myCode

 <?php
if(isset($_POST['button'])) {

$imgFile = $_FILES['img']['name'];
$tmp_dir = $_FILES['img']['tmp_name'];
$imgSize = $_FILES['img']['size'];

if(!empty($imgFile))
{

$upload_dir = 'images/'; // upload directory

$imgExt = strtolower(pathinfo($imgFile,PATHINFO_EXTENSION)); // get image extension

// valid image extensions
$valid_extensions = array('jpeg', 'jpg', 'png', 'gif'); // valid extensions

// rename uploading image
$coverpic = rand(1000,1000000).".".$imgExt;
$deat = $upload_dir.'/'.$coverpic;
// allow valid image file formats
if(in_array($imgExt, $valid_extensions)){
// Check file size ‘5MB’
if($imgSize < 5000000) {
move_uploaded_file($tmp_dir,$upload_dir.$coverpic);
}
else{
$errMSG = "Sorry, your file is too large.";
}
}
}//empty if end

else{
$errMSG = "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
}

$dbhost = 'localhost';
$dbuser = 'root';
$dbpass = '';

$conn = mysql_connect($dbhost,$dbuser,$dbpass);

if(!$conn ) {
die('Could not connect:'.mysql_error());
}

mysql_select_db('jamesthew');
$u_name = $_POST['name'];
$usr_name = $_POST['username'];
$u_pass = $_POST['password'];
$u_age = $_POST['age'];
$u_gender = $_POST['gender'];
$u_email = $_POST['email'];

$usrid=$_SESSION['uid'];
if(!empty($imgFile)):
$sqlt="UPDATE owner SET name = '$u_name',username = '$usr_name',password='$u_pass',image='$deat',age='$u_age',gender='$u_gender',email='$u_email' WHERE id='$usrid'";

$retval = mysql_query( $sqlt, $conn );

if(! $retval ) {
die('Could not update data: ' . mysql_error());
}
echo '<div class="alert alert-success">Updated data successfully </div>';

else:
$sqlt="UPDATE owner SET name = '$u_name',username = '$usr_name',password='$u_pass',age='$u_age',gender='$u_gender',email='$u_email' WHERE id='$usrid'";

$retval = mysql_query( $sqlt, $conn );

if(! $retval ) {
die('Could not update data: ' . mysql_error());
}
echo '<div class="alert alert-success">Updated data successfully </div>';
//header("Refresh: 2; URL=index.php");
endif;
mysql_close($conn);
}else {
?>

<form class="form-inline" method="POST" action="" enctype="multipart/form-data">
<div class="form-group">
<label for="name">Name:</label>
<input type="text" class="form-control" id="name" name="name" value="<?php echo $uname?>" placeholder="Your Name">
</div>

<div class="form-group">
<label for="username">Username:</label>
<input type="text" class="form-control" id="username" name="username" value="<?php echo $usrname?>" placeholder="Your Username">
</div>
<hr>
<div class="form-group">
<label for="password">Password:</label>
<input type="text" class="form-control" id="password" name="password" value="<?php echo $usrpass?>" placeholder="Your Password">
</div>

<div class="form-group">
<label for="email">Email:</label>
<input type="email" class="form-control" id="email" name="email" value="<?php echo $usremail?>" placeholder="Your Password">
</div>
<hr>
<div class="form-group">
<label for="email">Gender:</label>
<input type="text" class="form-control" id="gender" name="gender" value="<?php echo $usrgender?>" placeholder="Your Password">
</div>

<div class="form-group">
<label for="age">Age:</label>
<input type="text" class="form-control" id="age" name="age" value="<?php echo $usrage?>" placeholder="Your Password">
</div>
<hr>
<div class="form-group">
<label for="img">Image:</label>
<input type="file" accept="image/*" class="form-control" id="img" name="img" placeholder="Your Image">
</div>

<p style="color:white;">----------</p>
<button type="submit" name="button" class="btn btn-warning">Update Details</button>
</form>

<?php
}
?>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
</div>
</div>

</div>