php - Imagemagick 与 imagick 的关系是什么？

Question

看来我没有安装 imagemagick 包。我的困惑是我的 php imagick 在没有安装 Imagemagick 的情况下如何工作？我认为这两者是协同工作的，因为 imagick 只是一个 PHP api。

root@se /usr/share/doc # dpkg --get-selections | grep imagemagick
imagemagick-6-common                            install
root@se /usr/share/doc # dpkg --get-selections | grep imagick
plesk-php73-imagick                             install
plesk-php74-imagick                             install
root@se /usr/share/doc # dpkg -L imagemagick-6-common
/.
/etc
/etc/ImageMagick-6
/etc/ImageMagick-6/coder.xml
/etc/ImageMagick-6/colors.xml
/etc/ImageMagick-6/delegates.xml
/etc/ImageMagick-6/log.xml
/etc/ImageMagick-6/magic.xml
/etc/ImageMagick-6/mime.xml
/etc/ImageMagick-6/policy.xml
/etc/ImageMagick-6/quantization-table.xml
/etc/ImageMagick-6/thresholds.xml
/etc/ImageMagick-6/type-apple.xml
/etc/ImageMagick-6/type-dejavu.xml
/etc/ImageMagick-6/type-ghostscript.xml
/etc/ImageMagick-6/type-windows.xml
/etc/ImageMagick-6/type.xml
/usr
/usr/share
/usr/share/ImageMagick-6
/usr/share/ImageMagick-6/english.xml
/usr/share/ImageMagick-6/francais.xml
/usr/share/ImageMagick-6/locale.xml
/usr/share/bug
/usr/share/bug/imagemagick-6-common
/usr/share/bug/imagemagick-6-common/presubj
/usr/share/bug/imagemagick-6-common/script
/usr/share/doc
/usr/share/doc/imagemagick-6-common
/usr/share/doc/imagemagick-6-common/NEWS.Debian.gz
/usr/share/doc/imagemagick-6-common/README.Debian
/usr/share/doc/imagemagick-6-common/README.txt.gz
/usr/share/doc/imagemagick-6-common/TODO.Debian
/usr/share/doc/imagemagick-6-common/changelog.Debian.gz
/usr/share/doc/imagemagick-6-common/copyright
/usr/share/doc/imagemagick-6-common/html
/usr/share/doc/imagemagick-6-common/html/README

Answer 1

Imagick 使用 ImageMagick。 Imagick 是一个调用 ImageMagick 的 API。因此，当您安装 Imagick 时，它会为您安装 ImageMagick，或者您必须先安装 ImageMagick。看
https://www.php.net/manual/en/book.imagick.php
您可以通过检查版本来检查是否安装了 ImageMagick:

<?php
exec("convert -version",$out,$returnval);
foreach($out as $text)
{echo "$text<br>";}
?>

或者您可以搜索以查看是否安装以及安装位置:

<?php
echo "<pre>";
system("which -a convert");  
echo "</pre>";
?> 

如果你认为你有 ImageMagick 7，那么试试

<?php
exec("magick -version",$out,$returnval);
foreach($out as $text)
{echo "$text<br>";}
?>

和/或

<?php
echo "<pre>";
system("which -a magick");  
echo "</pre>";
?> 

您还应该在以下位置查看您的 Imagick 信息

<?php phpinfo(); ?>