The old version of PHP escape the special characters in the JSON function _php tips

Make an API for an APP, fetch data from MySQL on the server side, and generate JSON. There is a field in the data called content, which holds the contents of the article, contains a large number of HTML tags, this field in the transfer of JSON need to escape, because a large number of special characters will destroy the JSON structure.

such as the content of this paragraph:

Copy Code code as follows:

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

It must be converted to:

Copy Code code as follows:

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

If PHP version > 5.2,json_encode is escaped with itself. If it's an older 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;
}

Often used, recorded, hope to help you.