46 useful PHP code snippets (2)

46 useful PHP code snippets (2)

16. decompress the file [code] php code:

function unzip($location,$newLocation){        if(exec("unzip $location",$arr)){            mkdir($newLocation);            for($i = 1;$i< count($arr);$i++){                $file = trim(preg_replace("~inflating: ~","",$arr[$i]));                copy($location.'/'.$file,$newLocation.'/'.$file);                unlink($location.'/'.$file);            }            return TRUE;        }else{            return FALSE;        }}

Syntax:

Unzip('test.zip ', 'unziped/test'); // File wocould be unzipped in unziped/test folder

?>

17. resize the image

[Code] php code:

function resize_image($filename, $tmpname, $xmax, $ymax)  {      $ext = explode(".", $filename);      $ext = $ext[count($ext)-1];         if($ext == "jpg" || $ext == "jpeg")          $im = imagecreatefromjpeg($tmpname);      elseif($ext == "png")          $im = imagecreatefrompng($tmpname);      elseif($ext == "gif")          $im = imagecreatefromgif($tmpname);             $x = imagesx($im);      $y = imagesy($im);             if($x <= $xmax && $y <= $ymax)          return $im;         if($x >= $y) {          $newx = $xmax;          $newy = $newx * $y / $x;      }      else {          $newy = $ymax;          $newx = $x / $y * $newy;      }             $im2 = imagecreatetruecolor($newx, $newy);      imagecopyresized($im2, $im, 0, 0, 0, 0, floor($newx), floor($newy), $x, $y);      return $im2;   }

18. use mail () to send an email

We previously provided PHP code snippets on how to use Mandrill to send emails. However, if you do not want to use third-party services, you can use the following PHP code snippets.

[Code] php code:

function send_mail($to,$subject,$body){$headers = "From: KOONK\r\n";$headers .= "Reply-To: blog@koonk.com\r\n";$headers .= "Return-Path: blog@koonk.com\r\n";$headers .= "X-Mailer: PHP5\n";$headers .= 'MIME-Version: 1.0' . "\n";$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";mail($to,$subject,$body,$headers);}

Syntax:

$ To = "admin@koonk.com ";

$ Subject = "This is a test mail ";

$ Body = "Hello World! ";

Send_mail ($ to, $ subject, $ body );

?>

19. convert seconds to days, hours, and minutes

[Code] php code:

function secsToStr($secs) {    if($secs>=86400){$days=floor($secs/86400);$secs=$secs%86400;$r=$days.' day';if($days<>1){$r.='s';}if($secs>0){$r.=', ';}}    if($secs>=3600){$hours=floor($secs/3600);$secs=$secs%3600;$r.=$hours.' hour';if($hours<>1){$r.='s';}if($secs>0){$r.=', ';}}    if($secs>=60){$minutes=floor($secs/60);$secs=$secs%60;$r.=$minutes.' minute';if($minutes<>1){$r.='s';}if($secs>0){$r.=', ';}}    $r.=$secs.' second';if($secs<>1){$r.='s';}    return $r;}

Syntax:

$ Secondds = "56789 ";

$ Output = secsToStr ($ seconds );

Echo $ output;

?>

20. database connection

21. Directory list

Use the following PHP code snippet to list all files and folders in a directory.

[Code] php code:

function list_files($dir){    if(is_dir($dir))    {        if($handle = opendir($dir))        {            while(($file = readdir($handle)) !== false)            {                if($file != "." && $file != ".." && $file != "Thumbs.db"/*pesky windows, images..*/)                {                    echo ''.$file.'
'."\n";                }            }            closedir($handle);        }    }}

Syntax:

List_files ("images/"); // This will list all files of images folder

?>

22. detect user languages

Use the following PHP code snippet to check the language used by your browser

[Code] php code:

function get_client_language($availableLanguages, $default='en'){    if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {        $langs=explode(',',$_SERVER['HTTP_ACCEPT_LANGUAGE']);        foreach ($langs as $value){            $choice=substr($value,0,2);            if(in_array($choice, $availableLanguages)){                return $choice;            }        }    }     return $default;}

23. View CSV files

[Code] php code:

function readCSV($csvFile){    $file_handle = fopen($csvFile, 'r');    while (!feof($file_handle) ) {        $line_of_text[] = fgetcsv($file_handle, 1024);    }    fclose($file_handle);    return $line_of_text;}

Syntax:

$ CsvFile = "test.csv ";

$ Csv = readCSV ($ csvFile );

$ A = csv [0] [0]; // This will get value of Column 1 & Row 1

?>

24. create a CSV file from PHP Data

[Code] php code:

function generateCsv($data, $delimiter = ',', $enclosure = '"') {   $handle = fopen('php://temp', 'r+');   foreach ($data as $line) {           fputcsv($handle, $line, $delimiter, $enclosure);   }   rewind($handle);   while (!feof($handle)) {           $contents .= fread($handle, 8192);   }   fclose($handle);   return $contents;}

Syntax:

$ Data [0] = "apple ";

$ Data [1] = "oranges ";

GenerateCsv ($ data, $ delimiter = ',', $ enclosure = '"');

?>

25. parse XML data

[Code] php code:

$xml_string="
 
