php – 将属性添加到wp_get_attachment_image

我想使用jquery lazyload来处理我的帖子缩略图的加载,为此我需要将一个data-original =属性添加到< img>标签wp_get_attachment_image正在创建.

我试过了：

$imgsrc = wp_get_attachment_image_src( get_post_thumbnail_id($post->ID),"full" );
$imgsrc = $imgsrc[0];
$placeholderimg = wp_get_attachment_image( 2897,"full",array('data-original'=>$imgsrc) );

但它没有像我预期的那样添加数据属性.

<img class="attachment-full" width="759" height="278" alt="..." src="..."></img>

看一下wp_get_attachment_image函数,看起来它应该可以工作：

function wp_get_attachment_image($attachment_id,$size = 'thumbnail',$icon = false,$attr = '') {


    $html = '';

    $image = wp_get_attachment_image_src($attachment_id,$size,$icon);

    if ( $image ) {

        list($src,$width,$height) = $image;

        $hwstring = image_hwstring($width,$height);

        if ( is_array($size) )

            $size = join('x',$size);

        $attachment =& get_post($attachment_id);

        $default_attr = array(

            'src'   => $src,'class' => "attachment-$size",'alt'   => trim(strip_tags( get_post_meta($attachment_id,'_wp_attachment_image_alt',true) )),// Use Alt field first

            'title' => trim(strip_tags( $attachment->post_title )),);

        if ( empty($default_attr['alt']) )

            $default_attr['alt'] = trim(strip_tags( $attachment->post_excerpt )); // If not,Use the Caption

        if ( empty($default_attr['alt']) )

            $default_attr['alt'] = trim(strip_tags( $attachment->post_title )); // Finally,use the title



        $attr = wp_parse_args($attr,$default_attr);

        $attr = apply_filters( 'wp_get_attachment_image_attributes',$attr,$attachment );

        $attr = array_map( 'esc_attr',$attr );

        $html = rtrim("<img $hwstring");

        foreach ( $attr as $name => $value ) {

            $html .= " $name=" . '"' . $value . '"';

        }

        $html .= ' />';

    }



    return $html;

}

我哪里错了？