我有一个像下面这样的字符串。但是json_encode函数返回null。因为它包含这样的内容：
先生。布朗（ketaptin \ xc3 \ xa7al \ xc4）
原文： 先生。布朗（ketaptinçalışanı）
我该如何解决这个问题？我应该使用哪种功能？
我的阵列：
[success] => 1\n [message] => \n
[error_code] => -1\n
[data] => Array\n (\n
[contact_subjects] => Array\n (\n [0] => Array\n (\n
[contact_subject_id] => 1\n [name] => \xc3\x96neri\n )\n\n [1] => Array\n (\n [contact_subject_id] => 2\n [name] => Soru\n )\n\n [2] => Array\n (\n [contact_subject_id] => 3\n [name] => \xc3\x96deme Bilgisi\n )\n\n [3] => Array\n (\n [contact_subject_id] => 4\n [name] => \xc5\x9eikayet\n )\n\n [4] => Array\n (\n [contact_subject_id] => 5\n [name] => Ortakl\xc4\xb1k\n )\n\n [5] => Array\n (\n [contact_subject_id] => 6\n [name] => Arad\xc4\xb1m Bulamad\xc4\xb1m\n )\n\n [6] => Array\n (\n [contact_subject_id] => 7\n [name] => E-Kitap\n )\n\n [7] => Array\n (\n [contact_subject_id] => 8\n [name] => Mobil Uygulamalar\n )\n\n [8] => Array\n (\n [contact_subject_id] => 9\n [name] => Reklam\n )\n\n )\n\n [customer_name] => Mr. Brown (ketaptin \xc3\xa7al\xc4\n [customer_email] => hrev@hotmail.com\n )\n\n)\n
对不起代码。你可以从这里美化它：http://phillihp.com/toolz/php-array-beautifier/