The following explains how to install PHP 7.0, from source, without uninstalling your current PHP. I used this in a development and continuous integration machine, so i can test both PHP 5.6 or PHP 7.x, ensuring our apps are php7 ready. As i am using Apache + Mod_php for PHP 5, i will use FPM for PHP 7 so nothing is fkdup in the apache+php5 realm.

Step by step (Linux, CentOS 6.x):

  • Download PHP 7.0 tar.gz source
  • Expand (tar zxvf php-7.0.0.tar.gz)
  • Inside the new source folder type “./configure –help” : this will show all the configuration options such as:
    `configure' configures this package to adapt to many kinds of systems.
    Usage: ./configure [OPTION]... [VAR=VALUE]...
    To assign environment variables (e.g., CC, CFLAGS...), specify them as
    VAR=VALUE.  See below for descriptions of some of the useful variables.
    Defaults for the options are specified in brackets.
      -h, --help              display this help and exit
          --help=short        display options specific to this package
          --help=recursive    display the short help of all the included packages
      -V, --version           display version information and exit
      -q, --quiet, --silent   do not print `checking ...' messages
          --cache-file=FILE   cache test results in FILE [disabled]
      -C, --config-cache      alias for `--cache-file=config.cache'
      -n, --no-create         do not create output files
          --srcdir=DIR        find the sources in DIR [configure dir or `..']
    Installation directories:
      --prefix=PREFIX         install architecture-independent files in PREFIX
      --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
    By default, `make install' will install all the files in
    `/usr/local/bin', `/usr/local/lib' etc.  You can specify
    an installation prefix other than `/usr/local' using `--prefix',
    for instance `--prefix=$HOME'.
    For better control, use the options below.
    Fine tuning of the installation directories:
      --bindir=DIR            user executables [EPREFIX/bin]
      --sbindir=DIR           system admin executables [EPREFIX/sbin]
      --libexecdir=DIR        program executables [EPREFIX/libexec]
      --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
      --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
      --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
      --libdir=DIR            object code libraries [EPREFIX/lib]
      --includedir=DIR        C header files [PREFIX/include]
      --oldincludedir=DIR     C header files for non-gcc [/usr/include]
      --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
      --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]
      --infodir=DIR           info documentation [DATAROOTDIR/info]
      --localedir=DIR         locale-dependent data [DATAROOTDIR/locale]
      --mandir=DIR            man documentation [DATAROOTDIR/man]
      --docdir=DIR            documentation root [DATAROOTDIR/doc/PACKAGE]
      --htmldir=DIR           html documentation [DOCDIR]
      --dvidir=DIR            dvi documentation [DOCDIR]
      --pdfdir=DIR            pdf documentation [DOCDIR]
      --psdir=DIR             ps documentation [DOCDIR]
    System types:
      --build=BUILD     configure for building on BUILD [guessed]
      --host=HOST       cross-compile to build programs to run on HOST [BUILD]
      --target=TARGET   configure for building compilers for TARGET [HOST]
    Optional Features and Packages:
      --disable-option-checking  ignore unrecognized --enable/--with options
      --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
      --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
      --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
      --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
      --with-libdir=NAME      Look for libraries in .../NAME rather than .../lib
      --disable-rpath         Disable passing additional runtime library
                              search paths
      --enable-re2c-cgoto     Enable -g flag to re2c to use computed goto gcc extension
                              whether to enable GCC global register variables
    SAPI modules:
      --with-apxs2=FILE       Build shared Apache 2.0 Handler module. FILE is the optional
                              pathname to the Apache apxs tool apxs
      --disable-cli           Disable building CLI version of PHP
                              (this forces --without-pear)
      --enable-embed=TYPE     EXPERIMENTAL: Enable building of embedded SAPI library
                              TYPE is either 'shared' or 'static'. TYPE=shared
      --enable-fpm            Enable building of the fpm SAPI executable
      --with-fpm-user=USER    Set the user for php-fpm to run as. (default: nobody)
      --with-fpm-group=GRP    Set the group for php-fpm to run as. For a system user, this
                              should usually be set to match the fpm username (default: nobody)
      --with-fpm-systemd      Activate systemd integration
      --with-fpm-acl          Use POSIX Access Control Lists
      --with-litespeed        Build PHP as litespeed module
      --enable-phpdbg            Build phpdbg
      --enable-phpdbg-webhelper  Build phpdbg web SAPI support
      --enable-phpdbg-debug      Build phpdbg in debug mode
      --disable-cgi           Disable building CGI version of PHP
    General settings:
      --enable-gcov           Enable GCOV code coverage (requires LTP) - FOR DEVELOPERS ONLY!!
