How to get file from Form Data in the server - php

Question

I cant get the file data on the server. _$FILE says is empty. I do this trough ionic app. I send the information in http params.
cargarFoto(idnegocio,formData) {
let datos = new HttpParams()
.set("proceso", "subirImgNegocioApp")
.set("imgRestaurante", formData)
.set("idnegocio", idnegocio)
let headerOptions = new HttpHeaders().set('Content-Type', 'application/x-www-form-urlencoded');
return this.http.post(this.path,datos, {
observe: 'response',
responseType: 'text',
headers: headerOptions
});
}
That is the code from my service where i send the form Data and other information.
But when i use $_FILES to get the file, it says is null or empty. What im doing wrong? Actually all the information is get on $_POST. I returned post to the app and this is what displays:
body: "{
"proceso": "subirImgNegocioApp",
"imgRestaurante": "[object FormData]",
"idnegocio": "4"
}"

Answer 1

I can suggest little different approach - send everything as form data:
sendSomething(someVar: string, files: File[]) {
const formData = new FormData();
for (const f of files) {
formData.append('file[]', f);
}
formData.append('someVar', someVar);
return this.http.post('/someUrl', formData, {
headers: new HttpHeaders({ enctype: 'multipart/form-data' })
});
}
Then in PHP:
$someVar = $_REQUEST['someVar']
And files (or one file) will be in
$_FILES['file']