Build php 7.0 manually on macOS High Sierra
Install dependencies using homebrew
brew install autoconf automake gd icu4c libtool mcrypt openssl
Run configure script with these options
./configure \
--prefix=/opt/php70 \
--with-config-file-path=/opt/php70/etc \
--enable-cli \
--enable-gd-native-ttf \
--enable-gd-jis-conv \
--enable-exif \
--enable-bcmath \
--enable-mbstring \
--enable-sockets \
--enable-zip \
--enable-filter \
--enable-mysqlnd \
--enable-opcache \
--enable-simplexml \
--enable-xmlreader \
--enable-xmlwriter \
--with-iconv=/usr \
--with-libxml-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr \
--with-freetype-dir=$(brew --prefix freetype) \
--with-jpeg-dir=$(brew --prefix gd) \
--with-png-dir=$(brew --prefix gd) \
--with-webp-dir=$(brew --prefix gd) \
--with-mcrypt=$(brew --prefix mcrypt) \
--with-openssl=$(brew --prefix openssl) \
--with-bz2 \
--with-curl \
--with-gd \
--with-imap-ssl \
--with-pear \
--with-pdo-mysql \
--with-pdo-sqlite \
--with-pdo-pgsql \
--with-xmlrpc \
--with-xsl \
--with-zlib \
--with-libedit