php - Compilation failed: missing terminating ] for character class

Question

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

Not sure why PHP keep throw missing terminating ] error?

Answer 1

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

あいまいさを取り除くために、代わりに次のことを行います

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

エスケープする必要はありませんが、同様に-使用できます。\-

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コード：

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

出力：

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