我想从PHP脚本返回JSON。
我只是重复结果吗?我必须设置内容类型头吗?
我想从PHP脚本返回JSON。
我只是重复结果吗?我必须设置内容类型头吗?
当前回答
设置访问安全性也很好——只需将*替换为您希望能够访问它的域。
<?php
header('Access-Control-Allow-Origin: *');
header('Content-type: application/json');
$response = array();
$response[0] = array(
'id' => '1',
'value1'=> 'value1',
'value2'=> 'value2'
);
echo json_encode($response);
?>
这里有更多的例子:如何绕过Access-Control-Allow-Origin?
其他回答
您可以使用这个小型PHP库。它发送头文件并给你一个容易使用它的对象。
它看起来是这样的:
<?php
// Include the json class
include('includes/json.php');
// Then create the PHP-Json Object to suits your needs
// Set a variable ; var name = {}
$Json = new json('var', 'name');
// Fire a callback ; callback({});
$Json = new json('callback', 'name');
// Just send a raw JSON ; {}
$Json = new json();
// Build data
$object = new stdClass();
$object->test = 'OK';
$arraytest = array('1','2','3');
$jsonOnly = '{"Hello" : "darling"}';
// Add some content
$Json->add('width', '565px');
$Json->add('You are logged IN');
$Json->add('An_Object', $object);
$Json->add("An_Array",$arraytest);
$Json->add("A_Json",$jsonOnly);
// Finally, send the JSON.
$Json->send();
?>
如果你需要从发送自定义信息的php中获取json,你可以添加这个头('Content-Type: application/json');在打印任何其他东西之前,所以然后你可以打印你的自定义echo '{"monto": "'.$monto[0]->valor.'","moneda":"'.$moneda[0]->nombre.'","simbolo":"'.$moneda[0]->simbolo.'"}';
如果你想要js对象,使用头content-type:
<?php
$data = /** whatever you're serializing **/;
header('Content-Type: application/json; charset=utf-8');
echo json_encode($data);
如果你只想要json: remove header content-type属性,只需要encode和echo。
<?php
$data = /** whatever you're serializing **/;
echo json_encode($data);
<?php
$data = /** whatever you're serializing **/;
header("Content-type: application/json; charset=utf-8");
echo json_encode($data);
?>
这个问题有很多答案,但没有一个涵盖了返回干净JSON的整个过程,以及防止JSON响应变形所需的一切。
/*
* returnJsonHttpResponse
* @param $success: Boolean
* @param $data: Object or Array
*/
function returnJsonHttpResponse($success, $data)
{
// remove any string that could create an invalid JSON
// such as PHP Notice, Warning, logs...
ob_clean();
// this will clean up any previously added headers, to start clean
header_remove();
// Set the content type to JSON and charset
// (charset can be set to something else)
header("Content-type: application/json; charset=utf-8");
// Set your HTTP response code, 2xx = SUCCESS,
// anything else will be error, refer to HTTP documentation
if ($success) {
http_response_code(200);
} else {
http_response_code(500);
}
// encode your PHP Object or Array into a JSON string.
// stdClass or array
echo json_encode($data);
// making sure nothing is added
exit();
}
引用:
response_remove
ob_clean
JSON内容类型
HTTP规范
http_response_code
json_encode