php获取网页中图片、DIV内容的简单方法
这篇文章主要介绍了php获取网页中图片、DIV内容的简单方法,都是通过正则表达式实现的,强大的正则啊,需要的朋友可以参考下
1、获取网页中所有的图片:
复制代码 代码如下:
//取得指定位址的內容,并储存至 $text
$text=file_get_contents('http://www.jb51.net/');
//取得所有img标签,,并储存至二维数组 $match 中
preg_match_all('/]*>/i', $text, $match);
//打印出match
print_r($match);
?>
2、获取网页中的第一张图片:
复制代码 代码如下:
//取得指定位址的內容,并储存至 $text
$text=file_get_contents('http://www.jb51.net/');
//取得第一个 img 标签,并储存至二维数组 $match 中
preg_match('/]*>/Ui', $text, $match);
//打印出match
print_r($match);
?>
3、获取指定网页中特定的 div 区块数据:
复制代码 代码如下:
//取得指定位址的內容,并储存至 $text
$text=file_get_contents('http://www.jb51.net/');
//去除换行及空白字符(序列化內容才需使用)
//$text=str_replace(array("/r","/n","/t","/s"), '', $text);
//取出 div 标签且 id 为 PostContent 的內容,并储存至二维数组 $match 中
preg_match('/
//打印出match[0]
print($match[0]);
?>
4. 上述2及3的結合:
复制代码 代码如下:
//取得指定位址的內容,并储存至 $text
$text=file_get_contents('http://www.jb51.net/');
//取出 div 标签且 id 为 PostContent 的內容,并储存至二维数组 $match 中
preg_match('/
//取得第一个 img 标签,并储存至二维数组 $match2 中
preg_match('/
//打印出match2[0]
print_r($match2[0]);
?>

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