Get images from the post

Question

Using Add Media I am inserting images in the Post.I want to reterive these only these images on the single post page.I am using get_attached_media function to reterive these images.But it returns an empty array.

 <?php $media_image = get_attached_media( 'image', $post->ID );  //print_r($media_image);?>
                <div class ="single-post-flex-slider">
                    <ul class="slides">
                        <?php foreach($attachments as $image){ 
                            $image_attr = wp_get_attachment_image_src( $image->ID,array(500,500) );
                        ?>
                        <li> <img src="<?php echo $image_attr[0] ?>" width="<?php echo $image_attr[1] ?>" height="<?php echo $image_attr[2] ?>" /></li>
                        <?php } ?>
                    </ul>
                </div>

Answer 1

The Image added by Add Media is included in the Content.So I have splitted the image from the content.Below is the working code for my Question.

<?php $output = preg_match_all('/<img.+src=[\'"]([^\'"]+)[\'"].*>/i', $post->post_content, $matches); ?>

<div class ="single-post-flex-slider">
    <ul class="slides">
        <?php for($i =0;$i<$output;$i++){ ?>
        <li> <img src="<?php echo $matches[1][$i]; ?>" width="500px" height="300px" /></li>
        <?php } ?>
    </ul>
</div>