MySQL-我的代码中解析错误(语法错误) [英] Mysql - Parse error (syntax error) in my code
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问题描述
当我使用时:
$mysqli = new mysqli('localhost', 'root', '', 'cms');
在我的课堂上,结果显示错误:
in my class, As a result display Error:
Parse error: syntax error, unexpected '$mysqli' (T_VARIABLE), expecting function (T_FUNCTION) in D:\xamppp\htdocs\cms\includes\td-class-db.php on line 12
当使用$mysqli = new mysqli('localhost', 'root', '', 'cms');
超出类时,不会显示任何错误!
And when use $mysqli = new mysqli('localhost', 'root', '', 'cms');
outsilde the class no display any error!
我的课:
class Connect_db{
$mysqli = new mysqli('localhost', 'root', '', 'cms');
}
为什么?
推荐答案
在类中创建成员变量时无法实例化类.您必须在构造函数或方法中执行此操作:
You can't instantiate classes when creating member variables in a class. You have to do this in the constructor or a method:
class Connect_db{
private $mysqli;
public function __constructor() {
$this->mysqli = new mysqli('localhost', 'root', '', 'cms');
}
}
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