If you want to use ImageMagick in combination with Laravel Valet, you need to install it first via Homebrew:
brew install imagemagick
pecl install imagick
Running pecl install imagick might result in this error message:
$ pecl install imagick
[...]
checking for pkg-config... no
pkg-config not found
configure: error: Please reinstall the pkg-config distribution
ERROR: `/private/tmp/pear/temp/imagick/configure --with-php-config=/usr/local/opt/php/bin/php-config --with-imagick' failed
To resolve this issue, run the following command:
brew install pkg-config
Now, pecl install imagick should work:
pecl install imagick
Finally, restart Valet:
valet restart
ImageMagick should now be available for use.