如下的这个错误怎么解决？

Question

JpGraph Error This PHP installation is not configured with the GD library. Please recompile PHP with GD support to run JpGraph. (Neither function imagetypes() nor imagecreatefromstring() does exist) 

Answer 1

提示错误大意是:JPgGragh提示你:你安装php时,没有同时配置和编译你的GD库,你需要重新编辑你的PHP,以获得对GD库的支持
同时你函数imagetypes()和imagecreatefromstring()不存在,这有可能是你php.ini没有打开GD库的支持

同时附上编译PHP(with gd)时需加的参数

PHP4-Server:
./configure --prefix=/usr/local/php --with-apxs2=/usr/local/apache2/bin/apxs --with-mysql --with-config-file-path=/etc --with-gd --enable-gd-native-ttf --enable-gd-jis-conv --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --enable-xml --enable-mbstring

PHP4-Max:
./configure --prefix=/usr/local/php --with-apxs2=/usr/local/apache/bin/apxs --mandir=/usr/share/man --with-mysql=/usr/local/mysql --with-config-file-path=/usr/local/php/etc --with-openssl=/usr/local/openssl-0.9.7e --with-gd --enable-gd-native-ttf --enable-gd-jis-conv --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --with-bz2 --with-inifile --with-hyperwave --enable-xml --enable-track-vars --enable-dba --enable-dbase --enable-filepro --enable-ftp --enable-versioning --enable-memory-limit --enable-calendar --enable-session --enable-sockets --enable-sysmsg --enable-sysvsem --enable-sysvshm --enable-tokenizer --enable-overload --enable-ctype --enable-sigchild --enable-magic-quotes --enable-roxen-zts --enable-fastcgi --enable-dbx --enable-dio --enable-shmop --enable-mbstring

PHP5-Server:
./configure --prefix=/usr/local/php --with-apxs2=/usr/local/apache2/bin/apxs --with-zlib-dir --with-bz2 --with-tiff-dir --with-libxml-dir --with-gd --with-freetype-dir --with-jpeg-dir --with-png-dir --with-ttf --enable-mbstring --with-mysql=/usr/lib/mysql --with-config-file-path=/etc --disable-ipv6 --enable-gd-native-ttf

PHP5-Standard:
./configure --prefix=/usr/local/php --with-apxs2=/usr/local/apache/bin/apxs --mandir=/usr/share/man --with-openssl=/usr/local/openssl-0.9.7e --with-zlib --with-bz2 --with-tiff-dir --with-libxml-dir --enable-dio --enable-ftp --with-gd --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib-dir --with-bz2-dir --with-ttf --enable-mbstring --with-mysql=/usr/local/mysql --with-config-file-path=/usr/local/php/etc --disable-ipv6 --enable-gd-native-ttf

PHP5-Max:
./configure --prefix=/usr/local/php --with-apxs2=/usr/local/apache/bin/apxs --mandir=/usr/share/man --with-openssl=/usr/local/openssl-0.9.7e --with-zlib --with-bz2 --with-tiff-dir --with-libxml-dir --enable-dio --enable-ftp --with-gd --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib-dir --with-bz2-dir --with-ttf --with-inifile --enable-dba --enable-dbase --enable-filepro --enable-versioning --enable-memory-limit --enable-calendar --enable-sockets --enable-sysvsem --enable-sigchild --enable-magic-quotes --enable-roxen-zts --enable-fastcgi --enable-dbx --enable-shmop --enable-mbstring --with-mysql=/usr/local/mysql --with-config-file-path=/usr/local/php/etc --disable-ipv6 --enable-gd-native-ttf

Answer 2

首先你需要设置Php.ini使php支持GD；
然后配置debian下面的中文字体(有点复杂，需要好好研究研究如何在linux下配置中文字体，windows上无须配置中文字体)，配置好之后修改jpgraph\src\jpg-config.inc。
如果上面能成功配置，统计图就能正常显示中文。