我试图通过 pecl 安装 APCu。安装很顺利。但是，PHP 无法加载 APCu。
这是错误消息：
PHP 警告：PHP 启动：无法加载动态库 '/usr/local/Cellar/php55/5.5.30/lib/php/extensions/no-debug-non-zts-20121212/apcu.so' - dlopen(/usr /local/Cellar/php55/5.5.30/lib/php/extensions/no-debug-non-zts-20121212/apcu.so, 9)：找不到符号：_zend_signal_globals\n 引用自：/usr/local/Cellar /php55/5.5.30/lib/php/extensions/no-debug-non-zts-20121212/apcu.so\n 预期在：平面命名空间\n 在 /usr/local/Cellar/php55/5.5.30/lib /php/extensions/no-debug-non-zts-20121212/apcu.so 在第 0 行的未知中
php 配置：
用法：/usr/local/bin/php-config [OPTION] 选项：--prefix [/usr/local/Cellar/php55/5.5.30] --includes [-I/usr/local/Cellar/php55/5.5 .30/include/php -I/usr/local/Cellar/php55/5.5.30/include/php/main -I/usr/local/Cellar/php55/5.5.30/include/php/TSRM -I/usr /local/Cellar/php55/5.5.30/include/php/Zend -I/usr/local/Cellar/php55/5.5.30/include/php/ext -I/usr/local/Cellar/php55/5.5.30 /include/php/ext/date/lib] --ldflags [ -L/usr/local/Cellar/libxml2/2.9.2/lib -L/usr/local/opt/openssl/lib -L/usr/local/ opt/jpeg/lib -L/usr/local/opt/libpng/lib -L/usr/local/Cellar/freetype/2。6_1/lib -L/usr/local/opt/gettext/lib -L/usr/local/opt/unixodbc/lib] --libs [ -lcrypto -lssl -lcrypto -lz -lexslt -lresolv -ledit -lncurses -lldap -llber -liconv -liconv -lintl -lpng -lz -ljpeg -lcrypto -lssl -lcrypto -lcurl -lbz2 -lz -lcrypto -lssl -lcrypto -lm -lxml2 -lz -liconv -lm -lgssapi_krb5 -lkrb5 -lk5crypto -lcom_err -lcurl -lxml2 -lz -liconv -lm -lfreetype -lodbc -lodbc -lxml2 -lz -liconv -lm -lxml2 -lz -liconv -lm -lxml2 -lz -liconv -lm -lxml2 -lz -liconv -lm -lxml2 -lz -liconv -lm -lxml2 -lz -liconv -lm -lxml2 -lz -liconv -lm -lxml2 -lxslt ] --extension-dir [/usr/local/Cellar/php55/5.5.30/lib/php/ extensions/no-debug-non-zts-20121212] --include-dir [/usr/local/Cellar/php55/5.5.30/include/php] --man-dir [/usr/local/Cellar/php55/ 5.5.30/share/man] --php-binary [/usr/local/Cellar/php55/5.5.30/bin/php] --php-sapis [apache2handler cli fpm cgi] --configure-options [--prefix= /usr/local/Cellar/php55/5.5.30 --localstatedir=/usr/local/var --sysconfdir=/usr/local/etc/php/5.5 --with-config-file-path=/usr/local /etc/php/5.5 --with-config-file-scan-dir=/usr/local/etc/php/5.5/conf.d --mandir=/usr/local/Cellar/php55/5.5。30/share/man --enable-bcmath --enable-calendar --enable-dba --enable-exif --enable-ftp --enable-gd-native-ttf --enable-mbregex --enable-mbstring - -enable-shmop --enable-soap --enable-sockets --enable-sysvmsg --enable-sysvsem --enable-sysvshm --enable-wddx --enable-zip --with-freetype-dir=/usr/ local/opt/freetype --with-gd --with-gettext=/usr/local/opt/gettext --with-iconv-dir=/usr --with-icu-dir=/usr/local/opt/icu4c --with-jpeg-dir=/usr/local/opt/jpeg --with-kerberos=/usr --with-libedit --with-mhash --with-ndbm=/usr --with-pdo-odbc= unixODBC,/usr/local/opt/unixodbc --with-png-dir=/usr/local/opt/libpng --with-unixODBC=/usr/local/opt/unixodbc --with-xmlrpc --with-zlib =/usr --with-readline=/usr/local/opt/readline --without-gmp --without-snmp --with-libxml-dir=/usr/local/opt/libxml2 --with-apxs2=/ usr/sbin/apxs --libexecdir=/usr/local/Cellar/php55/5.5。30/libexec --with-bz2=/usr --disable-debug --with-openssl=/usr/local/opt/openssl --enable-fpm --with-fpm-user=_www --with-fpm- group=_www --with-curl --with-xsl=/usr --with-ldap --with-ldap-sasl=/usr --with-mysql-sock=/tmp/mysql.sock --with-mysqli =mysqlnd --with-mysql=mysqlnd --with-pdo-mysql=mysqlnd --disable-opcache --enable-pcntl --without-pear --enable-dtrace --enable-zend-signals] --version [ 5.5.30] --vernum [50530]袜子 --with-mysqli=mysqlnd --with-mysql=mysqlnd --with-pdo-mysql=mysqlnd --disable-opcache --enable-pcntl --without-pear --enable-dtrace --enable-zend-信号] --version [5.5.30] --vernum [50530]袜子 --with-mysqli=mysqlnd --with-mysql=mysqlnd --with-pdo-mysql=mysqlnd --disable-opcache --enable-pcntl --without-pear --enable-dtrace --enable-zend-信号] --version [5.5.30] --vernum [50530]
操作系统：OS X 10.11.3