<script type="text/javascript">
function submitForm() {
var thelang = document.getElementById('lang').options[document.getElementById('lang').selectedIndex].value;
window.location.href = window.location.pathname + '?lang=' + thelang;
}
</script><?php session_start() ?>
<?php
require("config.php");
if(!isset($_GET['lang'])) {
$lng = 'en';
}
else {
$lng = $_GET['lang'];
}
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="get">
<label for="lang">Select Language:</label>
<select id="lang" name="lang" onchange="submitForm()">
<option value="en"<?php if( $_GET['lang'] != 'ar'){ echo " selected=\"selected\"";} ?> > English</option>
<option value="ar"<?php if( $_GET['lang'] == 'ar'){ echo " selected=\"selected\"";} ?> >Arabic</option>
</select>
</form>
<textarea cols="70" rows="5" readonly style="resize:none"><?php echo $trans['topnews']; ?> </textarea>
</body>
</html>I am new to implementing translation in PHP .I have a text are in which it loads content from database. once the selected value is English , the text area is in English and once it's Arabic, the text area content is in Arabic . Everything is working great but upon loading the page for the first time before selecting any language i has an error ( Undefined index:lang in C:\xampp\htdocs\project\shownews.php) when I select a value this error no longer displays
</div>
try this
<option value="en"<?php if( $lng != 'ar'){ echo " selected=\"selected\"";} ?> > English</option>
<option value="ar"<?php if( $lng == 'ar'){ echo " selected=\"selected\"";} ?> >Arabic</option>