Passing arrays to php page

Question

I've been struggling on how to solve this. I wasn't able to find any solutions over the internet.

This a part of the code:

var params = "nome=" + encodeURI(document.getElementById("nome").value )+
"&email=" + encodeURI(document.getElementById("email").value )+
"&telefone=" + encodeURI(document.getElementById("telefone").value )+
"&produto=" + encodeURI(document.getElementsByName("produto[]") )+
"&quantidade=" + encodeURI(document.getElementsByName("quantidade[]") )+
"&msg=" + encodeURI(document.getElementById("msg").value );
xmlhttp.open("POST", url, true);
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlhttp.setRequestHeader("Content-length", params.length);
xmlhttp.setRequestHeader("Connection", "close");

"produto" and "quantidade" are arrays, coming from a form. How to pass this values to my php page (I want to send the content via email).

HTML Forms doesn't have arrays. Could you elaborate on what you're trying to accomplish, perhaps show us your HTML? — Hubro
– Hubro, Commented Jul 26, 2011 at 19:45
if they are check boxes it could be passed to php as an array I believe — David Nguyen
– David Nguyen, Commented Jul 26, 2011 at 19:48
what are the form elements that have the names produto[] and quantidade[] — Bob Fincheimer
– Bob Fincheimer, Commented Jul 26, 2011 at 19:53

Toby Allen · Accepted Answer · 2011-07-26 19:49:50Z

2

using jquery the serialize() function will turn your array into a string to pass to your server

$('[name=produto]').serialize()

http://api.jquery.com/serialize/

edited Jul 26, 2011 at 19:49

Toby Allen

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answered Jul 26, 2011 at 19:44

Johnny Craig

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2 Comments

Marc B Over a year ago

Far easier to let jquery handle the form serialization/ajax stuff than trying to roll your own. +1.

Paulo Over a year ago

That's great, using serialize makes it way simple! Awesome, my application is working like a charm now. Thank you guys for the replies.

Bob Fincheimer · Accepted Answer · 2011-07-26 19:50:23Z

0

I briefly remember if you do this: (this is also how jQuery serialize works)

var myArrayToPost = [1, 2, 3];
var postString = "";
for(<-- Iterate over myArrayToPost -->) {
   postString += "MyArray[]=" + value + "&";
}
<-- Post postString -->

Basically you want the post to be this:

"MyArray[]=FirstValue&MyArray[]=SecondValue&MyArray[]=ThirdValue"

Then PHP will automatically put that into an array in $_POST so you can get it:

$_POST['MyArray'] // which will equal 
                  // array(
                  //   'FirstValue',
                  //   'SecondValue', 
                  //   'ThirdValue'
                  // );

answered Jul 26, 2011 at 19:50

Bob Fincheimer

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Comments

Dharman · Accepted Answer · 2020-01-26 00:54:44Z

0

When you pass parameters in http request, each one of them is a pair name=value, so produto=1 is a parameter produto with 1 as its value. To take an "array" from http request you must build the several parameters with same name, something like produto=1&produto=2& ...

edited Jan 26, 2020 at 0:54

Dharman♦

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answered Jul 26, 2011 at 19:57

Ademir Mazer Jr - Nuno

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2 Comments

Paulo Over a year ago

Ademir, acabei optando pelo "serialize", muito simples e funcional, obrigado.

Ademir Mazer Jr - Nuno Over a year ago

Não conhecia esta solução, creio que vou adotar também, abraços Paulo.

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