php5.6.30环境报错Call to undefined function ImageCreate()  编译安装 gd库发现php5.6.30没有加载gd库[root@cn_vs_web04:/usr/local/php]# php -i |grep configure
Configure Command =>  './configure'  '--prefix=/usr/local/php-5.6.30_fpm' '--with-openssl=/usr/local/lab/openssl' '--with-libxml-dir=/usr' '--with-zlib-dir=/usr/local/lab/zlib-1.2.8' '--with-bz2' '--enable-calendar' '--with-curl=/usr/local/lab/curl-7.36.0' '--enable-dba' '--enable-exif' '--enable-ftp' '--with-jpeg-dir=/usr/local/lab/libjpeg-6b' '--with-png-dir=/usr/local/lab/libpng-1.6.10' '--with-freetype-dir=/usr/local/lab/freetype-2.5.4' '--with-gettext' '--enable-mbstring' '--with-ldap=/usr/local/openldap-2.4.23' '--with-mcrypt=/usr/local/lab/libmcrypt-2.5.8' '--with-mhash=/usr/local/lab/mhash-0.9.9.9' '--with-mysql=mysqlnd' '--with-mysqli=mysqlnd' '--with-pdo-mysql=mysqlnd' '--with-unixODBC=/usr/local/lab/unixODBC-2.3.2' '--with-pdo-dblib=/usr/local/lab/freetds-0.92' '--enable-zip' '--with-iconv-dir=/usr/local/lab/libiconv-1.14' '--with-fpm-user=apache' '--with-fpm-group=users' '--enable-fpm' '--with-xmlrpc' '--enable-soap' '--enable-mbregex' '--enable-opcache' '--enable-inline-optimization' '--enable-xml' '--enable-sockets' '--disable-debug

解决办法:编译的时候没有把gd库编译进去，需要再次加进去，还好gd库是扩展库，不需要重新编译php整个程序1.下载php5.6.30源码
php源码下载站
https://www.php.net/releases/源码下载很慢，通过阿里云国外下载(几秒钟)，然后传到国内阿里云的服务器速度较快直接国内阿里云下载也很慢

获取源码解压
# wget https://www.php.net/distributions/php-5.6.30.tar.gz
# tar -zxf php-5.6.30.tar.gz
# cd php-5.6.30/ext/gd在源码目录执行phpize
# /usr/local/php/bin/phpize# 重新编译
# ./configure --with-php-config=/usr/local/php/bin/php-config --with-gd
# make && make installBuild complete.
Don't forget to run 'make test'.

Installing shared extensions:     /usr/local/php-5.6.30_fpm/lib/php/extensions/no-debug-non-zts-20131226/
Installing header files:           /usr/local/php-5.6.30_fpm/include/php/# 将扩展库加入到扩展库文件夹中cp /usr/local/php-5.6.30_fpm/lib/php/extensions/no-debug-non-zts-20131226/ /usr/local/php/lib/php/extensions编辑php.ini加入gd.so扩展库# vim /usr/local/php/php.ini
extension_dir=/usr/local/php/lib/php/extensions
extension=gd.so# 重新启动php
/etc/init.d/php-fpm restart# 验证
[root@cn_vs_web04:/usr/local/lab]# php -m|grep gd
gd[root@cn_vs_web04:/usr/local/lab]# cat /etc/init.d/php-fpm
#! /bin/sh### BEGIN INIT INFO
# Provides:          php-fpm
# Required-Start:    $remote_fs $network
# Required-Stop:     $remote_fs $network
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts php-fpm
# Description:       starts the PHP FastCGI Process Manager daemon
### END INIT INFOprefix=/usr/local/php
exec_prefix=${prefix}php_fpm_BIN=${exec_prefix}/sbin/php-fpm
php_fpm_CONF=${prefix}/etc/php-fpm.conf
php_fpm_PID=${prefix}/var/run/php-fpm.pidphp_opts="--fpm-config $php_fpm_CONF --pid $php_fpm_PID"wait_for_pid () {try=0while test $try -lt 35 ; docase "$1" in'created')if [ -f "$2" ] ; thentry=''breakfi;;'removed')if [ ! -f "$2" ] ; thentry=''breakfi;;esacecho -n .try=`expr $try + 1`sleep 1done}case "$1" instart)echo -n "Starting php-fpm "$php_fpm_BIN --daemonize $php_optsif [ "$?" != 0 ] ; thenecho " failed"exit 1fiwait_for_pid created $php_fpm_PIDif [ -n "$try" ] ; thenecho " failed"exit 1elseecho " done"fi;;stop)echo -n "Gracefully shutting down php-fpm "if [ ! -r $php_fpm_PID ] ; thenecho "warning, no pid file found - php-fpm is not running ?"exit 1fikill -QUIT `cat $php_fpm_PID`wait_for_pid removed $php_fpm_PIDif [ -n "$try" ] ; thenecho " failed. Use force-quit"exit 1elseecho " done"fi;;force-quit)echo -n "Terminating php-fpm "if [ ! -r $php_fpm_PID ] ; thenecho "warning, no pid file found - php-fpm is not running ?"exit 1fikill -TERM `cat $php_fpm_PID`wait_for_pid removed $php_fpm_PIDif [ -n "$try" ] ; thenecho " failed"exit 1elseecho " done"fi;;restart)$0 stop$0 start;;reload)echo -n "Reload service php-fpm "if [ ! -r $php_fpm_PID ] ; thenecho "warning, no pid file found - php-fpm is not running ?"exit 1fikill -USR2 `cat $php_fpm_PID`echo " done";;*)echo "Usage: $0 {start|stop|force-quit|restart|reload}"exit 1;;esac