      --enable-debug          Compile with debugging symbols
      --with-layout=TYPE      Set how installed files will be laid out.  Type can
                              be either PHP or GNU [PHP]
                              Set the path in which to look for php.ini [PREFIX/lib]
                              Set the path where to scan for configuration files
      --enable-sigchild       Enable PHP's own SIGCHLD handler
      --enable-libgcc         Enable explicitly linking against libgcc
      --disable-short-tags    Disable the short-form = 0.9.8)
      --with-kerberos=DIR     OPENSSL: Include Kerberos support
      --with-system-ciphers   OPENSSL: Use system default cipher list instead of hardcoded value
      --with-pcre-regex=DIR   Include Perl Compatible Regular Expressions support.
                              DIR is the PCRE install prefix BUNDLED
      --without-sqlite3=DIR   Do not include SQLite3 support. DIR is the prefix to
                              SQLite3 installation directory.
      --with-zlib=DIR         Include ZLIB support (requires zlib >= 1.0.9)
      --with-zlib-dir=   Define the location of zlib install directory
      --enable-bcmath         Enable bc style precision math functions
      --with-bz2=DIR          Include BZip2 support
      --enable-calendar       Enable support for calendar conversion
      --disable-ctype         Disable ctype functions
      --with-curl=DIR         Include cURL support
      --enable-dba            Build DBA with bundled modules. To build shared DBA
                              extension use --enable-dba=shared
      --with-qdbm=DIR         DBA: QDBM support
      --with-gdbm=DIR         DBA: GDBM support
      --with-ndbm=DIR         DBA: NDBM support
      --with-db4=DIR          DBA: Oracle Berkeley DB 4.x or 5.x support
      --with-db3=DIR          DBA: Oracle Berkeley DB 3.x support
      --with-db2=DIR          DBA: Oracle Berkeley DB 2.x support
      --with-db1=DIR          DBA: Oracle Berkeley DB 1.x support/emulation
      --with-dbm=DIR          DBA: DBM support
      --with-tcadb=DIR        DBA: Tokyo Cabinet abstract DB support
      --without-cdb=DIR       DBA: CDB support (bundled)
      --disable-inifile       DBA: INI support (bundled)
      --disable-flatfile      DBA: FlatFile support (bundled)
      --disable-dom           Disable DOM support
      --with-libxml-dir=DIR   DOM: libxml2 install prefix
      --with-enchant=DIR      Include enchant support.
                              GNU Aspell version 1.1.3 or higher required.
      --enable-exif           Enable EXIF (metadata from images) support
      --disable-fileinfo      Disable fileinfo support
      --disable-filter        Disable input filter support
      --with-pcre-dir         FILTER: pcre install prefix
      --enable-ftp            Enable FTP support
      --with-openssl-dir=DIR  FTP: openssl install prefix
      --with-gd=DIR           Include GD support.  DIR is the GD library base
                              install directory BUNDLED
      --with-webp-dir=DIR      GD: Set the path to libwebp install prefix
      --with-jpeg-dir=DIR     GD: Set the path to libjpeg install prefix
      --with-png-dir=DIR      GD: Set the path to libpng install prefix
      --with-zlib-dir=DIR     GD: Set the path to libz install prefix
      --with-xpm-dir=DIR      GD: Set the path to libXpm install prefix
      --with-freetype-dir=DIR GD: Set the path to FreeType 2 install prefix
      --enable-gd-native-ttf  GD: Enable TrueType string function
      --enable-gd-jis-conv    GD: Enable JIS-mapped Japanese font support
      --with-gettext=DIR      Include GNU gettext support
      --with-gmp=DIR          Include GNU MP support
      --with-mhash=DIR        Include mhash support
      --disable-hash          Disable hash support
      --without-iconv=DIR     Exclude iconv support
      --with-imap=DIR         Include IMAP support. DIR is the c-client install prefix
      --with-kerberos=DIR     IMAP: Include Kerberos support. DIR is the Kerberos install prefix
      --with-imap-ssl=DIR     IMAP: Include SSL support. DIR is the OpenSSL install prefix
      --with-interbase=DIR    Include Firebird support.  DIR is the Firebird base
                              install directory /opt/firebird
      --enable-intl           Enable internationalization support
      --with-icu-dir=DIR      Specify where ICU libraries and headers can be found
      --disable-json          Disable JavaScript Object Serialization support
      --with-ldap=DIR         Include LDAP support
      --with-ldap-sasl=DIR    LDAP: Include Cyrus SASL support
      --enable-mbstring       Enable multibyte string support
      --disable-mbregex       MBSTRING: Disable multibyte regex support
                              MBSTRING: Disable multibyte regex backtrack check
      --with-libmbfl=DIR      MBSTRING: Use external libmbfl.  DIR is the libmbfl base
                              install directory BUNDLED
      --with-onig=DIR         MBSTRING: Use external oniguruma. DIR is the oniguruma install prefix.
                              If DIR is not set, the bundled oniguruma will be used
      --with-mcrypt=DIR       Include mcrypt support
      --with-mysqli=FILE      Include MySQLi support.  FILE is the path
                              to mysql_config.  If no value or mysqlnd is passed
                              as FILE, the MySQL native driver will be used
                              MYSQLi: Enable embedded support
                              Note: Does not work with MySQL native driver!
                              MySQLi/PDO_MYSQL: Location of the MySQL unix socket pointer.
                              If unspecified, the default locations are searched
      --with-oci8=DIR         Include Oracle Database OCI8 support. DIR defaults to $ORACLE_HOME.
                              Use --with-oci8=instantclient,/path/to/instant/client/lib
                              to use an Oracle Instant Client installation
      --with-odbcver=HEX      Force support for the passed ODBC version. A hex number is expected, default 0x0300.
                                 Use the special value of 0 to prevent an explicit ODBCVER to be defined.
      --with-adabas=DIR       Include Adabas D support /usr/local
      --with-sapdb=DIR        Include SAP DB support /usr/local
      --with-solid=DIR        Include Solid support /usr/local/solid
      --with-ibm-db2=DIR      Include IBM DB2 support /home/db2inst1/sqllib
      --with-ODBCRouter=DIR   Include support /usr
      --with-empress=DIR      Include Empress support \$EMPRESSPATH
                              (Empress Version >= 8.60 required)
                              Include Empress Local Access support \$EMPRESSPATH
                              (Empress Version >= 8.60 required)
      --with-birdstep=DIR     Include Birdstep support /usr/local/birdstep
      --with-custom-odbc=DIR  Include user defined ODBC support. DIR is ODBC install base
                              directory /usr/local. Make sure to define CUSTOM_ODBC_LIBS and
                              have some odbc.h in your include dirs. f.e. you should define
                              following for Sybase SQL Anywhere 5.5.00 on QNX, prior to
                              running this configure script:
                                CPPFLAGS=\"-DODBC_QNX -DSQLANY_BUG\"
                                CUSTOM_ODBC_LIBS=\"-ldblib -lodbc\"
      --with-iodbc=DIR        Include iODBC support /usr/local
      --with-esoob=DIR        Include Easysoft OOB support /usr/local/easysoft/oob/client
      --with-unixODBC=DIR     Include unixODBC support /usr/local
      --with-dbmaker=DIR      Include DBMaker support
      --disable-opcache       Disable Zend OPcache support
      --disable-opcache-file  Disable file based caching
                              Disable copying PHP CODE pages into HUGE PAGES
      --enable-pcntl          Enable pcntl support (CLI/CGI only)
      --disable-pdo           Disable PHP Data Objects support
      --with-pdo-dblib=DIR    PDO: DBLIB-DB support.  DIR is the FreeTDS home directory
      --with-pdo-firebird=DIR PDO: Firebird support.  DIR is the Firebird base
                              install directory /opt/firebird
      --with-pdo-mysql=DIR    PDO: MySQL support. DIR is the MySQL base directory
                              If no value or mysqlnd is passed as DIR, the
                              MySQL native driver will be used
      --with-zlib-dir=DIR     PDO_MySQL: Set the path to libz install prefix
      --with-pdo-oci=DIR      PDO: Oracle OCI support. DIR defaults to \$ORACLE_HOME.
                              Use --with-pdo-oci=instantclient,prefix,version
                              for an Oracle Instant Client SDK.
                              For example on Linux with 11.2 RPMs use:
                              With 10.2 RPMs use:
                              PDO: Support for 'flavour' ODBC driver.
    			  include and lib dirs are looked for under 'dir'.
    			  'flavour' can be one of:  ibm-db2, iODBC, unixODBC, generic
    			  If ',dir' part is omitted, default for the flavour
    			  you have selected will be used. e.g.:
    			  will check for unixODBC under /usr/local. You may attempt
    			  to use an otherwise unsupported driver using the \"generic\"
    			  flavour.  The syntax for generic ODBC support is:
    			  When built as 'shared' the extension filename is always
      --with-pdo-pgsql=DIR    PDO: PostgreSQL support.  DIR is the PostgreSQL base
                              install directory or the path to pg_config
                              PDO: sqlite 3 support.  DIR is the sqlite base
                              install directory BUNDLED
      --with-pgsql=DIR        Include PostgreSQL support.  DIR is the PostgreSQL
                              base install directory or the path to pg_config
      --disable-phar          Disable phar support
      --disable-posix         Disable POSIX-like functions
      --with-pspell=DIR       Include PSPELL support.
