How to handle array returned from PHP?
Can anyone advise on how to parse returned data from a PHP script?
I've got jQuery sending form inputs via ajax to a PHP script, which operates on the inputs, pushes the results into an array, and sends back the array.
I want to plot the data, but I'm not sure what to do with what comes back ("data"); how to wrestle it into a JavaScript array that can be plotted.
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My form has a few buttons & sliders & whatnot. Values are sent off to PHP via ajax:
var a = $("#a").slider('value'); etc.
var sendThis = $("#theForm").serialize();
$.post("my.php", sendThis, function (data) { $('#someDiv').html(data); }); // so far so good.
Then, over at my.php:
<?php
$a = $_POST['a']; etc.
$plotData = array();
for ( $i=0; $i<10; $i++ ) {
$val = some operation on $a
array_push($plotData, $val);
}
print_r($plotData);
?>
That works too & "#someDiv" displays the array returned from my.php, but:
$.plot($("#showPlotHere"), [ plotData] ); just results in an empty plot.
I got plotting working (using Flot) when the code is all in the jQuery page, not involving PHP.
Now I want PHP to do the calculations and just send back data to be plotted by Flot.
Maybe I need to create another array within jQuery (in the .post function) to receive the array from PHP?
How do I dump the returning "(data)" into some array in jQuery that I can operate on with $.plot?
This feels like something simple but I don't get it.
Thank you in advance for any pointers.