關於php版本號碼的錯誤詳解

<?php
class Car
{
    var $color = "add";
    function Car($color="green") {
        $this->color = $color;
    }
    function what_color() {
        return $this->color;
    }
}

$car = new Car;
echo $car->what_color(),"<br>over";
?>

PHP版本號碼

#php 7.0.10

所報錯誤

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Car has a deprecated constructor in E:\phpStorm\firstPhp\test.php# on line 8

解決方式

#查閱資料，發現php7.0之後將不再支援與類別名稱相同的建構方法，建構方法統一使用__construct()。

#修正後程式碼

<?php
class Car
{
    public $color = "add";
    function __construct($color="green") {   //注意是双下划线$this->color = $color;
    }
    public function what_color() {
        return $this->color;
    }
}

$car = new Car("red");
echo $car->what_color(),"<br>over";
?>

 

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