function add_user_avatar($user_id)
{
//get user details
$userData = get_userdata($user_id);
$userEmail = $userData->user_email;
$hash = md5($userEmail);
$avatarImage = imagecreate(100, 100);
$background = imagecolorallocate($avatarImage, hexdec(substr($hash, 0, 2)), hexdec(substr($hash, 2, 2)), hexdec(substr($hash, 4, 2)));
$imageData = createBase64FromImageResource($avatarImage);
$src = 'data: image/png;base64,' . $imageData;
add_user_meta($user_id, '_avatar_image', $src, true);
}
<?php
function createBase64FromImageResource($imgResource)
{
ob_start();
imagepng($imgResource);
$imgData = ob_get_contents();
ob_end_clean();
return base64_encode($imgData);
}
if (isset($_POST['username'])) {
$username = $_POST['username'];
$hash = md5($username);
$avatarImage = imagecreate(250, 250);
$background = imagecolorallocate($avatarImage, hexdec(substr($hash, 0, 2)), hexdec(substr($hash, 2, 2)), hexdec(substr($hash, 4, 2)));
$imageData = createBase64FromImageResource($avatarImage);
$src = 'data: image/png;base64,' . $imageData;
print '<img src="' . $src . '">';
} else {
?>
<html>
<head>
<title>Avatar Generation</title>
</head>
<body>
<form action='#' method='post'>
<input type='text' name='username'>
<input type='submit'>
</form>
</body>
</html>
