[RESOLVED] Validate mp3 url input

[swissmissflash]

Hi all,

I was hoping one of you might be so kind as to help me find a better validating solution for checking user input of valid mp3 files.

Here is what i am currently using:

				//function to check mp3
				function filecheck($entry){
					$ext = strrchr($entry,'.');
					$FileType = array (".mp3",".MP3");
					if ( in_array ($ext, $FileType) ){
						return TRUE;
					} else {
						return FALSE;
					}
				}

I know regex would be a better solution and I have tried to create one but having trouble creating one that properly validates all possible url's. Mainly I would like to check for "Http://" and ".mp3"

Thanks in advance!

[Installer]

This in no way checks for "valid mp3 files" (something way beyond regular expressions and string functions would be needed for that) or even for a valid url, but it does satisfy your other request ('...to check for "Http://" and ".mp3"'):

function filecheck($entry)
{ 
    $prot = strtolower(substr($entry, 0, 7));
    $ext = strtolower(strrchr($entry, '.')); 
    if (($prot == 'http://') && ($ext == '.mp3')) { 
        return true; 
    } else { 
        return false; 
    } 
}

I don't know why "regex would be a better solution" for such a simple task.

[swissmissflash]

Installer,

You're absolutely right... thanks for the reply. That helps a lot, thank you. I should have been more clear with why I was asking about regex.

If someone enters a url and has some characters or letters beyond the ".mp3" string on accident it would still validate even though its incorrect. I would like to make sure the structure of the url contains those two elements but also catches any user errors. Sometimes people copy things like or whatever and I don't want that to be a valid url.

I really appreciate your help. Could you or someone else help me find a good way to validate that situation?

Thank you

[Installer]

The function will check for "http://" at the very beginning of the string and ".mp3" at the very end, so you're covered for those two. As for checking the validity of a complete url, you might find a regular expression for that at a site such as this one, or you could use parse_url() and check each member of the array for presence or absence, as desired, and for correctness otherwise (e.g. all alphanumeric plus dots, dashes, etc, and a legit tld).

Or search these forums; there's a good chance it's already been done here. 🙂

[swissmissflash]

Installer,

Thank you so much again for the information. 🙂 I searched the forum and didnt come up with much... is this something you're familiar with? I would be willing to paypal you some money for your time if you could help me further.

Thanks

[Installer]

A friendly reminder: I believe it's against forum rules to offer payment.

This function might serve your needs:

function validate_mp3_uri($str)
{
    $regex = '^(ht|f)tp(s?)\:\/\/[a-zA-Z0-9\-\._]+(\.[a-zA-Z0-9\-\._]'
           . '+){2,}(\/?)([a-zA-Z0-9\-\.\?\,\'\/\\\+&%\$#_]*)?$';
    if (!ereg($regex, $str) || (strtolower(substr($str, -4)) != '.mp3')) {
        return false;
    } else {
        return true;
    }
}

$str_arr = array('http://www.example.com/somefile.mp3',
                 "[url='http://www.example.com/somefile.mp3']",
                 'ftp://www.example.com/test.mp3',
                 'http://example.com.mp3?test=test');
foreach ($str_arr as $each_str) {
$result = validate_mp3_uri($each_str);
    if ($result) {
        echo $each_str . ' - Good<br />';
    } else {
        echo $each_str . ' - Bad<br />';
    }
}

The regular expression was found at the site I linked to earlier.

[swissmissflash]

Installer! thank you so much! Sorry I didn't realize that was against the rules. :p

You're the best! I really appreciate it!