Databases
StackOverflow2013
Postsdbo
POPassing JSON-encoded variable from PHP to Javascript via POST
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POPassing JSON-encoded variable from PHP to Javascript via POST
    primarykey
    data
    text
    <p>I have an multi-dimensional array that I want to send to a PHP script with a Javascript that parses the JSON data and plot it on Google Maps. I'm trying to simulate it using forms:</p> <pre><code>&lt;?php $jsontest = array( 0 =&gt; array( 'plate_no' =&gt; 'abc111', 'longlat' =&gt; array(121.003895,14.631563), 'info' =&gt; 'first item' ), 1 =&gt; array( 'plate_no' =&gt; 'abc222', 'longlat' =&gt; array(121.103895,14.731563), 'info' =&gt; 'second item' ) ); $jsonarray = json_encode($jsontest); ?&gt; &lt;form action="json-target.php" method="post" accept-charset="utf-8"&gt; &lt;input type="hidden" name="jsonarray" value="&lt;?php echo $jsonarray; ?&gt;" id="jsonarray"&gt; &lt;p&gt;&lt;input type="submit" value="Continue &amp;rarr;"&gt;&lt;/p&gt; &lt;/form&gt; </code></pre> <p>json-target.php looks like this:</p> <pre><code>&lt;?php print "The value of \$_POST is "; print_r($_POST); ?&gt; </code></pre> <p>And the output of <code>$_POST</code> is <code>Array ( [jsonarray] =&gt; [{ )</code>. I wanted to pass the contents of the <code>$jsonarray</code> variable to a Javascript function (please see update below).</p> <p><strong>UPDATE:</strong> I also have a simple Javascript that's supposed to parse the value received from <code>$_POST</code> and post the value via <code>alert()</code>:</p> <pre><code>&lt;script src="/js/json2.js" type="text/javascript" charset="utf-8"&gt;&lt;/script&gt; &lt;script type="text/javascript" charset="utf-8"&gt; var json = JSON.parse(&lt;?php echo $_POST['jsonarray'] ?&gt;); for (var i = 0; i &lt; json.length; i++) { alert(json[i]); } &lt;/script&gt; </code></pre> <p>But the output is mangled with backslash characters.</p> <pre><code>var json = JSON.parse([{\"plate_no\":\"abc111\",\"longlat\":[121.003895,14.631563],\"info\":\"first item\"},{\"plate_no\":\"abc222\",\"longlat\":[121.103895,14.731563],\"info\":\"second item\"}]); </code></pre> <p>What's a better way of doing this?</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USFrancis
    1. USFrancis
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POPassing JSON-encoded variable from PHP to Javascript via POST
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POPassing JSON-encoded variable from PHP to Javascript via POST
      1. USBakhtiyor
      1. VTFavorite
    3. VO
      singulars
      1. POPassing JSON-encoded variable from PHP to Javascript via POST
      1. This table or related slice is empty.
      1. VTUpMod
    1. COWhat exactly is the question?
      singulars
      1. POPassing JSON-encoded variable from PHP to Javascript via POST
      1. USrojoca
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload