$.ajax({
 type: 'POST',
 url:'process.php',
 data: formData,
 dataType: 'json',
 success: function(result){
 //do something
 }
 });

$http({
 method : 'POST',
 url: 'process.php',
 data: $.param($scope.formData), //序列化参数
 headers: { 'Content-Type': 'application/x-www-form-urlencoded' } )
})　

$input = file_get_contents("php://input",true);
echo $input;　

// Your app's root module...
angular.module('MyModule', [], function($httpProvider) {
 // Use x-www-form-urlencoded Content-Type
 $httpProvider.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded;charset=utf-8';
 
 /**
 * The workhorse; converts an object to x-www-form-urlencoded serialization.
 * @param {Object} obj
 * @return {String}
 */
 var param = function(obj) {
 var query = '', name, value, fullSubName, subName, subValue, innerObj, i;
 
 for(name in obj) {
 value = obj[name];
 
 if(value instanceof Array) {
 for(i=0; i<value.length; ++i) {
 subValue = value[i];
 fullSubName = name + '[' + i + ']';
 innerObj = {};
 innerObj[fullSubName] = subValue;
 query += param(innerObj) + '&';
 }
 }
 else if(value instanceof Object) {
 for(subName in value) {
 subValue = value[subName];
 fullSubName = name + '[' + subName + ']';
 innerObj = {};
 innerObj[fullSubName] = subValue;
 query += param(innerObj) + '&';
 }
 }
 else if(value !== undefined && value !== null)
 query += encodeURIComponent(name) + '=' + encodeURIComponent(value) + '&';
 }
 
 return query.length "htmlcode">

$http({
 method:"POST",
 url:"/api/login.php",
 data:$scope.Account
});


补:
php获取时也可通过$GLOBALS['HTTP_RAW_POST_DATA']获取POST提交的原始数据.


但$GLOBALS['HTTP_RAW_POST_DATA']中是否保存POST过来的数据取决于centent-Type的设置，即POST数据时 必须显式示指明Content-Type: application/x-www-form-urlencoded，POST的数据才会存放到 $GLOBALS['HTTP_RAW_POST_DATA']中.
总结