<?php 

$rows = get_field(‘index_slide‘,‘options‘);  //全局变量加‘options‘
if($rows)
{
    foreach($rows as $row)
    {
 ?>        
             <a href="http://www.mamicode.com/<?php echo $row[‘url‘]; ?>"   target="_blank">
                <img src="http://www.mamicode.com/<?php echo $row[‘img‘]; ?>"  >
            </a>
<?php
    }
 }            
 ?>