     
          
   
    ben
           
   A    
      
          
   
    h2o
           
   K    
  
 ";  //load the xml string using Simplexml function$xml = simplexml_load_string($xml_string);  //loop through the each node of moleculeforeach ($xml->molecule as $record){   //attribute are accessted by   echo $record['name'], '  ';   //node are accessted by -> operator   echo $record->symbol, '  ';   echo $record->code, '
';}

26. parse JSON data

[Code] php code:

$json_string='{"id":1,"name":"rolf","country":"russia","office":["google","oracle"]} ';$obj=json_decode($json_string);//print the parsed dataecho $obj->name; //displays rolfecho $obj->office[0]; //displays google

27. get the URL of the current page

This PHP fragment can help you directly jump to the previous page after logging on to the user

[Code] php code:

function current_url(){$url = "http://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];$validURL = str_replace("&", "&", $url);return validURL;}

Syntax:

Echo "Currently you are on:". current_url ();

?>

28. Get the latest Tweet from any Twitter account

[Code] php code:

function my_twitter($username) {     $no_of_tweets = 1;     $feed = "http://search.twitter.com/search.atom?q=from:" . $username . "&rpp=" . $no_of_tweets;     $xml = simplexml_load_file($feed);    foreach($xml->children() as $child) {        foreach ($child as $value) {            if($value->getName() == "link") $link = $value['href'];            if($value->getName() == "content") {                $content = $value . "";        echo '
'.$content.'   
';            }            }    }    }

Syntax:

$ Handle = "koonktech ";

My_twitter ($ handle );

?>

29. number of forwards

Using this PHP fragment, you can check the number of forwarded URLs on your page.

[Code] php code:

function tweetCount($url) {    $content = file_get_contents("http://api.tweetmeme.com/url_info?url=".$url);    $element = new SimpleXmlElement($content);    $retweets = $element->story->url_count;    if($retweets){        return $retweets;    } else {        return 0;    }}

Syntax:

$ Url = "http://blog.koonk.com ";

$ Count = tweetCount ($ url );

Return $ count;

?>

30. calculate the difference between two dates

[Code] php code:

 diff($date2);echo "difference " . $interval->y . " years, " . $interval->m." months, ".$interval->d." days "; // shows the total amount of days (not pided into years, months and days like above)echo "difference " . $interval->days . " days ";-------------------------------------------------------- OR          /** * Calculate differences between two dates with precise semantics. Based on PHPs DateTime::diff() * implementation by Derick Rethans. Ported to PHP by Emil H, 2011-05-02. No rights reserved. *  * See here for original code: * http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/tm2unixtime.c?revision=302890&view=markup * http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/interval.c?revision=298973&view=markup */function _date_range_limit($start, $end, $adj, $a, $b, $result){    if ($result[$a] < $start) {        $result[$b] -= intval(($start - $result[$a] - 1) / $adj) + 1;        $result[$a] += $adj * intval(($start - $result[$a] - 1) / $adj + 1);    }    if ($result[$a] >= $end) {        $result[$b] += intval($result[$a] / $adj);        $result[$a] -= $adj * intval($result[$a] / $adj);    }    return $result;}function _date_range_limit_days($base, $result){    $days_in_month_leap = array(31, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);    $days_in_month = array(31, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);    _date_range_limit(1, 13, 12, "m", "y", &$base);    $year = $base["y"];    $month = $base["m"];    if (!$result["invert"]) {        while ($result["d"] < 0) {            $month--;            if ($month < 1) {                $month += 12;                $year--;            }            $leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);            $days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];            $result["d"] += $days;            $result["m"]--;        }    } else {        while ($result["d"] < 0) {            $leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);            $days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];            $result["d"] += $days;            $result["m"]--;            $month++;            if ($month > 12) {                $month -= 12;                $year++;            }        }    }    return $result;}function _date_normalize($base, $result){    $result = _date_range_limit(0, 60, 60, "s", "i", $result);    $result = _date_range_limit(0, 60, 60, "i", "h", $result);    $result = _date_range_limit(0, 24, 24, "h", "d", $result);    $result = _date_range_limit(0, 12, 12, "m", "y", $result);    $result = _date_range_limit_days(&$base, &$result);    $result = _date_range_limit(0, 12, 12, "m", "y", $result);    return $result;}/** * Accepts two unix timestamps. */function _date_diff($one, $two){    $invert = false;    if ($one > $two) {        list($one, $two) = array($two, $one);        $invert = true;    }    $key = array("y", "m", "d", "h", "i", "s");    $a = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $one))));    $b = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $two))));    $result = array();    $result["y"] = $b["y"] - $a["y"];    $result["m"] = $b["m"] - $a["m"];    $result["d"] = $b["d"] - $a["d"];    $result["h"] = $b["h"] - $a["h"];    $result["i"] = $b["i"] - $a["i"];    $result["s"] = $b["s"] - $a["s"];    $result["invert"] = $invert ? 1 : 0;    $result["days"] = intval(abs(($one - $two)/86400));    if ($invert) {        _date_normalize(&$a, &$result);    } else {        _date_normalize(&$b, &$result);    }    return $result;}$date = "2014-12-04 19:37:22";echo '
';print_r( _date_diff( strtotime($date), time() ) );echo '
'; ?>

The above are 46 very useful PHP code snippets (II). For more information, see PHP Chinese website (www.php1.cn )!