Convert a string into an URL safe address

November 18, 2011 - 12:28pm - by admin

/**

  * Convert a string into a url safe address.

  *

  * @param string $unformatted

  * @return string

  */

 public function formatURL($unformatted) {

 

     $url = strtolower(trim($unformatted));

 

     //replace accent characters, forien languages

     $search = array('À', 'Á', 'Â', 'Ã', 'Ä', 'Å', 'Æ', 'Ç', 'È', 'É', 'Ê', 'Ë', 'Ì', 'Í', 'Î', 'Ï', 'Ð', 'Ñ', 'Ò', 'Ó', 'Ô', 'Õ', 'Ö', 'Ø', 'Ù', 'Ú', 'Û', 'Ü', 'Ý', 'ß', 'à', 'á', 'â', 'ã', 'ä', 'å', 'æ', 'ç', 'è', 'é', 'ê', 'ë', 'ì', 'í', 'î', 'ï', 'ñ', 'ò', 'ó', 'ô', 'õ', 'ö', 'ø', 'ù', 'ú', 'û', 'ü', 'ý', 'ÿ', 'Ā', 'ā', 'Ă', 'ă', 'Ą', 'ą', 'Ć', 'ć', 'Ĉ', 'ĉ', 'Ċ', 'ċ', 'Č', 'č', 'Ď', 'ď', 'Đ', 'đ', 'Ē', 'ē', 'Ĕ', 'ĕ', 'Ė', 'ė', 'Ę', 'ę', 'Ě', 'ě', 'Ĝ', 'ĝ', 'Ğ', 'ğ', 'Ġ', 'ġ', 'Ģ', 'ģ', 'Ĥ', 'ĥ', 'Ħ', 'ħ', 'Ĩ', 'ĩ', 'Ī', 'ī', 'Ĭ', 'ĭ', 'Į', 'į', 'İ', 'ı', 'IJ', 'ij', 'Ĵ', 'ĵ', 'Ķ', 'ķ', 'Ĺ', 'ĺ', 'Ļ', 'ļ', 'Ľ', 'ľ', 'Ŀ', 'ŀ', 'Ł', 'ł', 'Ń', 'ń', 'Ņ', 'ņ', 'Ň', 'ň', 'ʼn', 'Ō', 'ō', 'Ŏ', 'ŏ', 'Ő', 'ő', 'Œ', 'œ', 'Ŕ', 'ŕ', 'Ŗ', 'ŗ', 'Ř', 'ř', 'Ś', 'ś', 'Ŝ', 'ŝ', 'Ş', 'ş', 'Š', 'š', 'Ţ', 'ţ', 'Ť', 'ť', 'Ŧ', 'ŧ', 'Ũ', 'ũ', 'Ū', 'ū', 'Ŭ', 'ŭ', 'Ů', 'ů', 'Ű', 'ű', 'Ų', 'ų', 'Ŵ', 'ŵ', 'Ŷ', 'ŷ', 'Ÿ', 'Ź', 'ź', 'Ż', 'ż', 'Ž', 'ž', 'ſ', 'ƒ', 'Ơ', 'ơ', 'Ư', 'ư', 'Ǎ', 'ǎ', 'Ǐ', 'ǐ', 'Ǒ', 'ǒ', 'Ǔ', 'ǔ', 'Ǖ', 'ǖ', 'Ǘ', 'ǘ', 'Ǚ', 'ǚ', 'Ǜ', 'ǜ', 'Ǻ', 'ǻ', 'Ǽ', 'ǽ', 'Ǿ', 'ǿ'); 

