PHP8.1 -如何让imageavif()工作？

Question

最近，我将我的PHP版本升级到8.1-fpm，还将Debian升级到Bullseye。我在某个地方读到Bullseye提供了AVIF支持，但是当我尝试使用imageavif()时，我得到了以下错误：

PHP message: PHP Fatal error:  Uncaught Error: Call to undefined function imageavif()

我在服务器上运行了"php -i \ grep“，它返回：

ImageMagick supported formats => 3FR, 3G2, 3GP, AAI, AI, APNG, ART, ARW, AVI, AVIF, AVS, BGR, BGRA, BGRO, BIE, BMP, BMP2, BMP3, BRF, CAL, CALS, CANVAS, CAPTION, CIN, CIP, CLIP, CMYK, CMYKA, CR2, CR3, CRW, CUR, CUT, DATA, DCM, DCR, DCX, DDS, DFONT, DNG, DPX, DXT1, DXT5, EPDF, EPI, EPS, EPS2, EPS3, EPSF, EPSI, EPT, EPT2, EPT3, ERF, FAX, FILE, FITS, FRACTAL, FTP, FTS, G3, G4, GIF, GIF87, GRADIENT, GRAY, GRAYA, GROUP4, H, HALD, HDR, HEIC, HISTOGRAM, HRZ, HTM, HTML, HTTP, HTTPS, ICB, ICO, ICON, IIQ, INFO, INLINE, IPL, ISOBRL, ISOBRL6, J2C, J2K, JBG, JBIG, JNG, JNX, JP2, JPC, JPE, JPEG, JPG, JPM, JPS, JPT, JSON, K25, KDC, LABEL, M2V, M4V, MAC, MAGICK, MAP, MASK, MAT, MATTE, MEF, MIFF, MKV, MNG, MONO, MOV, MP4, MPC, MPG, MRW, MSL, MTV, MVG, NEF, NRW, NULL, ORF, OTB, OTF, PAL, PALM, PAM, PATTERN, PBM, PCD, PCDS, PCL, PCT, PCX, PDB, PDF, PDFA, PEF, PES, PFA, PFB, PFM, PGM, PGX, PICON, PICT, PIX, PJPEG, PLASMA, PNG, PNG00, PNG24, PNG32, PNG48, PNG64, PNG8, PNM, POCKETMOD, PPM, PREVIEW, PS, PS2, PS3, PSB, PSD, PTIF, PWP, RADIAL-GRADIENT, RAF, RAS, RAW, RGB, RGBA, RGBO, RGF, RLA, RLE, RMF, RW2, SCR, SCT, SFW, SGI, SHTML, SIX, SIXEL, SPARSE-COLOR, SR2, SRF, STEGANO, SUN, TEXT, TGA, THUMBNAIL, TIFF, TIFF64, TILE, TIM, TTC, TTF, TXT, UBRL, UBRL6, UIL, UYVY, VDA, VICAR, VID, VIDEO, VIFF, VIPS, VST, WBMP, WEBM, WEBP, WMV, WPG, X, X3F, XBM, XC, XCF, XPM, XPS, XV, XWD, YCbCr, YCbCrA, YUV

我如何让imageavif()工作？我是不是遗漏了什么？

编辑:我运行了函数“print_r(gd_info())”，这是结果数组：

Array
(
    [GD Version] => 2.3.0
    [FreeType Support] => 1
    [FreeType Linkage] => with freetype
    [GIF Read Support] => 1
    [GIF Create Support] => 1
    [JPEG Support] => 1
    [PNG Support] => 1
    [WBMP Support] => 1
    [XPM Support] => 1
    [XBM Support] => 1
    [WebP Support] => 1
    [BMP Support] => 1
    [AVIF Support] => 
    [TGA Read Support] => 1
    [JIS-mapped Japanese Font Support] => 
)

似乎我有GD，但它的AVIF支持没有设置。我怎样才能让它支持AVIF？

另外，我目前正在使用imagewebp()，该函数工作得很好。

编辑:感谢Nico Haase给我指点了GitHub的ř问题，řej Sur的PHP存储库- https://github.com/oerdnj/deb.sury.org/issues/1641。

同时，有什么我可以做的，让imageavif()工作不会太过分，还是最好只是等待？

Answer 1

GD扩展依赖于libavif包来提供底层AVIF编解码器。GD扩展需要libavif版本0.8.2或更高版本。

Ubuntu/Debian

apt install libavif-dev

RHEL/Fedora

dnf install libavif-devel

一旦安装了依赖项，就可以使用AVIF支持在./配置脚本中使用新的- with标志编译PHP。

./buildconf --force
./configure --enable-gd --with-avif

请注意，上面的./configure命令只是一个例子；对于生产系统，也要确保启用其他扩展。

来源：https://php.watch/versions/8.1/gd-avif