PHP警告:非法的字符串偏移量 [英] PHP Warning: Illegal string offset

问题描述

我是PHP的新手. 今天，PHP已从5.3.3迁移到5.4.4版本(从Debian Squeeze迁移到Debian Wheezy)，在此之后，我从Apache日志中得到了此错误:

I am newbie in PHP. A PHP was migrated today from 5.3.3 to 5.4.4 version (Debian Squeeze to Debian Wheezy) and, after this, I get this error from Apache log :

> PHP警告:xyz中的非法字符串偏移量'phptype'

该行是:

self::$conn[$dsn['phptype']] = $mdb2;

我需要帮助来还原系统.

I need help to restore the system.

推荐答案

<?php
$a = 'Hello';
echo $a['whatever'];
?>

正如评论中的某些人所说的那样，执行类似的操作可能会导致该错误.如您在上面的示例中看到的，$a是一个字符串而不是一个数组.这意味着您无法使用键来访问它(但是，如果您想获取字符串中的第三个字母，则可以执行$a[2].)

As some of the guys in the comments are saying, doing something like this would probably cause that error. As you can see in the example above $a is a string rather than an array. This means that you cannot access it with a key (if however you wanted to get the 3rd letter in the string it would be ok to do $a[2]).

您需要检查self::$conn和$dsn实际上是数组而不是字符串.正如ÁlvaroG. Vicario在评论中所说，您可以通过转储变量来做到这一点:

You need to check that self::$conn and $dsn are actually arrays rather than strings. As Álvaro G. Vicario says in the comments, you can do this by dumping the variable:

var_dump(self::$conn, $dsn)

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