從PHP中的空值創(chuàng)建默認(rèn)對象？只有在將PHP環(huán)境升級到PHP5.4及更高版本之后，我才會看到此錯(cuò)誤。錯(cuò)誤指向這一行代碼：錯(cuò)誤：從空值創(chuàng)建默認(rèn)對象代碼：$res->success = false;我首先需要聲明我的$res反對？
3 回答
繁星淼淼
TA貢獻(xiàn)1775條經(jīng)驗(yàn) 獲得超11個(gè)贊
E_STRICTerror_reportingerror_reportingE_WARNING$resNULL
$res = NULL;$res->success = false; // Warning: Creating default object from empty value
$res
$res = 33;$res->success = false; // Warning: Attempt to assign property of non-object
E_STRICTE_WARNINGsuccess$resstdClass
$res = new \stdClass();$res->success = false;
牧羊人nacy
TA貢獻(xiàn)1862條經(jīng)驗(yàn) 獲得超7個(gè)贊
E_STRICTE_WARNINGE_WARNING
if (!isset($res)) $res = new stdClass();$res->success = false;
呼如林
TA貢獻(xiàn)1798條經(jīng)驗(yàn) 獲得超3個(gè)贊
$res = (object)array("success"=>false); // $res->success = bool(false);$res = (object)array(); // object(stdClass) $res = new stdClass(); // old method
$res->success = !!0; // bool(false) $res->success = false; // bool(false) $res->success = (bool)0; // bool(false)
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