编译失败：缺少终端]字符类(Compilation failed: missing terminat

$date could be "23/09/2012" or "23-09-2012" or "23\09\2012" 
preg_split('/[\/\-\\]/', $date);

不知道为什么PHP保持掷missing terminating ] error ？

Answer 1:

preg_split('/[\/\-\\]/', $date);
                   ^escaping the closing ']' 

执行以下操作来代替，以去除不确定性

preg_split('/[\/\-\\\\]/', $date);

有没有必要逃避-但你可以使用\-为好。

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码：

$date = 'as\sad-s/p';
$slices =  preg_split('/[\/\-\\\\]/', $date);
print_r($slices);

输出：

Array ( [0] => as [1] => sad [2] => s [3] => p )

文章来源: Compilation failed: missing terminating ] for character class