php正则匹配文章中的远程图片地址并下载图片到本地
今天在做一个简单的采集程序需要下载对方网站内容,然后把内容中的图片再保存在本地服务器上,下面我来给各位同介绍我的具体操作方法,下载图片主要用到了file_get_contents 函数,具体方法如下。
这里我们使用php的正则表达式来实现:
代码如下 | 复制代码 |
$content = '这里是文章内容,这里插入一张图片测试 ![]() $content = stripslashes ( $content ); $img_array = array (); // 匹配所有远程图片 preg_match_all ( "/(src|SRC)=["|'| ]{0,}(http://(.*).(gif|jpg|jpeg|bmp|png))/isU", $content, $img_array ); // 匹配出来的不重复图片 $img_array = array_unique ( $img_array [2] ); print_r($img_array); |
上面就将远程图片给匹配出来了,我们需要将其保持到本地。这里需要注意两点:
1.图片保存路径(图片存储目录)
2.实际访问图片地址
下面是完整实例:(你可以保存到本地服务器修改相应地方进行测试)
代码如下 | 复制代码 |
//保存文章中远程图片到本地 //作者:yanue; // 文件保存目录路径(请更换为你自己的路径, 你可以echo一下) $save_path = $_SERVER ['DOCUMENT_ROOT'] . 'swfupload/attached/'; // 文件保存目录URL $save_url = '/swfupload/attached/'; $save_path = realpath ( $save_path ) . '/'; // 图片存储目录 $imgPath = $save_path . date ( "Ymd" ); $imgUrl = $save_url . date ( "Ymd" ); // 创建文件夹 |

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