php转义符号如何转换？

Question

php中返回的字符串是这样格式的[\"1\",\"2\",\"3\",\"4\"]我想替换成["1","2","3","4"]格式的

Answer 1

$str='[\"1\",\"2\",\"3\",\"4\"]';
echo preg_replace('/\\\/','',$str);

Answer 2

可能是你在PHP的配置中开启了自动转义输入数据（ magic_quotes_gpc），可以用 stripslashes()来消除转义符\
$input = '[\"1\",\"2\",\"3\",\"4\"]';
echo stripslashes($input);
// output: ["1","2","3","4"]