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Home Backend Development PHP Tutorial 出错:类的对象不能被转换为字符串,如果在服务器端设置忽略?

出错:类的对象不能被转换为字符串,如果在服务器端设置忽略?

Jun 23, 2016 pm 02:11 PM

Catchable fatal error: Object of class  could not be converted to string in 
出错:类的对象不能被转换为字符串

据说造成这个原因是因为:php5 中是不能用 = 直接把对像赋值给变量的, = 和 =& 都是一样都是对像的reference而不是copy所以当对像关了, $a 所参考的值也没了


那怎么在服务器端设置一下,让php5能直接传递 = 变量,而不用转换库字符串?这样就不会有那个出错提示


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贴出相关代码!

        function DB_Error($code = DB_ERROR,
                                          $mode = PEAR_ERROR_RETURN,
                                          $level = E_USER_NOTICE,
                                          $debuginfo = null) {
                if (is_int($code)) {
                        $this->PEAR_Error("DB Error: ".DB::errorMessage($code), $code, $mode, $level, $debuginfo);
                } else {
                        $this->PEAR_Error("DB Error: $code", 0, $mode, $level, $debuginfo);
                }
        }
}

代码没问题,在其它服务器上都能正常运行,就这台服务器不行,应该与服务器配置有关,是不是php.ini中有哪项要设置一下?

如果将数据库中int(12)改成varchar(12),打开网页就没有出错警告,但总不能把数据库中所有int都改成varchar吧,何况网站程序和数据库在其他服务器空间都能正常运行,所以应该是这台服务器哪里有问题,请指教!!谢!!!

那可能是你的 PEAR 版本问题吧
国内很少有人用这个玩意的,你到国外的网站去问问

查到一些资料,但不明白哪一项可以忽略错误后让网页正常显示?
PEAR_Error
PEAR_Error是PEAR的错误对象的一个基类,和PEAR不同,一般来说,你可以直接创建PEAR_Error的实例,创建方式: $error = new PEAR_Error($message, $code, $mode, $options, $userinfo);

$message是你的错误信息,$code是该错误的错误号,后3个参数是紧密联系的:
$mode:是这个错误的处理模式,可以下列常量:
PEAR_ERROR_RETURN:仅仅返回该错误对象(缺省方式)
PEAR_ERROR_PRINT:在构建函数中打印这个错误信息,但是当前程序会继续运行。
PEAR_ERROR_TRIGGER:使用PHP的trigger_error() 触发一个错误,如果你已经设置了错误处理函数,或者你把PHP的错误处理级别设置为E_USER_ERROR,那么当前程序将会被终止。
PEAR_ERROR_DIE:打印错误并退出,程序终止。
PEAR_ERROR_CALLBACK:使用一个回调函数或者方法来处理当前错误,程序终止。
$options:这个参数只有在$mode是PEAR_ERROR_TRIGGER和PEAR_ERROR_CALLBACK的时候才起作用,如果是PEAR_ERROR_TRIGGER,$options必须是E_USER_NOTICE, E_USER_WARNING 或 E_USER_ERROR这3个常量的一个,同PHP中trigger_error的值一致。如果$mode是PEAR_ERROR_CALLBACK,$options可以是一个字符串,内容是要回调的函数名,也可以是一个2元素的数组,分别是一个对象变量,和一个字符串(标明要调用的方法)。
$userinfo:存放附加的用户信息,你可以把相关的调试信息放在这里。

PEAR_Error中有一些常用的方法,这些方法在PHP文挡没有描述,这里一一列出:

int getMode:返回当前的错误处理模式,整型。
string getMessage:返回当前完整的错误信息,字符串。
mixed getCallback:返回当前的回调信息,可能是所回调的函数名,或者是(对象,方法)的数组。
int getCode:返回整型的错误代码。
string getType:返回错误的类型,也就是当前的类名,字符串。
string getUserInfo:返回附加的用户信息,字符串。
string getDebugInfo:内容同上。
string toString:返回当前对象的详细字符串描述,内容包括错误处理的模式,级别,错误信息,错误代码,相关回调函数等等。

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