问题
I installed Imagemagick using Homebrew on Lion, everything is fine except that it doesn't work at all when being called from php. Console:
$ convert -version
Version: ImageMagick 6.7.1-1 2011-07-29 Q16 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2011 ImageMagick Studio LLC
Features: OpenMP
$ which convert
/usr/local/bin/convert
PHP:
echo exec ('convert -version');
or exec('convert -version', $output); var_dump($output);
Produces nothing (or an empty array).
exec ('/usr/local/bin/convert') // works, but
exec ('which convert') // doesn't
I need to test this locally to make sure I can detect convert in production environment. But I can't properly test it. The PATH is set and it works in Terminal, but not from PHP.
Resolved:
Turns out, for php to work convert should be in /usr/bin/ so this solved it:
ln -s /usr/local/bin/convert /usr/bin/convert
Update
It was becasue of MAMP, here is the fix: http://firedevcom.tumblr.com/post/22791937644/fix-for-homebrew-imagemagick-and-mamp
Open /Applications/MAMP/Library/bin/envvars
And comment out the following lines:
DYLD_LIBRARY_PATH="/Applications/MAMP/Library/lib:$DYLD_LIBRARY_PATH"
export DYLD_LIBRARY_PATH
Done.
回答1:
Adding my own answer here so you can vote:
It was caused by MAMP, here is the fix: http://firedevcom.tumblr.com/post/22791937644/fix-for-homebrew-imagemagick-and-mamp
Open /Applications/MAMP/Library/bin/envvars
And comment out the following lines:
DYLD_LIBRARY_PATH="/Applications/MAMP/Library/lib:$DYLD_LIBRARY_PATH"
export DYLD_LIBRARY_PATH
Done.
回答2:
sudo ln -s /usr/local/bin/convert /usr/bin/convert
回答3:
Verify that convert in is the server's PATH environment variable. Or just specify the full path:
exec('/usr/local/bin/convert -version');
回答4:
The exec returns the last line from the result of the command which happens to be an empty string.
If you want to get the output, just do something like this:
exec('convert -version', $output);
var_dump($output); // it is an array which filled with every line of output from the command
回答5:
Simply use exec("PATH=\$PATH:/usr/local/bin; convert file.pdf file.png"); It will add convert to PATH on runtime.
回答6:
instead of just exec("convert .... "); use a full path. you can get it by typing the terminal
type convert
you should get something like: convert is hashed (/opt/local/bin/convert)
so now use:
exec("/opt/local/bin/convert .... ");
[credits to @Nikki]
after that comment out
DYLD_LIBRARY_PATH="/Applications/MAMP/Library/lib:$DYLD_LIBRARY_PATH" export DYLD_LIBRARY_PATH
in /Applications/MAMP/Library/bin/envvars
来源：https://stackoverflow.com/questions/7163497/resolved-mamp-php-cant-exec-convert-after-homebrew-imagemagick-install