I have HTML like 

```
<td class="td_scheda_modello_dati">

       <img src="/webapp/safilo/gen_img/p_verde.gif" width="15" height="15" alt="" border="0">

</td>

```

I want to extract the img src from this HTML using preg\_match\_all(). 

I have done this 

```
preg_match_all('#<td class=td_scheda_modello_dati>(.*)<td>#',$detail,$detailsav);

```

It should give the whole img tag.But it doesn't give me the img tag. So what changes should be done to get the specific value?