     $replace = array('A', 'A', 'A', 'A', 'A', 'A', 'AE', 'C', 'E', 'E', 'E', 'E', 'I', 'I', 'I', 'I', 'D', 'N', 'O', 'O', 'O', 'O', 'O', 'O', 'U', 'U', 'U', 'U', 'Y', 's', 'a', 'a', 'a', 'a', 'a', 'a', 'ae', 'c', 'e', 'e', 'e', 'e', 'i', 'i', 'i', 'i', 'n', 'o', 'o', 'o', 'o', 'o', 'o', 'u', 'u', 'u', 'u', 'y', 'y', 'A', 'a', 'A', 'a', 'A', 'a', 'C', 'c', 'C', 'c', 'C', 'c', 'C', 'c', 'D', 'd', 'D', 'd', 'E', 'e', 'E', 'e', 'E', 'e', 'E', 'e', 'E', 'e', 'G', 'g', 'G', 'g', 'G', 'g', 'G', 'g', 'H', 'h', 'H', 'h', 'I', 'i', 'I', 'i', 'I', 'i', 'I', 'i', 'I', 'i', 'IJ', 'ij', 'J', 'j', 'K', 'k', 'L', 'l', 'L', 'l', 'L', 'l', 'L', 'l', 'l', 'l', 'N', 'n', 'N', 'n', 'N', 'n', 'n', 'O', 'o', 'O', 'o', 'O', 'o', 'OE', 'oe', 'R', 'r', 'R', 'r', 'R', 'r', 'S', 's', 'S', 's', 'S', 's', 'S', 's', 'T', 't', 'T', 't', 'T', 't', 'U', 'u', 'U', 'u', 'U', 'u', 'U', 'u', 'U', 'u', 'U', 'u', 'W', 'w', 'Y', 'y', 'Y', 'Z', 'z', 'Z', 'z', 'Z', 'z', 's', 'f', 'O', 'o', 'U', 'u', 'A', 'a', 'I', 'i', 'O', 'o', 'U', 'u', 'U', 'u', 'U', 'u', 'U', 'u', 'U', 'u', 'A', 'a', 'AE', 'ae', 'O', 'o');

     $url = str_replace($search, $replace, $url);

 

     //replace common characters

     $search = array('&', '£', '$');

     $replace = array('and', 'pounds', 'dollars');

     $url= str_replace($search, $replace, $url);

 

     // remove - for spaces and union characters

     $find = array(' ', '&', '\r\n', '\n', '+', ',', '//');

     $url = str_replace($find, '-', $url);

 

     //delete and replace rest of special chars

     $find = array('/[^a-z0-9\-<>]/', '/[\-]+/', '/<[^>]*>/');

     $replace = array('', '-', '');

     $uri = preg_replace($find, $replace, $url);

 

     return $uri;

 }

Voila !

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Scanning for Viruses Using PHP and ClamAV

November 16, 2011 - 2:47pm - by admin

Here what I found and like most.

PHP Code for directory scanning:

    // Set the allowed types for reading and upload. 

    $types = array ('jpg', 'jpeg', 'txt'); 

     

    // Start a variable. 

    $dir_files = array(); 

     

    // If it is a directory add all the files. 

    if (is_dir ($dir)) { 

        // Open the directory. 

        if ($handle = opendir($dir)) { 

            // Read the file names of all the files available. 

            while (false !== ($file = readdir($handle))) { 

                // Make sure the file is not this directory or its parent and not the .DS_Store file. 

                if ($file != "." && $file != ".." && $file != '.DS_Store') { 

                    // Get the file parts. 

                    $file_parts  = pathinfo($file); 

                    // Make sure the extension is allowed. 

                    if (in_array(strtolower ($file_parts['extension']),$types)) { 

                        // Add the file to the array. 

                        $dir_files[] = array ('original_name'=>$file, 'type'=>$file_parts['extension']); 

                    } 

                } 

            } 

            // Close the handle. 

            closedir ($handle); 

        } 

    } 



    // If any files exist in the upload directory check them for viruses. 

    if (count ($dir_files) > 0) { 

        // Get the dir and prepare it for the command line. 

        $real_path = realpath ($dir); 

        $safe_path = escapeshellarg($real_path); 

        // Set the variables for the cmd. 

        $return = -1; 

        $out =''; 

        $cmd = '/usr/local/clamXav/bin/clamscan ' . $safe_path; 

        // Execute the cmd. 

        exec ($cmd, $out, $return); 

        // If a virus is found loop through each of the files and delete the virus, write the user a message, and add them to a db table. 

        if ($return != 0) { 

            // Loop through the files. 

            foreach ($dir_files as $k=>$v) { 

                // Get the dir and prepare it for the command line. 

