Working with PHP in VUE

Hi, I'm trying to work with PHP in VUE... But I'm getting stuck in here...

this.$http.get('../api/api.php', {params: {pagination: this.pagination}})
            .then(response => {
              this.$set('items', response.data)
              this.$set('pagination', response.data.pagination)
              console.log(items)
            })
            .catch(e => {
              // this.errors.push(e)
              console.log(e)
            })

Only returns: 404 (Not Found) Already changed to .src/api/api.php, src/api/api.php ... for everything that you can imagine and nothing, only 404. If I use XAMPP to host api.php and use http://localhost/api.php I get error because -> Access-Control-Allow-Origin

Please, any solutions? I was using json api before, but when I build and upload to a hosting service (not node) I cant post on json.