Functions for escaping special characters in Json in older PHP versions

This article will share with you a function that uses the special characters in Json in php of the old version. although it is not very practical, record it, if you have any need, refer. Create an API for an App, extract data from MySQL on the server, and generate JSON. There is a field in the data called content, which stores the content of the article and contains a large number of HTML tags. This field needs to be escaped when converted to json, because a large number of special characters will damage the json structure.

For example, the following content:

The code is as follows:

'Lorem ipsum "dolor" sit amet, consectetur \ adipiscing elit .'

It must be converted:

The code is as follows:

Lorem ipsum \ "dolor \" sit amet, \ nconsectetur \ adipiscing elit.

If the PHP version is later than 5.2, json_encode comes with an escape character. If it is an old version of PHP, you can use the following function.

# list from www.json.org: (\b backspace, \f formfeed)public function escapeJsonString($value) {  $escapers = array("\\", "/", "\"", "\n", "\r", "\t", "\x08", "\x0c");  $replacements = array("\\\\", "\\/", "\\\"", "\\n", "\\r", "\\t", "\\f", "\\b");  $result = str_replace($escapers, $replacements, $value);  return $result;}

It is often used. record it and hope to help you.