[Extract a long group of strings]

This should do.

 

<?php

$data = "...";

preg_match("/(FREEBUSY;.*?)END:/is", $data, $match);
echo $match[1];

?>

 

Orio.

[[SOLVED] How to empty a directory]

Found my problem, I think.

 

Change this:

unlink($file);

 

Into:

unlink($dir."/".$file);

 

Orio.

[Automatically download a file?]

You didn't put that at your top of your script. You can't have output when downloading the file.

 

Orio.

[[SOLVED] How to empty a directory]

<?php

function empty_dir($dir); //$dir should NOT be passed with an ending "/".
{
$result = true;

$h = opendir($dir);
if($h === false)
	return false;
while($file = readdir($h))
{
	if($file == "." || $file == "..")
		continue;
	if(is_dir($file))
	{
		if(!empty_dir($dir."/".$file))
			$result = false;
		continue;
	}
	unlink($file); //Regular file..
}
closedir($dir);

return $result;
}

$dir = "/home/gscl/public_html/stk/temp";
if(!empty_dir($dir))
echo "An error occured. Some of the files weren't deleted.";
else
echo "Dir empty.";

?>

 

 

Haven't tested it, use at your own risk.

 

Orio.

[Automatically download a file?]

You script should start by checking if there should be a download. If so, update the database records and then force download the file. If a download was not requested, show the form.

 

<?php

if((isset($_POST['do']) && $_POST['do'] == "Download")
{
//Do the query that adds 1 to mysql

//Force download:
$filename = "...."; //Your filename....

// required for IE, otherwise Content-disposition is ignored
if(ini_get('zlib.output_compression'))
  ini_set('zlib.output_compression', 'Off');

// addition by Jorg Weske
$file_extension = strtolower(substr(strrchr($filename,"."),1));

switch( $file_extension )
{
  case "pdf": $ctype="application/pdf"; break;
  case "exe": $ctype="application/octet-stream"; break;
  case "zip": $ctype="application/zip"; break;
  case "doc": $ctype="application/msword"; break;
  case "xls": $ctype="application/vnd.ms-excel"; break;
  case "ppt": $ctype="application/vnd.ms-powerpoint"; break;
  case "gif": $ctype="image/gif"; break;
  case "png": $ctype="image/png"; break;
  case "jpeg":
  case "jpg": $ctype="image/jpg"; break;
  default: $ctype="application/force-download";
}
header("Pragma: public"); // required
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private",false); // required for certain browsers 
header("Content-Type: $ctype");
// change, added quotes to allow spaces in filenames, by Rajkumar Singh
header("Content-Disposition: attachment; filename=\"".basename($filename)."\";" );
header("Content-Transfer-Encoding: binary");
header("Content-Length: ".filesize($filename));
readfile("$filename");
exit();
}
else
{
//Show the form, the file doesn't need to be downloaded
}

?>

 

Credit for the force download code piece:

http://elouai.com/force-download.php

 

 

Orio.

[Testing php code before posting on web server]

Sure, go for it.

 

Orio.

[Testing php code before posting on web server]

I'd upload it to a folder with an obscure name, htaccess it so only you can access it (user/pass) and then test it there.

I think it's better doing that rather than testing it locally because this way you are testing it with all of your server's settings, so there will be no surprises when you move it for live use.

 

Orio.

[PHP Includes]

You want to display the image, right? For that you simply need to use the <img> tag, with out includes:

 

echo "<img src=\"{$filename}\">";

 

Orio.

[Enabling users to submit articles by email]

That's possible, but that would be a bit difficult. It's much easier having a form in your site letting your users submit articles. Why via email?

 

Orio.

[PHP Includes]

You can, but that will just print out the image contents, as if you opened it with notepad or such (it won't display it).

What exactly are you trying to achieve?

 

Orio.

[Need to Read Photoshop Metadata with PHP]

Take a look into PHP's EXIF library.

 

Orio.

[Form with SQL]

I think your problem is in your second if() (in registration.php):

 

if($row|| ...)

//Should become

if(!$row || ...)

 

 

Orio.

[[PHP] tags]

Color coding without having to add start/end php tags is nice

 

 

Certainly is. Good job.

 

Orio.

