I am trying to run the PHP Post request code on the bottom of this
page:
http://code.google.com/apis/chart/docs/post_requests.html
The image does not display in the browser and I am not sure how to
debug it. Any suggestions?
The PHP code for a page I named ChartTest,php is below:
<?php
// Create some random text-encoded data for a line chart.
header('content-type: image/png');
$url = 'https://chart.googleapis.com/chart?chid=' .
md5(uniqid(rand(), true));
$chd = 't:';
for ($i = 0; $i < 150; ++$i) {
$data = rand(0, 100000);
$chd .= $data . ',';
}
$chd = substr($chd, 0, -1);
// Add data, chart type, chart size, and scale to params.
$chart = array(
'cht' => 'lc',
'chs' => '600x200',
'chds' => '0,100000',
'chd' => $chd);
// Send the request, and print out the returned bytes.
$context = stream_context_create(
array(
'http' => array(
'method' => 'POST',
'content' => http_build_query($chart),
'header' => "Content-Type: application/x-www-form-urlencoded\r\n")));
fpassthru(fopen($url, 'r', false, $context));
?>
I am calling it from an html page as follows:
<html>
<img src="ChartTest.php">
</html>
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