{loop $list $t}

<a class="listimg" href="{$t.url}"><img class="src-img" src="{var_dump($t)}" alt="{$t.title}"></a>

<?php break;?> 终止循环

{/loo}

{content module=$my_module id=$t.id return=c}
                                {loop $c.sctp $i $tt}
                                   {if !$i}
                                <a class="listimg" href="{$t.url}"><img class="src-img" src="{dr_get_file($tt)}_q520" alt="{$t.title}"></a>
                                   {/if}
                                {/loop}
                                {/content}