Example of PHP Method for Sending JSON Format Strings Based on CURL

This article illustrates how PHP sends JSON format strings based on CURL. Share it for your reference, as follows:

/*
* post  Send JSON  Format data 
* @param $url string URL
* @param $data_string string  Specific content of the request 
* @return array
*   code  Status code 
*   result  Return results 
*/
function post_json_data($url, $data_string) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array(
        'Content-Type: application/json; charset=utf-8',
        'Content-Length: ' . strlen($data_string))
    );
    ob_start();
    curl_exec($ch);
    $return_content = ob_get_contents();
    ob_end_clean();
    $return_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    return array('code'=>$return_code, 'result'=>$return_content);
}
$arr = array('a'=>'555','b'=>56454564);
dump(post_json_data('http://192.168.211.1/html/dump.php',json_encode($arr)));

Note: When receiving data, it is not used $_POST , but

$content = file_get_contents('php://input');

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Online JSON code verification, verification, beautification and formatting tools:
http://tools.ofstack.com/code/json

JSON Online Formatting Tool:
http://tools.ofstack.com/code/jsonformat

Online XML/JSON Interconversion Tool:
http://tools.ofstack.com/code/xmljson

json code online formatting/beautification/compression/editing/conversion tool:
http://tools.ofstack.com/code/jsoncodeformat

C Language Style/HTML/CSS/json Code Formatting and Beautification Tool:
http://tools.ofstack.com/code/ccode_html_css_json

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I hope this article is helpful to everyone's PHP programming.