如http://php.net/manual/en/language.types.array.php所述
Note: As of PHP 7.1.0, applying the empty index operator on a string throws a Fatal error. Formerly, the string was silently converted to an array.
有人可以告诉我一个例子是什么意思吗？
它将如何影响我的代码？
谢谢！
解决方法:
在PHP中< 7.1：
$var = 'somestring';
$var[] = 'a'; # yields array with two elements ['somestring', 'a']
在PHP> = 7.1中,得出
Fatal error: Uncaught Error: [] operator not supported for strings
