public function checkDay(){
        echo gettype($this->day); // string
        }
    
public function checkMonth() {          
        echo gettype($this->day); // objet
}

J'ai 2 fonctions checkDay() et checkMonth(), je devais recuperer une variable de checkDay et l'implementer a checkMonth, mais cette variable devenait un objet, comment la convertir en string?

        // check month
    public function checkMonth() {

    if(!empty($this->day)){
        echo $this->day; // devient un objet et non une string
      }

    if(($this->day > 30) && (!in_array($this->month, $this->mw31d)))
        {
            $month_check = 'Monthbad31';
        }
        else
        {
            $month_check = 'MonthValid';
        }
           
        $this->month_check = $month_check;
       
        return $this->month_check;
    } // 

C'est la class Day qui nous intéresse, pas celle là.

<?php

class DOBD {

    // params
    private $errors = array(), $day, $month, $year;

    // get user group, level and id
    public function __construct($day, $month, $year) {
        
        // set months with 31 days
        $mw31d = array(1, 3, 5, 7, 8, 10, 12);
        
        $this->day      = $day;
        $this->month    = $month;
        $this->year     = $year;
        $this->mw31d    = $mw31d;
    } // end function __construct
    
    
    // check the day    
    public function checkDay() {
        // check if Feb contains more than 29 days
        if(empty($this->day) OR ($this->day > 31))
        {
            $day_check = 'DayNotValid';
        }
        elseif(($this->day > 29) && ($this->month == 02))
        {
            $day_check = 'Daybad29';
        }
        else
        {
            $day_check = 'DayValid';
        }
        
        $this->day_check = $day_check;
        //echo 'check day '.$this->day_check.'<br />';
        
        return $this->day_check;
    } // end function checkDay($this->day)
    

    public function __toString()
    {
        return $this->day;
    }

    
    // check the month
    public function checkMonth() {
        
        var_dump($this->day);
        
        if(empty($this->month) OR ($this->month > 12))
        {
            $month_check = 'MonthNotValid';
        }
        // check if the selected month has 31 days
        elseif(($this->day > 30) && (!in_array($this->month, $this->mw31d)))
        {
            $month_check = 'Monthbad31';
        }
        else
        {
            $month_check = 'MonthValid';
        }
            
        $this->month_check = $month_check;
        
        return $this->month_check;
        //echo 'check month '.$this->month_check.'<br />';
    } // end function checkMonth($this->month)
    
    
    // check Leap year
    public function isLeap()
    {
        if(((($this->year % 4) == 0) AND ($this->year % 100 != 0)) OR ($this->year % 400 == 0))
        {
            return TRUE;
        }
            return FALSE;        
    }
    
    // check the year
    public function checkYear() {
    if(empty($this->year))
    {
        $year_check = 'YearNotValid';
    }
    // check if the year is leap
    elseif((!$this->isLeap($this->year) && ($this->day >= 29) && ($this->month == 2)))
    {
        $year_check = 'yearLeap';
    }
    else
    {
    	$year_check = 'YearValid';
    }
        
        $this->year_check = $year_check;
        return $this->year_check;
        //echo 'check year '.$this->year_check.'<br />';
    
    } // end function checkYear($this->year) {
    
    
    // check if the DOB is greater than today date (NOT YET BORNED)
    public function checkDOBD()
    {
        $today = date('d-m-Y');
        $todayTimeStamp = strtotime($today);
        //echo $todayTimeStamp.'<br >';
        
        $dob = $this->day.'-'.$this->month.'-'.$this->year;
        $dobTimeStamp = strtotime($dob).'<br />';
        //echo $dobTimeStamp.'<br >';
    
        if($todayTimeStamp <= $dobTimeStamp)
        {
            $dob_check = 'NotYetBorn';
            //return false;
        }
        elseif(($this->year_check != 'YearValid') OR ($this->month_check != 'MonthValid') OR ($this->day_check != 'DayValid'))
        {
            $dob_check = 'DOBNotValid';
            //return false;
        }
        else
        {
            $dob_check = 'DOBValid';
            //return true;
        }
        
        $this->dob_check = $dob_check;
        //echo 'so dobd is ===> '.$this->dob_check.'<br />';
        return $this->dob_check;
    } // end function checkDOBD()
    
} // end class DOBD

?>

	// check day
    public function checkDay() {
        if(empty($this->day) OR ($this->day > 31))
        {
            $day_check = 'DayNotValid';
        }
        elseif(($this->day > 29) && ($this->month == 02))
        {
            $day_check = 'Daybad29';
        }
        else
        {
            $day_check = 'DayValid';
        }
       
        $this->day_check = $day_check;
	return $this->day_check;
    } // end function checkDay($this->day)


	// check month
    public function checkMonth() {

        echo $this->day; // devient un objet et non une string

    if(($this->day > 30) && (!in_array($this->month, $this->mw31d)))
        {
            $month_check = 'Monthbad31';
        }
        else
        {
            $month_check = 'MonthValid';
        }
           
        $this->month_check = $month_check;
       
        return $this->month_check;
    } // end function checkMonth($this->month)