我正在尝试在同一台计算机上同时启用imagick和gmagick扩展（ubuntu 12.04-尽管在旧版本中存在相同问题）。
我有一个正在运行的ImageMagick / Imagick安装-具有206种受支持的格式...直到启用gmagick模块之前-然后它报告支持0。通过以下响应，我得以隔离问题：https://stackoverflow.com/a/11350707/543871。启用gmagick后，graphicsmagick可以很好地工作，而以imagemagick为代价。有任何想法吗？这是启用gmagick之前和之后phpinfo的输出：
BEFORE（仅安装了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
AFTER（同时启用了imagick和gmagick）：
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
根据PHP维护者的说法，“由于某些符号相似，因此Imagick和Gmagick不能真正在同一环境中共存。” （请参见https://bugs.php.net/bug.php?id=59285。）