                $real_path = realpath ($dir . $v['original_name']); 

                $safe_path = escapeshellarg($real_path); 

                // Reset the values. 

                $return = -1; 

                $out =''; 

                $cmd = '/usr/local/clamXav/bin/clamscan ' . $safe_path; 

                // Execute the command. 

                exec ($cmd, $out, $return); 

                // If the file is clean do nothing. 

                if ($return == 0){} 

                // If the file contains a virus remove it and add a note to the db. 

                else if ($return == 1) { 

                    // Delete the file. 

                    unlink ($dir . $v['original_name']); 

                    // Unset the file from the records. 

                    unset ($dir_files[$k]); 

                    // Notify the user. 

                    $message .= "The file {$v['original_name']} contained a known virus.  It has been deleted from the server.<br />"; 

                    $message_class = 'error'; 

                    // Add the user who uploaded the file to the db and a time and date. 

                    // Query the db to record who uploaded the file, not necessary but fun info to have. 

                } 

                else { 

                    // Delete the file. 

                    unlink ($dir . $v['original_name']); 

                    // Unset the file from the records. 

                    unset ($dir_files[$k]); 

                    // Notify the user. 

                    $message .= "The file {$v['original_name']} caused an unknown error and was removed from the server.<br />"; 

                    $message_class = 'minor_error'; 

                } 

            } 

        } 

    }

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PHP Get File Extension

November 15, 2011 - 1:36pm - by admin

Just some examples:

$filename = 'sample.gif';



// 1. The "explode/end" approach

$ext = end(explode('.', $filename));



// 2. The "strrchr" approach

$ext = substr(strrchr($filename, '.'), 1);



// 3. The "strrpos" approach

$ext = substr($filename, strrpos($filename, '.') + 1);



// 4. The "preg_replace" approach

$ext = preg_replace('/^.*\.([^.]+)$/D', '$1', $filename);



// 5. The "never use this" approach

//   From: http://php.about.com/od/finishedphp1/qt/file_ext_PHP.htm

$exts = split("[/\\.]", $filename);

$n = count($exts)-1;

$ext = $exts[$n];

And the last but not the least:

$path_parts = pathinfo('/www/htdocs/inc/lib.inc.php');

echo $path_parts['dirname'], "\n";

echo $path_parts['basename'], "\n";

echo $path_parts['extension'], "\n";

echo $path_parts['filename'], "\n"; // since PHP 5.2.0

output:

/www/htdocs/inc

lib.inc.php

php

lib.inc

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PHP: explode() or split()?

November 15, 2011 - 9:33am - by admin

Actually explode() isn’t the same as split().

The biggest difference is that explode() takes in parameters a delimiter to split by, while split() takes a regular expression. This means that explode() runs faster. And even more, the PHP documentation says that preg_split() is faster than split(), so really there isn’t much of a reason to use split() at all.

split() is not an alias of explode() while join() is an alias of implode().

And finally:

split() function has been DEPRECATED as of PHP 5.3.0. Relying on this feature is highly discouraged.

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CSS Word-Wrap

November 11, 2011 - 3:20pm - by admin

This property specifies whether the current rendered line should break if the content exceeds the boundary of the specified rendering box for an element (this is similar in some ways to the ‘clip’ and ‘overflow’ properties in intent.) This property should only apply if the element has a visual rendering, is an inline element with explicit height/width, is absolutely positioned and/or is a block element.

 

Examples

div { word-wrap: break-word }  <div style=”word-wrap: break-word”>Here is some content for the div element</div>

 

Possible Values

Value	Description
normal	Content will exceed the boundaries of the specified rendering box.
break-word	Content will wrap to the next line when necessary, and a word-break will also occur if needed.

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jsFiddle

November 11, 2011 - 11:59am - by admin

JsFiddle is a playground for web developers, a tool which may be used in many ways. One can use it as an online editor for snippets build from HTML, CSS and JavaScript. The code can then be shared with others, embedded on a blog, etc. Using this approach, JavaScript developers can very easily isolate bugs.

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How do you select a particular option in a SELECT element in jQuery?

November 9, 2011 - 8:55am - by admin

$('#select').val('the_value');

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