從html獲取文本與preg_match_all

Question

我有htmlcode如何獲得數組[0]，BL-5CA數組[2] 700 mAh，諾基亞作爲數組[3]使用PHP。 itry like this

preg_match_all('~<span>capacity(.*?)mAh~si', $result, $matches[0]); 
preg_match_all('~<span>Model(.*?)</span></div>~si', $result, $matches[1]); 
preg_match_all('~<span>Brand(.*?)</span></div>~si', $result, $matches[2]); 

它顯示我空數組。請幫我解決它

<div class="b-goods-specifications mod_cutted"> <div class="b-goods-specifications-item"> <ul class="b-goods-specifications-list"> <li class = "b-goods-specifications-row g-clearfix "> <div class="b-goods-specifications-cell"> <span> **capacity** </ span> </ div> <div class="b-goods-specifications-cell"> **700 mAh** </ div> </ li> <li class="b-goods-specifications-row g-clearfix"> <div class="b-goods-specifications-cell"> <span> **Model** </ span> </ div > <div class="b-goods-specifications-cell"> **BL-5CA** </ div> </ li> <li class="b-goods-specifications-row g-clearfix"> <div class = "b-goods-specifications-cell "> <span> **Brand** </ span> </ div> <div class="b-goods-specifications-cell"> **Nokia** </ div> </ li> <li class =" b-goods -specifications-row g-clearfix "> <div class="b-goods-specifications-cell"> <span> Type </ span> </ div> <div class="b-goods-specifications-cell"> Li -ion ​​</ div> </ li> </ ul> </ div> </ div> 

Answer 1

使用PHP DOM，它會比正則表達式更簡單。

http://php.net/manual/en/book.dom.php