iOS应用程序导致内部服务器错误

我遇到了一个非常奇怪的问题。我的应用程序导致我的服务器疯狂。

我的iOS应用程序使用tfhple来解析服务器上php页面的数据。它从页面上抓取一个名称，并检查该活动还剩多少时间。

 NSString *URL1 = @"http://alefdev.com/tzedakah/current.php";
NSData *webPage = [NSData dataWithContentsOfURL:[NSURL URLWithString:[NSString stringWithFormat: URL1]]];  
TFHpple *xpathParser = [[TFHpple alloc] initWithHTMLData:webPage];    
NSArray *elements = [xpathParser search:@"//name"];  
if([elements count] == 0)
{
    NSLog(@"array is empty");
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Connection Error" message:@"Cannot connect to server." 
                                                   delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
    [alert show];
    [alert release];
    [adupdate invalidate];
    rc.enabled = YES;
    rc.hidden = NO;
}
else{
    TFHppleElement *element = [elements objectAtIndex:0];
    NSString *ttl = [element content];
    NSLog(@"Charity Name:  %@", ttl); 
    todayscharity.text = ttl;

}    

每隔10秒，它调用服务器，获取所需的信息，并将其放入数组中。如果数组为空，则定时器无效，并出现"Reconnect"按钮。"重新连接"按钮重新启动计时器。

计时器:

-(void)starttimer{
adupdate = [NSTimer scheduledTimerWithTimeInterval:(10.0) target:self      selector:@selector(updateAd) userInfo:nil repeats:YES];
NSLog(@"starttimer called");}

重启功能

- (IBAction)reconnect:(id)sender
{
[self starttimer];
}

如果它失败(空数组)，然后重新启动，它再次尝试从我的服务器抓取信息，但不能。整个站点给出一个内部服务器错误(500)。

php脚本获取当前日期

$today = getdate();
$todayfull = $today['year'].$today['mon'].$today['mday'];

查看日期:

if(($todayfull == 201192)||($todayfull == 201193))

然后回显一些文本并在匹配日期后运行倒计时功能。

function countdown($year, $month, $day, $hour, $minute)
{
$the_countdown_date = mktime($hour, $minute, 0, $month, $day, $year, -1);
$today = time();
$difference = $the_countdown_date - $today;
if ($difference < 0) $difference = 0;
$days_left = floor($difference/60/60/24);
$hours_left = floor(($difference - $days_left*60*60*24)/60/60);
$minutes_left = floor(($difference - $days_left*60*60*24 - $hours_left*60*60)/60);
if($minutes_left < 1)
{
echo "<ends>Less than 1 minute</ends>";
}
else{
echo "<ends>".$days_left." day ".$hours_left." hours ".$minutes_left." minutes</ends>";
}

Error Logs show:

[Sun Sep  4 14:01:53 2011] [error] [client 184.100.79.143] File does not exist: /home/alefdev2/public_html/error_500.htm
[Sun Sep  4 14:01:53 2011] [error] [client 184.100.79.143] Premature end of script headers: /home/alefdev2/public_html/tzedakah/current.php
[Sun Sep  4 14:01:43 2011] [error] [client 184.100.79.143] File does not exist: /home/alefdev2/public_html/error_500.htm
[Sun Sep  4 14:01:43 2011] [error] [client 184.100.79.143] Premature end of script headers: /home/alefdev2/public_html/tzedakah/current.php
[Sun Sep  4 14:01:43 2011] [error] [client 184.100.79.143] File does not exist: /home/alefdev2/public_html/error_500.htm
[Sun Sep  4 14:01:43 2011] [error] [client 184.100.79.143] Premature end of script headers: /home/alefdev2/public_html/tzedakah/current.php
[Sun Sep  4 14:00:25 2011] [error] [client 184.100.79.143] File does not exist: /home/alefdev2/public_html/error_500.htm

完整的php脚本如下:

    <?php
$today = getdate();
$todayfull = $today['year'].$today['mon'].$today['mday'];
echo "Todayfull: $todayfull";
if(($todayfull == 201192)||($todayfull == 201193))
{
echo "<name>The Lone Soldier Center in memory of Michael Levin</name>
<description>Lone Soldier Center desc.</description>    
";
countdown(2011,9,4,0,0);
}
else if(($todayfull == 201194)||($todayfull == 201195)){
echo "<name>Friends of Itamar</name>
<description>Friends of Itamar desc.</description>  
";
countdown(2011,9,6,0,0);
}
else{
echo "Error:  Could not match dates.";
}
?>
<?php
function countdown($year, $month, $day, $hour, $minute)
{
$the_countdown_date = mktime($hour, $minute, 0, $month, $day, $year, -1);
$today = time();
$difference = $the_countdown_date - $today;
if ($difference < 0) $difference = 0;
$days_left = floor($difference/60/60/24);
$hours_left = floor(($difference - $days_left*60*60*24)/60/60);
$minutes_left = floor(($difference - $days_left*60*60*24 - $hours_left*60*60)/60);
if($minutes_left < 1)
{
echo "<ends>Less than 1 minute</ends>";
}
else{
echo "<ends>".$days_left." day ".$hours_left." hours ".$minutes_left." minutes</ends>";
}
}
?>

我的主机(SiteGround)说我只是有太多的IMAP进程在运行，但只有当我试图通过这个应用程序重新连接时，网站才会崩溃。