Xml to sql database - php

Question

iam trying to make an php file to import xml to sql database, but i have this error-:
Warning: Invalid argument supplied for foreach() in /home/morrisse/public_html/xml_to_database.php on line 18
My code:
$url ="http://www.example/example.xml";
$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_URL, $URL); //GET THE URL CONTENDS
$data = curl_exec ($ch); //execute the curl request
curl_close($ch);
$xml = simplexml_load_string($data);
foreach ($xml -> track as $row) {
$title = $row -> name;
$artist = $row -> artist;
$duration = $row -> duration;
// performing sql query
$sql = "INSERT INTO 'test_xml' ('title', 'artist', 'duration')"
. "VALUES ('$title', '$artist', '$duration')";
$result = mysql_query($sql);
if (!result) {
echo 'MYSQL ERROR';
} else {
echo 'SUCESSO';
}
}
my xml:
<lfm status="ok">
<track>
<id>602366984</id>
<name>Barbarism Begins At Home (BBC TV Tube performance)</name>
<mbid/>
<url>http://www.last.fm/music/The+Smiths/_/Barbarism+Begins+At+Home+(BBC+TV+Tube+performance)</url>
<duration>384000</duration>
<streamable fulltrack="0">0</streamable>
<listeners>10</listeners>
<playcount>24</playcount>
<artist>
<name>The Smiths</name>
<mbid>40f5d9e4-2de7-4f2d-ad41-e31a9a9fea27</mbid>
<url>http://www.last.fm/music/The+Smiths</url>
</artist>
<toptags>
</toptags>
</track>
</lfm>
help please?
The full code:
<?php
$url ="http://www.morrisseyradio.com/shoutcastinfo/cache/track.xml";
$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_URL, $URL); //GET THE URL CONTENDS
$data = curl_exec ($ch); //execute the curl request
curl_close($ch);
$con=mysql_connect("localhost", "", ""); //connect to database
mysql_select_db("morrisse_forum", $con)
if (!$con) {
die('Could not connect: ' . mysql_error());
}; // select database
libxml_use_internal_errors(true);
$xml = simplexml_load_string($data);
if ($xml === false) {
$errors = libxml_get_errors();
foreach ($errors as $error) {
echo "XML Error at line $error->line: $error->message\n";
}
}
else {
foreach ($xml -> track as $row) {
$title = $row -> name;
$artist = $row -> artist;
$duration = $row -> duration;
// performing sql query
$sql = "INSERT INTO 'test_xml' ('title', 'artist', 'duration')"
. "VALUES ('$title', '$artist', '$duration')";
$result = mysql_query($sql);
if (!result) {
echo 'MYSQL ERROR';
} else {
echo 'SUCESSO';
}
}
}
?>

Answer 1

For anyone the answer is:
First thing:
in the line:
curl_setopt($ch, CURLOPT_URL, $URL);
the "$URL" must be Lower
Second:
In this line:
$sql = "INSERT INTO 'test_xml' ('title', 'artist', 'duration')"
the "'" must be "`"

Answer 2

It's pretty clear that your call to simplexml_load_string() failed because the xml was not well formed. When that happens you get back false rather than a usable xml element.
Here's what I suggest you do about this. Add some error-tracking code, as follows.
libxml_use_internal_errors(true);
$xml = simplexml_load_string($data);
if ($xml === false) {
$errors = libxml_get_errors();
foreach ($errors as $error) {
echo "XML Error at line $error->line: $error->message\n";
}
}
else {
foreach ( $xml->track as $row ) { /* your code continues here ... */
There's clearly something wrong with the xml you're getting back from that server you're using with curl. This code will help you figure out what is wrong.