How to determine whether it is json data (format) in php_PHP tutorial

First of all, remember that json_encode returns a string, and json_decode returns an object.

Judge that the data is not in JSON format:

The code is as follows
代码如下
function is_not_json($str){       return is_null(json_decode($str)); }

function is_not_json($str){

return is_null(json_decode($str));
}

代码如下
function is_json($string) { www.111cn.net  json_decode($string);  return (json_last_error() == JSON_ERROR_NONE); }

Judge whether the data is legal json data: (PHP version is greater than 5.3)

The code is as follows
function is_json($string) { www.111cn.net json_decode($string); return (json_last_error() == JSON_ERROR_NONE); }

The json_last_error() function returns errors that occurred during the data encoding and decoding process.* 解析json串
* @param type $json_str
* @return type
*/
function analyJson($json_str) {
$json_str = str_replace('＼＼', '', $json_str);
$out_arr = array();
preg_match('/{.*}/', $json_str, $out_arr);
if (!empty($out_arr)) {
$result = json_decode($out_arr[0], TRUE);
} else {
return FALSE;
}
return $result;
}

代码如下

Note: The strings operated by json encoding and decoding must be UTF8.

Example

The code is as follows
* Parse json string* @param type $json_str * @return type */ function analyzeJson($json_str) { $json_str = str_replace('＼＼', '', $json_str); $out_arr = array(); preg_match('/{.*}/', $json_str, $out_arr); if (!empty($out_arr)) { $result = json_decode($out_arr[0], TRUE); } else { return FALSE; } return $result; }

• If it is not json, return false
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http://www.bkjia.com/PHPjc/738511.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/738511.htmlTechArticleFirst of all, remember that json_encode returns a string, and json_decode returns an object. To determine if the data is not in JSON format: The code is as follows function is_not_json($str){ return is_null(json_decode...