问题：
Fatal error: Call to undefined function Think\imagettftext() in /var/www/webreg/ThinkPHP/Library/Think/Verify.class.php on line 143
查看phpinfo()后得知，gd中没有freetype的支持
解决：
首先安装freestyle,php-gd
然后重新配置编译参数如下：
1.到【你的php源码解压目录】/ext/gd
make clean./configure –with-mysql –prefix=/homewww/php –with-apxs2=/homewww/httpd/bin/apxs –with-config-file-path=/homewww/php/conf –with-gd –enable-exif –enable-gd-native-ttf –enable-inline-optimization –with-zlib –with-png-dir –with-jpeg-dir=/usr/local/jpeg –with-freetype-dir=/usr/local/lib –with-ttf –enable-mbstring –with-gettext –enable-gd-jis-convmake && make install2. 成功后提示如下，Installing shared extensions:/homewww/php/lib/php/extensions/no-debug-zts-20100525/这样新编译的gd.so会在此路径下，需要cp到你的php.ini中配置的extension_dir的目录下即可。3.以apache为例，重启 apache，service httpd restart 4.另外，也有可能是libjpeg libpng zlib这些引起，按提示安装后编译进去即可。 这些依赖库包括freetype ,php-gd可通过yum install方式安装
好久没记录东西了，希望能帮到后来遇到问题的朋友。。。
—————-附上完整php编译参数：——————————————————————————————————————————————
./configure \–prefix=/homewww/php \–with-apxs2=/homewww/httpd/bin/apxs \–with-config-file-path=/homewww/php/conf \–with-mysql \–with-mysqli \–with-mysql-sock \–enable-pdo \–with-pdo-mysql \–with-gd \–with-iconv \–with-zlib \–enable-xml \–enable-bcmath \–enable-shmop \–enable-sysvsem \–enable-inline-optimization \–enable-mbregex \–enable-mbstring \–enable-gd-native-ttf \–with-openssl \–enable-pcntl \–enable-sockets \–with-xmlrpc \–enable-zip \–enable-soap \–without-pear \–with-gettext \–enable-session \–with-jpeg-dir=/usr/local/jpeg \–with-freetype-dir \–with-png-dir=/usr/local/pngp \–with-bz2 \
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