How to pass a Javascript array of any size to PHP

Question

I have an array in Javascript with many possible sizes. Is there any way for me to pass it to a PHP file for computation?

I would like to use something like a form in html

<form id="barfoo" action="foobar.php" method="post">
  <input type="hidden" name="foo">
  <input type="hidden" name="bar"> 
  <input type="hidden" name="bam">
</form>

Usually, these inputs are strings. Is there any way to have an array as input to pass? Like fooarray=['abc', 'dbe', '3r'], or fooarray=['1','c','4','5']. Before it is generated, I don't know the size of it. Is it possible to put it in a form and pass?

Thanks a lot!

Yogesh Suthar · Accepted Answer · 2012-12-17 07:50:41Z

4

use JSON.stringify(array) to encode your array in JavaScript, and then use $arr=json_decode($_POST['jsondata']); in PHP

answered Dec 17, 2012 at 7:50

Yogesh Suthar

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MrCode · Accepted Answer · 2012-12-17 07:56:55Z

2

Encode the array into JSON and then insert it into one of the hiddens. This could be done in the forms onsubmit event.

<form id="barfoo" action="foobar.php" method="post" onsubmit="populate()">
<input type="hidden" id="foo" name="foo">
</form>

<script>
var  fooarray=['1','c','4','5'];

function populate()
{
    document.getElementById("foo").value = JSON.stringify(fooarray);
}
</script>

PHP has native support for decoding JSON using json_decode():

$fooArray = json_decode($_POST['foo']);
print_r($fooArray);

edited Dec 17, 2012 at 7:56

answered Dec 17, 2012 at 7:51

MrCode

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1 Comment

zb' Over a year ago

may be send them as ajax ?

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