Loop All Attachment URL In Posts Wordpress - php

Question

I Want to loop all attachment url and save new html.
Sorry, I only script kiddies. I only understand some code.
This my script php
function get_all_image_clickable($content) {
global $post;
$args_img = array(
'order' => 'ASC',
'post_type' => 'attachment',
'post_parent' => $post->ID,
'post_mime_type' => 'image',
'post_status' => null,
"what_to_show" =>"posts",
"showposts" =>-1,
"post_mime_type" =>"image"
);
$attachments = get_posts($args_img);
$i = 0;
$dom = new DOMDocument('UTF-8');
#$dom->loadHTML( utf8_decode($content) ); // Decode to simple ISO to avoid accent errors
$dom->preserveWhiteSpace = false;
$images = $dom->getElementsByTagName('img');
if( count($images) > 0 ) {
foreach ($images as $image) {
$width = $image->getAttribute('width'); // get the widths of each image
if( $width >= 860) { // if image is less than 860, add their old classes back in plus our new class
$clone_img = $image->cloneNode(); //clone node images
// Create DIV container
foreach ($attachments as $attachment) {
$parent = get_post($post->post_parent);
if($parent->post_status == "publish"){
$image_wrap = $dom->createElement('a');
$image_wrap->setAttribute('class', 'img-gallery' );
$image_wrap->setAttribute('href', get_attachment_link($attachment->ID));
}
$i++;
wp_reset_postdata();
}
$image_wrap->appendChild( $clone_img ); // Add to image to new container
$image->parentNode->replaceChild( $image_wrap, $image ); // Replace img object with all new elements
}
} // end if count
$content = $dom->saveHTML();
}
return $content;
}
add_filter( 'the_content' , 'get_all_image_clickable' , 15 );
i want to get all attachment url on its own image.
Sorry, my english bad.