huanyichuang

<?php
/** 
 * Lozad
 * Attribute replacement refernce from: https://gist.github.com/ahmadassaf/9332846
 */
function faster_replace_img_src( $content ){
	if ( function_exists( 'is_amp_endpoint' ) && ! is_amp_endpoint() ) {
		$html = preg_replace_callback( '#(<img\s[^>]*src)="([^"]+)"#' , 'callback_img' , $content );
		$html = preg_replace( '/(<img\s[^>]*)class="(.*)"/', '$1 class="lozad $2"' , $html );
		$html = preg_replace( '/(<img\s[^>]*)srcset="(.*)"/', '$1 data-srcset="$2"' , $html );