php getimagesize 获取不到图片信息 在浏览器中却可以正常打开
<code><?php print_r(getimagesize('http://kids.file.putaocdn.com/file/4/ee/4eee9185e2fc60188b49bacdcc0c65ccfdecf8e8.jpg'));</code></code>
求解
回复内容:
php getimagesize 获取不到图片信息 在浏览器中却可以正常打开
<code><?php print_r(getimagesize('http://kids.file.putaocdn.com/file/4/ee/4eee9185e2fc60188b49bacdcc0c65ccfdecf8e8.jpg'));</code></code>
求解
<code>[2015-09-11 15:27:58:428] GET /file/4/ee/4eee9185e2fc60188b49bacdcc0c65ccfdecf8e8.jpg HTTP/1.0 Host: kids.file.putaocdn.com [2015-09-11 15:27:58:477] HTTP/1.0 200 OK Date: Fri, 11 Sep 2015 01:43:19 GMT Last-Modified: Thu, 27 Aug 2015 07:15:26 GMT ETag: 4eee9185e2fc60188b49bacdcc0c65ccfdecf8e8 Content-Type: image/jpeg Cache-Control: max-age=30240000 Content-Length: 156202 Content-Encoding: gzip Via: http/1.1 PT-JH-C1 ( [cRs f ]) Server: PT-AB Age: 1 X-Via: 1.0 tzh62:8080 (Cdn Cache Server V2.0), 1.0 qxz50:0 (Cdn Cache Server V2.0) Connection: close</code>
通过抓包得知, 楼主所请求的这个图片, 对方的服务器, 不按套路出牌, 不管客户端支持不支持gzip
解码,
而直接将内容使用gzip
压缩之后输出, 所以导致PHP
获取到的数据是经过压缩的,而你没有指定让它解压,
所以把它压缩后的数据当成图片来进行解析, 而这个数据当然不是图片了, 所以就得不到图片的信息了.
使用下面的代码即可:
<?php var_dump(getimagesize('compress.zlib://http://kids.file.putaocdn.com/file/4/ee/4eee9185e2fc60188b49bacdcc0c65ccfdecf8e8.jpg'));
先检查一下 file_get_contents('http://kids.file.putaocdn.com/file/4/ee/4eee9185e2fc60188b49bacdcc0c65ccfdecf8e8.jpg')
是否能成功。很可能是php设置不能获取远程图片,或者请求时对方屏蔽了php的请求。
如果文件可以成功获取,那把文件保存下来,再次使用getimagesize识别。

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PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

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