Detect Browser Language in PHP

<?php   
    $lang = getenv("HTTP_ACCEPT_LANGUAGE");
    $set_lang = explode(',', $lang);
    if (isset($_POST['lang'])) 
        {
            $taal = $_POST['lang'];
            setcookie("lang", $taal);
            header('Location: /p/');
        }
    else 
        {
            setcookie("lang", $set_lang[0]);
            echo $set_lang[0];
            echo '<br>';
            echo $set_lang[1];
            header('Location: /p/');
        } 
?>

Nivo slider options

$("#nivoSlider").nivoSlider({
effect: 'random', // Specify sets like: 'fold,fade,sliceDown'
slices: 15, // For slice animations
boxCols: 8, // For box animations
boxRows: 4, // For box animations
animSpeed: 500, // Slide transition speed
pauseTime: 3000, // How long each slide will show
startSlide: 0, // Set starting Slide (0 index)
directionNav: true, // Next & Prev navigation
controlNav: true, // 1,2,3... navigation
controlNavThumbs: false, // Use thumbnails for Control Nav
pauseOnHover: true, // Stop animation while hovering
manualAdvance: false, // Force manual transitions
prevText: 'Prev', // Prev directionNav text
nextText: 'Next', // Next directionNav text
randomStart: false, // Start on a random slide
beforeChange: function(){}, // Triggers before a slide transition
afterChange: function(){}, // Triggers after a slide transition
slideshowEnd: function(){}, // Triggers after all slides have been shown
lastSlide: function(){}, // Triggers when last slide is shown
afterLoad: function(){} // Triggers when slider has loaded
});

PDO connection with MySQL

<?PHP
# gestione delle eccezioni in fase di connessione con PDO

// collegamento al database
$col = 'mysql:host=localhost;dbname=DATABASE_NAME';

// blocco try per il lancio dell'istruzione
try {
  // connessione tramite creazione di un oggetto PDO
  $db = new PDO($col , 'username', 'password');
}
// blocco catch per la gestione delle eccezioni
catch(PDOException $e) {
  // notifica in caso di errorre
  echo 'Attenzione: '.$e->getMessage();
}


/* disabilitazione dell'auto-commit
$db->beginTransaction();

// esecuzione delle query
$sql = $db->exec("UPDATE filnet_page SET img_code = 'AU002.jpgTEST' WHERE id = 67");

// applicazione delle modifiche
$db->commit(); */


# utilizzo del metodo query()

// definizione della query 
$sql = 'SELECT field1, field2 FROM table_name ORDER BY id';  

// visualizzazione dei risultati
foreach($db->query($sql) as $row){  ?>

PHP directory listing in reverse order, function rsort

rsort

(PHP 4, PHP 5)

rsort — Sort an array in reverse order

Case history

PHP directory listing in reverse order

Description

bool rsort ( array &$array [, int $sort_flags = SORT_REGULAR ] )

This function sorts an array in reverse order (highest to lowest).

Parameters

array
The input array.

sort_flags
You may modify the behavior of the sort using the optional parameter sort_flags, for details see sort().

Return Values

Returns TRUE on success or FALSE on failure.

Examples

Example #1 rsort() example

<?php
$fruits = array("lemon", "orange", "banana", "apple");
rsort($fruits);
foreach ($fruits as $key => $val) {
    echo "$key = $val\n";
}
?>

Output

0 = orange
1 = lemon
2 = banana
3 = apple

 

PHP function calculate the distance between two coordinates (latitude, longitude)

function distance($lat1, $lng1, $lat2, $lng2, $miles = true)
{
$pi80 = M_PI / 180;
$lat1 *= $pi80;
$lng1 *= $pi80;
$lat2 *= $pi80;
$lng2 *= $pi80;

$r = 6372.797; // mean radius of Earth in km
$dlat = $lat2 - $lat1;
$dlng = $lng2 - $lng1;
$a = sin($dlat / 2) * sin($dlat / 2) + cos($lat1) * cos($lat2) * sin($dlng / 2) * sin($dlng / 2);
$c = 2 * atan2(sqrt($a), sqrt(1 - $a));
$km = $r * $c;

return ($miles ? ($km * 0.621371192) : $km);
}