

private  $day_const,$month_const,$year_const,$latitude_const,$longitude_const,$tz_const,$date_convertor_const,$zmanim_array_const;



function __construct($set_day,$set_month,$set_year,$set_latitude,$set_longitude,$set_tz,$set_date_convertor=true) {
    self::setZmanim($set_day,$set_month,$set_year,$set_latitude,$set_longitude,$set_tz,$set_date_convertor);


}

static function setZmanim ($set_day,$set_month,$set_year,$set_latitude,$set_longitude,$set_tz,$set_date_convertor=true) {

    $this->day_const=$set_day;
    $this->month_const=$set_month;
    $this->year_const=$set_year;
    $this->latitude_const=$set_latitude;
    $this->longitude_const=$set_longitude;
    $this->tz_const=$set_tz;
    $this->date_convertor_const=$set_date_convertor;

    $this->zmanim_array_const=ZmanimCalculation::Full_Zmanim_calculation ($this->day_const,$this->month_const,$this->year_const,$this->latitude_const,$this->longitude_const,$this->tz_const,$this->date_convertor_const);
}

有人知道出了什么问题吗？谢谢！

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