Modify Script for XML Files

Liu · June 12, 2011

Hey guys

I have this code here, to add/delete xml File Entrys. But i need a Modification for it, which would add the new Entrys to the Top instead of the Bottom.

But since im not that good with php, nothing worked so far. Could someone help me out somehow?

Thanks for any kind of Help in advance!

Liu

processForm.php

$songs = Array();
function start_element($parser, $name, $attrs){
global $songs;
if($name == "song"){
	array_push($songs, $attrs);
}
}
function end_element ($parser, $name){}
$playlist_string = file_get_contents("playlist.xml");
$parser = xml_parser_create();
xml_set_element_handler($parser, "start_element", "end_element");
xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
xml_parse($parser, $playlist_string) or die("Error parsing XML document.");
print "<br />";
if($_POST['action'] == "ins"){
array_push($songs, Array(
			"title" => $_POST['name'],
			"artist" => $_POST['artist'],
			"path" => $_POST['path']));
$songs_final = $songs;
}else if($_POST['action'] == "del"){
$songs_final = Array();
foreach($songs as $song){
	if($song['title'] != $_POST['name']){
		array_push($songs_final, $song);
	}
}
}
$write_string = "<songs>";
foreach($songs_final as $song){
$write_string .= "<song title=\"$song[title]\" artist=\"$song[artist]\" path=\"$song[path]\" />";
}
$write_string .= "</songs>";
$fp = fopen("playlist.xml", "w+");
fwrite($fp, $write_string) or die("Error writing to file");
fclose($fp);
print "<em>Song inserted or deleted successfully </em><br />";
print "<a href=\"index.php\" title=\"return\">Return</a>";
?>

index.php

<head>
<title>Add Songs</title>
<style type="text/css">
table {
border:1px dotted #ccc;
width:100%;
}
td {
	background-color:#aaa;
color:#fff;
}
fieldset { border:0; }
label { margin-right:5px; }

</style>
</head>
<body>
<form action="processForm.php" method="post">
<fieldset>
<label for="name">Name:</label> <input type="text" id="name" name="name"/><br />
<label for="artist">Artist:</label><input type="text" id="artist" name="artist" /><br />
<label for="path">Path:</label> <input type="text" id="path" name="path" /> <br />
<select name="action">
<option value="ins">Insert</option>
<option value="del">Delete</option>
</select>
<input type="submit" />
</fieldset>
</form>
<p>Current entries:</p>
<?php
function start_tag($parser, $name, $attrs){
global $table_string;
$table_string .= "<tr><td>$attrs[title]</td><td>$attrs[artist]</td><td>$attrs[path]</td></tr>";
}
function end_tag($parser, $name){}
$parser = xml_parser_create();
xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
xml_set_element_handler($parser, "start_tag", "end_tag");
$table_string = "<table>
	<tr><th>Title</th><th>Artist</th><th>Path</th></tr>";
xml_parse($parser, file_get_contents("playlist.xml")) or die("Error parsing XML file");
$table_string .= "</table>";
echo $table_string;

?>
</body>
</html>

playlist.xml (example of the structure)

<songs><song title="On Mercury" artist="Red Hot Chili Peppers" path="/red-hot-chili-peppers/on-mercury.mp3" /><song title="Universally Speaking" artist="Red Hot Chili Peppers" path="	/red-hot-chili-peppers/universally-speaking.mp3" /></songs>

Liu · June 13, 2011

Any kind of hint, how to do it, would be aprecciated too.

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Modify Script for XML Files

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