[Coding Style]

I also use:

 

<?php

if (hours < 24 && minutes < 60 && seconds < 60)
{
return true;
}
else
{
return false;
}

?>

 

 

But only when the block contains more than one line.

For an example, I do:

 

<?php

for($i = 0; $i < 7; $i++)
if($i % 2 == 0)
	echo $i."<br>";

//And

while($i < 7)
{
if($i % 2 == 0)
	echo $i."<br>";
$i++;
}

?>

 

 

Orio.

[[SOLVED] Image Retreival]

Try this:

 

<?php

function random_file ($dirname)
{
if(!is_dir($dirname))
	return false;
if(!$h = opendir($dirname))
	return false;

$files = array();
while($file = readdir($h) !== FALSE)
	if(!is_dir($file))
		$files[] = $file;

return $files[array_rand($files)];
}


$dir = "/frontpage/";
$img = random_file($dir);
if($img !== false)
echo "<img src=".$img." />" . filetype($dir.$img) . "\n";

?>

 

 

Orio.

[Stringy thingies.]

After the sorts you can just compare the arrays

 

I wasn't too sure how fast str_split() is, so I thought using str_split() only once and then looping over the characters would be faster.

But I guess that should be tested.

 

Orio.

[[SOLVED] Image Retreival]

You want to display a random image from that folder?

 

<?php

$dir = "/frontpage/";

$files = scandir($dir); //Note, PHP5+
$rand = rand() % (count($files) - 2) + 2;
echo "<img src=".$files[$rand]." />" . filetype($dir . $file[$rand]) . "\n";

?>

 

Orio.

[Stringy thingies.]

<?php

function is_scrambled ($scrambled, $unscrambled)
{
if(strlen($scrambled) != strlen($unscrambled))
	return false;

$letters = str_split($scrambled);
$num_letters = count($letters);
sort($letters);
for($i = 0; $i < $num_letters; $i++)
	if($letters[$i] != $unscrambled[$i])
		return false;
return true;
}

?>

 

 

Orio.

[[SOLVED] An easier way?]

I think this should be enough:

 

<?php

$res = array('M'=>31, 'Y'=>1, 'D'=>365);
asort($res);
reset($res);

echo key($res).": ".current($res)."<br>";

?>

 

Orio.

[How did YOU learn to program PHP?]

I learned from tutorials....  Once I got the basic syntax, I just kept googling and checking php.net references....

 

Then again, some aspects of my knowledge I hate.  For example, I hate that I suck at OOP (getting better though!), and I don't know many code designs....  Had I read a book or something, I probably would've been atleast introduced to that....

 

Pretty much the same..

I new basic C when I started learning PHP. But all my learning was (and is) from the web, a lot of trial and error.

But as I am not a professional PHP coder, there are a lot of things I still don't know. OOP as an example.

 

Always learning more though..

Orio.

[[SOLVED] Searching a String]

Do you want to know if this variable contains that certain substring? Do you want to know where? Do you want the text around it?

 

I assume you only need to check whether $email_comments contains "processed successfully". This is done (in the most simple way) like that:

 

<?php

$email_comments = "...text...processed successfully...text...";

if(strpos($email_cmments, "processed successfully") !== FALSE)
echo "It was processed successfully";
else
echo "It wasn't processed successfully";

?>

 

Orio.

[Module help out!]

It''s a variable. From the given piece of code I can't tell you much more..

 

Orio.

[Determine Browser]

Or simply...

 

<?php

$browser = get_browser(null, true);
echo "You are using {$browser['browser']} version {$browser['version']}";

?>

 

 

Orio.

[[SOLVED] cURL partial download variable range]

Your code doesn't work because this is what PHP understands from you:

 

$extra = 40000;
$range = $extra-(250000+$extra); // = 40000-(250000+40000) = 250000

 

PHP thinks, as it should, that the expression you stated above is a mathematical expression. 250000 is passed as the third parameter. You need to clarify you are dealing with strings here.

This should solve your problem:

 

$extra = 40000;
curl_setopt($conn[$i],CURLOPT_RANGE, $extra."-".(250000+$extra));

 

 

Orio.

[Determine Browser]

Take a look into get_browser().

See the example over there, it explains the best.

 

Orio.