PHP - Help With Simplexml_load_file When File Doesn't Exist

I'm trying to do a simple image upload. It works fine on my local server but i'm moving all my files to my production server and some files i attempt to upload, via an html form, don't register. The $_FILES variable doesn't exist sometimes. I think its because of the file size but i'm not sure.

The form has two inputs: "title" and "userfile". I can put something in the title and attempt to upload a small excel file and both $_POST and $_FILES exist but if i do a larger image file both $_POST and $_FILES don't even get set.

I did an "echo ini_get('post_max_size');" and i get "8M". The image i'm attempting to upload is only 0.34M so i should be good there.

I've replaced the actual upload script with this, which is how i found out the variables only get set sometimes


Any suggestions would be much appreciated.
Code: [Select]
<?php
  echo "Upload: " . $_FILES["userfile"]["name"] . "<br />";
  echo "Type: " . $_FILES["userfile"]["type"] . "<br />";
  echo "Size: " . ($_FILES["userfile"]["size"] / 1024) . " Kb<br />";
  echo "Stored in: " . $_FILES["userfile"]["tmp_name"];

echo "<hr><pre>";
print_r($_POST);
echo "</pre><hr>";

echo "<pre>";
print_r($_FILES);
echo "</pre>";

And how can I make it so if it does already exist, it doesn't over-write information already in it?

Thanks

*delurk! It had to happen sooner or later!*

OK, I am totally and utterly stumped. I have this script:

$this->clear_cache ($this->cache_dir, $this->cache_time);

if ($this->cache_time > 0) {
$current_page = $_SERVER ['REQUEST_URI'];
$current_page_encoded = base64_encode($current_page);
$current_page_path = $this->cache_dir . $current_page_encoded;

 if (file_exists($current_page_path)) { // see if there is still a file with the name of the current request URI after cache cleared
                $content = file_get_contents ($current_page_path);

return $content;
                } 
         }

Basically, it is for checking if there is a cached version of the page before running the rest of the script, using the REQUEST_URI as the identifier. So it calls a function to clear the cache, which works fine (and I've tried just deleting the cache files manually anyway).

Then it checks if we are even caching, i.e. if cache time is greater than 0. Then it uses the BASE64-encoded REQUEST_URI (under which name the file would have been cached previously) to check if a file with that name still exists in the cache dir, and if so loads it. Now, this works perfectly with a url like:

mysite/myscript/mysubpage

But when the page has parameters, like:

mysite/myscript/mysubpage?search=widgets

the file_exists function returns TRUE, even though the directory is empty. I did do a clearstatcache(); but it made no difference and anyway, it wouldn't explain why the URI with query string would fail while the regular one would not. And even if something is wrong with my code elsewhere, the fact is it is returning TRUE for a non-existent file.

Can someone prevent my slide into insanity?!

Here is my code so far (I say it's PDO but it pretty much isn't. What is the object here? The database connection? LOL!);
 

$sql = 
	"
	SELECT 
	SUM(IF(`sent` != 'N' , 1 , 0 )) as 'Emails Sent',	
	SUM(IF(`completed` NOT IN('N','paper') , 1 , 0 )) as 'Completed Electronically', 	
	SUM(IF(`completed` = 'paper' , 1 , 0 )) as 'Completed Manually', 
	SUM(IF(`completed` != 'N' , 1 , 0 )) as 'Total Number Completed',
	SUM(IF(`remindercount` = '1' , 1 , 0 )) as 'Reminder Sent Once',
	SUM(IF(`remindercount` = '2' , 1 , 0 )) as 'Reminder Sent Twice',
	SUM(IF(`remindercount` = '3' , 1 , 0 )) as 'Reminder Sent Thrice'
	FROM `tokens_$survey_id`
	";
				
$statement = $dbh->prepare($sql);
$statement->execute();

$result = $statement->fetch(PDO::FETCH_OBJ);
				
foreach($result as $key => $value) {
	 echo "<tr>
		<td>$key</td>
		<td>$value</td>
	       </tr>";
}

This is all well and good if the tokens_$survey_id table is actually there. Sometimes, for a genuine reason, there won't be a tokens table for that particular survey. How do I account for this? At the moment I get an error..
 

Warning: Invalid argument supplied for foreach() in /var/www/html/index.php on line 149 

I tried this but I am not satisfied this is correct;
 

if(!$result) {
die();
}

I don't want the code to die! If I take out the die() statement then this if is ignored for some reason I don't understand.

