我正在尝试在同一台机器上同时启用 imagick 和 gmagick 扩展（ubuntu 12.04 - 尽管在旧版本中存在同样的问题）。
我有一个有效的 ImageMagick/Imagick 安装 - 支持 206 种格式......直到我启用 gmagick 模块 - 然后它报告支持 0。由于此响应，我能够隔离问题：https ://stackoverflow.com/a/11350707/543871 。启用 gmagick 后，graphicsmagick 工作得非常好，只是以 imagemagick 为代价。有任何想法吗？这是启用 gmagick 前后 phpinfo 的输出：
之前（刚刚安装了imagick）：
imagick module enabled
imagick module version 3.0.1
imagick classes Imagick, ImagickDraw, ImagickPixel, ImagickPixelIterator
ImageMagick version ImageMagick 6.6.9-7 2012-04-30 Q16 http://www.imagemagick.org
ImageMagick copyright Copyright (C) 1999-2011 ImageMagick Studio LLC
ImageMagick release date 2012-04-30
ImageMagick number of supported formats: 206
ImageMagick supported formats 3FR, A, AAI, AI, ART, ARW, AVI, AVS, B, BGR, BGRA, BMP, BMP2, BMP3, BRF, C, CAL, CALS, CANVAS, CAPTION, CIN, CIP, CLIP, CMYK, CMYKA, CR2, CRW, CUR, CUT, DCM, DCR, DCX, DDS, DFONT, DJVU, DNG, DOT, DPX, EPDF, EPI, EPS, EPS2, EPS3, EPSF, EPSI, EPT, EPT2, EPT3, ERF, EXR, FAX, FITS, FRACTAL, FTS, G, G3, GIF, GIF87, GRADIENT, GRAY, GROUP4, HALD, HDR, HISTOGRAM, HRZ, HTM, HTML, ICB, ICO, ICON, INFO, INLINE, IPL, ISOBRL, J2C, JNG, JP2, JPC, JPEG, JPG, JPX, K, K25, KDC, LABEL, M, M2V, M4V, MAC, MAP, MAT, MATTE, MIFF, MNG, MONO, MOV, MP4, MPC, MPEG, MPG, MRW, MSL, MSVG, MTV, MVG, NEF, NULL, O, 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, PNG24, PNG32, PNG8, PNM, PPM, PREVIEW, PS, PS2, PS3, PSB, PSD, PTIF, PWP, R, RADIAL-GRADIENT, RAF, RAS, RGB, RGBA, RGBO, RLA, RLE, SCR, SCT, SFW, SGI, SHTML, SR2, SRF, STEGANO, SUN, SVG, SVGZ, TEXT, TGA, THUMBNAIL, TIFF, TIFF64, TILE, TIM, TTC, TTF, TXT, UBRL, UIL, UYVY, VDA, VICAR, VID, VIFF, VST, WBMP, WMF, WMV, WMZ, WPG, X, X3F, XBM, XC, XCF, XPM, XPS, XV, XWD, Y, YCbCr, YCbCrA, YUV
之后（imagick + gmagick 都启用）：
imagick module enabled
imagick module version 3.0.1
imagick classes Imagick, ImagickDraw, ImagickPixel, ImagickPixelIterator
ImageMagick version ImageMagick 6.6.9-7 2012-04-30 Q16 http://www.imagemagick.org
ImageMagick copyright Copyright (C) 1999-2011 ImageMagick Studio LLC
ImageMagick release date 2012-04-30
ImageMagick number of supported formats: 0
ImageMagick supported formats no value