php把采集内容中图片地址下载并替换成本地地址,
php把采集内容中图片地址下载并替换成本地地址,
把字符串中地址全部获取到一个数组我们利用preg_match_all函数
代码如下 复制代码
$str='
$pattern="//";
preg_match_all($pattern,$str,$match);print_r($match);
?>
结果
Array
(
[0] => Array
(
[0] =>
)
[1] => Array
(
[0] => upfiles/2009/07/1246430143_1.jpg
)
)
有了上面核心函数下面就好做了
代码如下 复制代码
/**
* 获取替换文章中的图片路径
* @param string $xstr 内容
* @param string $keyword 创建照片的文件名
* @param string $oriweb 网址
* @return string
*
*/
function replaceimg($xstr,$keyword, $oriweb){
//保存路径
$d = date('Ymd', time());
$dirslsitss = '/var/www/weblist/uploads/'.$keyword.'/'.$d;//分类是否存在
if(www.111cn.net)(!is_dir($dirslsitss)) {
@mkdir($dirslsitss, 0777);
}
//匹配图片的src
preg_match_all('#]*>#i', $xstr, $match);
foreach($match[1] as $imgurl){
$imgurl = $imgurl;
if(is_int(strpos($imgurl, 'http'))){
$arcurl = $imgurl;
} else {
$arcurl = $oriweb.$imgurl;
}
$img=file_get_contents($arcurl);
if(!empty($img)) {
//保存图片到服务器
$fileimgname = time()."-".rand(1000,9999).".jpg";
$filecachs=$dirslsitss."/".$fileimgname;
$fanhuistr = file_put_contents( $filecachs, $img );
$saveimgfile = "/uploads/$keyword"."/".$d."/".$fileimgname;
$xstr=str_replace($imgurl,$saveimgfile,$xstr);
}
}
return $xstr;
}
from:http://www.111cn.net/phper/php-cy/48607.htm

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