Question

致命错误：未捕获错误：调用成员函数格式（）布尔在/homepages/21/*****/*****/******/card/upload.php:29堆栈跟踪：＃0 {main}被抛入第29行/homepages/21/******/*****/*****/card/upload.php

$newarray['date'] = DateTime::createFromFormat("j M Y", $arry[0])->format("Y-m-d");

如何解决这个问题？

Answer 1

很明显，您通过$arry[0]传递了无效的日期表达。

这是demo：

// it works when $arry[0] is valid
$arry=['28 Jan 2017'];
$newarray['date'] = DateTime::createFromFormat("j M Y", $arry[0])->format("Y-m-d");
echo $newarray['date'];

echo "\n\n";

// it doesn't otherwise
$arry=['28 Mon 2017'];  // or an empty string, etc.
$newarray['date'] = DateTime::createFromFormat("j M Y", $arry[0])->format("Y-m-d");
echo $newarray['date'];

输出：

2017-01-28

<br />
<b>Fatal error</b>:  Uncaught Error: Call to a member function format() on boolean in [...][...]:16
Stack trace:
#0 {main}
  thrown in <b>[...][...]</b> on line <b>16</b><br />

DateTime对象错误：在布尔值上调用成员函数format（）

1 个答案: