ImageMagick convert 在命令行中工作，但不能通过 PHP exec()
我正在使用 PHP 的 exec() 来使用 ImagicMagick 的 convert 转换图像.这是在 CentOS 服务器上运行的.
exec(转换 http://www.google.com/images/srpr/logo3w.png.jpg-resize 640/home/mysite/public_html/public/img/posts/original/1414_301a4.jpg);使用 exec() 不会导致新图像出现在目标文件夹中.但是，如果我要在 shell 中运行相同的命令，它会完美运行！
我相信这是一个 PATH 问题.如果是这样，如何检查 PHP 使用的路径，以及如何在 PHP 中设置正确的路径?
解决方案首先，您应该尝试使用一个确实存在且可检索的输入文件:
wget http://www.google.com/images/srpr/logo3w.png.jpg--2012-08-21 20:55:24-- http://www.google.com/images/srpr/logo3w.png.jpg正在解析 www.google.com (www.google.com)... 173.194.35.179, 173.194.35.177, 173.194.35.178, ...正在连接到 www.google.com (www.google.com)|173.194.35.179|:80... 已连接.已发送 HTTP 请求，等待响应... 404 Not Found2012-08-21 20:55:24 错误 404:未找到.
然后，查看您的 PHP 使用了哪个 convert:
exec(which convert 2>/tmp/whichconvert.2 1>whichconvert.1)和
cat/tmp/whichconvert.{1,2}最后，还可以尝试convert的完整路径:
exec(/usr/local/full/path/to/convert logo:-resize 640/home/mysite/public_html/public/img/posts/original/1414_301a4.jpg);然后
识别/home/mysite/public_html/public/img/posts/original/1414_301a4.jpg更新:
您要检索的文件可能不是logo3w.png.jpg，而是logo3w.png:
另外， 如果它仅适用于本地文件(不适用于远程 http-URI)，您可能需要检查 convert<使用的 http 委托 是否/code> 确实安装在您的系统上:
convert -list 委托 |grep httphttps =>/opt/local/bin/curl"-s -k -o %o"https:%M"另外，检查运行 PHP 的用户帐户是否确实有权写入目标目录:
exec(touch/home/mysite/public_html/public/img/posts/original/touchtest);然后
ls -l/home/mysite/public_html/public/img/posts/original/touchtestI am using PHP's exec() to convert an image using ImagicMagick's convert. This is being run on a CentOS server.
exec(convert http://www.google.com/images/srpr/logo3w.png.jpg
-resize 640 /home/mysite/public_html/public/img/posts/original/1414_301a4.jpg);
Using exec() does not cause the new image to appear in the destination folder. However if I were to run the same command in the shell, it works perfectly!
I believe this is a PATH problem. If so, how can I check the path that PHP is using, and how can I set the correct path in PHP?
解决方案First, you should try with an input file that does indeed exist and is retrievable:
wget http://www.google.com/images/srpr/logo3w.png.jpg --2012-08-21 20:55:24-- http://www.google.com/images/srpr/logo3w.png.jpg Resolving www.google.com (www.google.com)... 173.194.35.179, 173.194.35.177, 173.194.35.178, ... Connecting to www.google.com (www.google.com)|173.194.35.179|:80... connected. HTTP request sent, awaiting response... 404 Not Found 2012-08-21 20:55:24 ERROR 404: Not Found.
Then, to see which convert your PHP uses:
exec(which convert 2>/tmp/whichconvert.2 1>whichconvert.1)
and
cat /tmp/whichconvert.{1,2}
Last, also try with the full path to convert:
exec(/usr/local/full/path/to/convert logo:
-resize 640 /home/mysite/public_html/public/img/posts/original/1414_301a4.jpg);
and then
identify /home/mysite/public_html/public/img/posts/original/1414_301a4.jpg
Update:
The file that you meant to retrieve was probably not logo3w.png.jpg, but logo3w.png:
wget http://www.google.com/images/srpr/logo3w.png --2012-08-21 21:04:22-- http://www.google.com/images/srpr/logo3w.png Resolving www.google.com (www.google.com)... 173.194.35.180, 173.194.35.177, 173.194.35.179, ... Connecting to www.google.com (www.google.com)|173.194.35.180|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 7007 (6.8K) [image/png] Saving to: ‘logo3w.png’ 100%[=====================================================>] 7,007 --.-K/s in 0.02s 2012-08-21 21:04:22 (451 KB/s) - ‘logo3w.png’ saved [7007/7007]
Also, in case it works for local files only (not remote http-URIs) you may need to check if the http delegate used by convert is indeed installed on your system:
convert -list delegate | grep http
https => "/opt/local/bin/curl" -s -k -o "%o" "https:%M"
Plus, check if the user account your PHP runs under does indeed have the right to write to the target directory:
exec(touch /home/mysite/public_html/public/img/posts/original/touchtest);
and then
ls -l /home/mysite/public_html/public/img/posts/original/touchtest
相关文章