Using PHP to Edit An RSS Entry

[TBrass84]

I want to edit an xml using PHP and POST from iOS app. The XML Looks like:

<?xml version="1.0" encoding="UTF-8"?>
<rss xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0">
<channel>
<atom:link rel="self" type="application/rss+xml" href="http://www.316apps.site90.net/Test.xml"/>
<lastBuildDate>Mon, 3 Feb 2014 09:26:14 -0500</lastBuildDate>
<title>Prayer Warrior</title>
<description><![CDATA[Prayer Warrior]]></description>
<link>http://www.316apps.site90.net</link>
<language>en</language>
<copyright>2014 Prayer Warrior</copyright>
<item>
<first_name>John</first_name>
<last_name>Doe</last_name>
<title>I need money</title>
<date>Mon, 3 Feb 2014 09:26:14 -0500</date>
<anonymous>No</anonymous>
<prayer_warriors>1</prayer_warriors>
<location>USA</location>
</item> 
<item>
<first_name>Jane</first_name>
<last_name>Doe</last_name>
<title>I need money</title>
<date>Tue, 4 Feb 2014 09:26:14 -0500</date>
<anonymous>No</anonymous>
<prayer_warriors>1</prayer_warriors>
<location>USA</location>
</item> 
</channel>
</rss>

Over time, the XML will grow. In my iOS app I have a UITableView that parses the XML into different rows. When they view a row, I want it to increase the count on the prayer.  PHP I am using now is:

 

<?php
$first_name = $_POST['first_name'];
 $last_name = $_POST['last_name'];
 $title = $_POST['title'];


$xml = simplexml_load_file("http://www.316apps.site90.net/Test.xml") or die("Not loaded!\n");




$responses = $xml->xpath("//channel/item[title = $title and first_name = $first_name and last_name = $last_name]/prayer_warriors");
$responses[0][0] = $responses[0] + 1;
print_r($responses);
$xml->asXML("Test.xml");    
?>

The iOS app uses this code for POST to it:

RSSEntry *entry = [_allEntries objectAtIndex:indexPath.row];

    NSString *myRequestString = [NSString stringWithFormat:@"first_name=%@&last_name=%@&title=%@", entry.firstName, entry.lastName, entry.prayerRequest];
    
    // Create Data from request
    NSData *myRequestData = [NSData dataWithBytes: [myRequestString UTF8String] length: [myRequestString length]];
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL: [NSURL URLWithString: @"http://www.316apps.site90.net/Increase.php"]];
    // set Request Type
    [request setHTTPMethod: @"POST"];
    // Set content-type
    [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"content-type"];
    // Set Request Body
    [request setHTTPBody: myRequestData];
    // Now send a request and get Response
    NSData *returnData = [NSURLConnection sendSynchronousRequest: request returningResponse: nil error: nil];
    // Log Response
    NSString *response = [[NSString alloc] initWithBytes:[returnData bytes] length:[returnData length] encoding:NSUTF8StringEncoding];
    NSLog(@"Response%@",response);

However, nothing changes, and I get an invalid predicate message on the response on my iPhone for the line:

 

 

$responses = $xml->xpath("//channel/item[title = $title and first_name = $first_name and last_name = $last_name]/prayer_warriors");

Thoughts?

 

 

[TBrass84]

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