Converting an array received via POST into new array

Question

I am sending an array through POST via a hidden input on a form. I am using JSON to populate the value of this hidden field with the array that I need to pass. On the form handler I then receive the array. However, when I try to count the number of items on the received array it says it is one. It seems that when I $_POST the received variable has the format of an array ["...","..."] but it not recognized as one. Can I cast it into an array? I used the explode() with the comma delimited but the exploded array maintains the '[' and ']' with the first and last elements of the array.

HTML: (here I am showing an example with the value field already populated)

<input type="hidden" name="uploadFilenames" id="uploadFilenames" value="["64034_397137903702241_1591760198_n.jpg","77089_399984063417625_1968141154_n.jpg"]">

PHP:

$filearray =    $_POST['uploadFilenames'];
$numFiles = count($filearray); 
for($i = 0; $i < $numFiles; $i++) {
    echo $filearray[$i] . "<br />";
}

json_decode\encode or serialize\unserialize

user557846
– user557846

2014-03-03 02:32:11 +00:00
Commented Mar 3, 2014 at 2:32 — user557846
– user557846, Commented Mar 3, 2014 at 2:32
*serialize/unserialize @Dagon :P

Cjmarkham
– Cjmarkham

2014-03-03 02:33:08 +00:00
Commented Mar 3, 2014 at 2:33 — Cjmarkham
– Cjmarkham, Commented Mar 3, 2014 at 2:33

Community · Accepted Answer · 2023-11-17 20:24:57Z

1

To parse JSON via PHP you will need to use json_decode()

$filearray = json_decode($filearray);

edited Nov 17, 2023 at 20:24

CommunityBot

11 silver badge

answered Mar 3, 2014 at 2:32

Cjmarkham

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