问没有从http.get 2到php文件的响应

EN

onSubmit(form:any)
    {
        this.name = form.value.name;
        this.email = form.value.email;
        this.mobile = form.value.mobile;
        /* ajax call*/
        alert(this.name+this.email+this.mobile);
     alert(this.authService.send_lead_information(this.name,this.email,this.mobile));
    }
    second file - auth.service.ts :

    import { Injectable } from '@angular/core';
    import {Http, Response} from "@angular/http";
    import any = jasmine.any;

    @Injectable()
    export class AuthService {
        constructor(private http:Http) {}

        send_lead_information(name,email,mobile)
        {
            return this.http.get('http://wwww.delikates.co.il/ajax.php?name='+name+'&email='+email+'&mobile='+mobile)
                .subscribe((data:Response)=>data.json()
                );
        }
    }