angular $http怎么发起POST请求？

Question

var app = angular.module("app",["ngRoute"]);app.controller("ctrl",function($scope,$http) {     $http({         method:"POST",         url:"./json.php",         data:{time:123456}     }).success(function(data,status)     {         console.log(data);     }) }); PHP： <?php$time = $_POST['time'];echo <<<EOF{"a":"hello","time":"$time"}EOF;angular 不是用data作为POST参数吗？为什么PHP接收不到这个参数？