Hello fellow developers,

Let me start by saying I'm still a PHP noob so please don't go too hard on me if I my code reflects this noobishness...

So I'm trying to build a (very) simple RSS reader using jQuery and PHP. When the user clicks on an option from a dropdown, an AJAX call is made and passes the url selected from the list to a PHP script.

The PHP script then loads the appropriate xml file from an 'xmlcache' folder. Everything is working just fine for files named as such:

somefilename_1231231231.xml

The problem is that I need it to be able to load files which have been urlencoded such as:

http%3A%2F%2Ffeeds.feedburner.com%2Fajaxian_1235523548

In case you're wondering, the numbers at the end are a timestamp which will determine if the reader will load a cached copy of the desired xml file (if it's less than an hour old) or if it needs to get a fresh version (this part of the code is not written yet). Here is a look at my script thus far:

<?php

$url = "./xmlcache/" . urlencode($_REQUEST['url']); //access url from AJAX call
echo $url; //outputs -> "./xmlcache/http%3A%2F%2Ffeeds.feedburner.com%2Fajaxian_1235523548.xml", which is the same as the file's name
$curTime = time();
$urlParts = explode('_', $url);
$urlTime = intval($urlParts[1]);
$diff = $curTime - $urlTime;
$urlAge = 60 * 60; //60sec * 60min = 3600sec or 1 hour

if(file_exists($url)){
        if($diff > $urlAge){ //the > will be switched to < to make logical sense once testing is done.
                $xml = simplexml_load_file($url);
               
                //ROOT TAG
                foreach($xml as $key0 => $value){
                        echo "$key0: $value";
                        foreach($value->attributes() as $attributeskey0 => $attributesvalue1){
                        echo "$attributeskey0: $attributesvalue1";
                        }
                        echo "<br />";
                       
                        //1 LEVEL BELOW ROOT TAG
                        foreach($value as $key => $value2){
                                echo "$key: $value2";
                                foreach($value2->attributes() as $attributeskey => $attributesvalue2){
                                        echo "$attributeskey = $attributesvalue2";
                                }
                                echo '<br />';
                               
                                //2 LEVELS BELOW ROOT TAG
                                foreach($value2 as $key2 => $value3){
                                        echo "$key2: $value3";
                                        foreach($value3->attributes() as $attributeskey2 => $attributesvalue3){
                                                echo "$attributeskey2 = $attributesvalue3";
                                        }
                                        echo '<br />';
                                        //3 LEVELS BELOW ROOT TAG
                                        foreach($value3 as $key3 => $value4){
                                                echo "$key3: $value4";
                                                foreach($value4->attributes() as $attributeskey3 => $attributesvalue4){
                                                echo "$attributeskey3 = $attributesvalue4";
                                                }
                                                echo '<br />';
                                                //4 LEVELS BELOW ROOT TAG
                                                foreach($value4 as $key4 => $value5){
                                                        echo "$key4: $value5";
                                                        foreach($value5->attributes() as $attributeskey4 => $attributesvalue5){
                                                                echo "$attributeskey4 = $attributesvalue5";
                                                        }
                                                        echo '<br />';
                                                        //5 LEVELS BELOW ROOT TAG
                                                        foreach($value5 as $key5 => $value6){
                                                                echo "$key5: $value6";
                                                                foreach($value6->attributes() as $attributeskey5 => $attributesvalue6){
                                                                        echo "$attributeskey5 = $attributesvalue6";
                                                                }
                                                                echo '<br />';
                                                        }
                                                }
                                        }
                                }
                                echo '<br />';
                        }
                        echo '<br />';
                }

        }else{
                //need to create the XML file from scratch, do a curl function, or read from a text file
                echo "need a new version";
                //@unlink("$url);
        }
       
}else{
        echo "That file does not exist.<br/>";
}

?>

The error message I'm getting is this:


Warning: simplexml_load_file() [function.simplexml-load-file]: I/O warning : failed to load external entity "./xmlcache/http%3A%2F%2Ffeeds.feedburner.com%2Fajaxian_1235523548.xml" in C:\wamp\www\reader\loadfeed.php on line 13

Warning: Invalid argument supplied for foreach() in C:\wamp\www\reader\loadfeed.php on line 16


The second error is obviously thrown because the file doesn't get loaded.

I appreciate any help you gurus have to offer, and if you have any suggestions for the best way to load a fresh version that will be handled by the first else statement, I'm all ears.

Thanks guys!