在PHP中将具有特殊字符的JSON解析为Array

{
    "api_response": "{\"LeadRefNumber\":\"23223222433534543554\",\"ApplicationNumber\":\"2323343434234234\",\"StatusCode\":\"3456\",\"ProcessingStatus\":\"111\",\"CreditLimit\":\"5454554\",\"Messages\":{\"Message\":\"test.\"}}"
}

NOTE: The above is the json encoded one, but couldn't access it as array even if the json is decoded with json_decode().

$creditLimit = {"api_response":"{\"LeadRefNumber\":\"3434343345435453\",\"ApplicationNumber\":\"5345345345345534\",\"StatusCode\":\"13420\",\"ProcessingStatus\":\"145\",\"CreditLimit\":\"4500000\",\"Messages\":{\"Message\":\"Test\"}}"};

$arrCreditLimit = json_decode($creditLimit['api_response'], true);

print_r("CreditLimit".$arrCreditLimit['CreditLimit']);

Output:

CreditLimit: 4500000

Found the solution by the above way.