How to display image using imagepng() in image tag of HTML in PHP

<?php

    $im = imagecreatefrompng("path of image);
    if ( $im ) {
        ob_start();
        imagepng($im);
        $imgData=ob_get_clean();
        imagedestroy($im);
        echo '<img src="data:image/png;base64,'.base64_encode($imgData).'" />';
    }
    ?>