                              GNU Aspell version 0.50.0 or higher required
      --with-libedit=DIR      Include libedit readline replacement (CLI/CGI only)
      --with-readline=DIR     Include readline support (CLI/CGI only)
      --with-recode=DIR       Include recode support
      --disable-session       Disable session support
      --with-mm=DIR           SESSION: Include mm support for session storage
      --enable-shmop          Enable shmop support
      --disable-simplexml     Disable SimpleXML support
      --with-libxml-dir=DIR   SimpleXML: libxml2 install prefix
      --with-snmp=DIR         Include SNMP support
      --with-openssl-dir=DIR  SNMP: openssl install prefix
      --enable-soap           Enable SOAP support
      --with-libxml-dir=DIR   SOAP: libxml2 install prefix
      --enable-sockets        Enable sockets support
      --enable-sysvmsg        Enable sysvmsg support
      --enable-sysvsem        Enable System V semaphore support
      --enable-sysvshm        Enable the System V shared memory support
      --with-tidy=DIR         Include TIDY support
      --disable-tokenizer     Disable tokenizer support
      --enable-wddx           Enable WDDX support
      --with-libxml-dir=DIR   WDDX: libxml2 install prefix
      --with-libexpat-dir=DIR WDDX: libexpat dir for XMLRPC-EPI (deprecated)
      --disable-xml           Disable XML support
      --with-libxml-dir=DIR   XML: libxml2 install prefix
      --with-libexpat-dir=DIR XML: libexpat install prefix (deprecated)
      --disable-xmlreader     Disable XMLReader support
      --with-libxml-dir=DIR   XMLReader: libxml2 install prefix
      --with-xmlrpc=DIR       Include XMLRPC-EPI support
      --with-libxml-dir=DIR   XMLRPC-EPI: libxml2 install prefix
      --with-libexpat-dir=DIR XMLRPC-EPI: libexpat dir for XMLRPC-EPI (deprecated)
      --with-iconv-dir=DIR    XMLRPC-EPI: iconv dir for XMLRPC-EPI
      --disable-xmlwriter     Disable XMLWriter support
      --with-libxml-dir=DIR   XMLWriter: libxml2 install prefix
      --with-xsl=DIR          Include XSL support.  DIR is the libxslt base
                              install directory (libxslt >= 1.1.0 required)
      --enable-zip            Include Zip read/write support
      --with-zlib-dir=DIR     ZIP: Set the path to libz install prefix
      --with-pcre-dir         ZIP: pcre install prefix
      --with-libzip=DIR       ZIP: use libzip
      --enable-mysqlnd        Enable mysqlnd explicitly, will be done implicitly
                              when required by other extensions
                              Disable support for the MySQL compressed protocol in mysqlnd
      --with-zlib-dir=DIR     mysqlnd: Set the path to libz install prefix
      --with-pear=DIR         Install PEAR in DIR [PREFIX/lib/php]
      --without-pear          Do not install PEAR
      --enable-maintainer-zts Enable thread safety - for code maintainers only!!
                              If building zend_execute.lo fails, try this switch
      --enable-zend-signals   Use zend signal handling
                              Use GNU Pth
      --with-tsrm-st          Use SGI's State Threads
      --with-tsrm-pthreads    Use POSIX threads (default)
      --enable-shared=PKGS    Build shared libraries default=yes
      --enable-static=PKGS    Build static libraries default=yes
                              Optimize for fast installation default=yes
      --with-gnu-ld           Assume the C compiler uses GNU ld default=no
      --disable-libtool-lock  Avoid locking (might break parallel builds)
      --with-pic              Try to use only PIC/non-PIC objects default=use both
      --with-tags=TAGS        Include additional configurations automatic
    Some influential environment variables:
      CC          C compiler command
      CFLAGS      C compiler flags
      LDFLAGS     linker flags, e.g. -L if you have libraries in a
                  nonstandard directory 
      LIBS        libraries to pass to the linker, e.g. -l
      CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I if
                  you have headers in a nonstandard directory 
      CPP         C preprocessor
      YACC        The `Yet Another Compiler Compiler' implementation to use.
                  Defaults to the first program found out of: `bison -y', `byacc',
      YFLAGS      The list of arguments that will be passed by default to $YACC.
                  This script will default YFLAGS to the empty string to avoid a
                  default value of `-d' given by some make applications.
      CXX         C++ compiler command
      CXXFLAGS    C++ compiler flags
      CXXCPP      C++ preprocessor
    Use these variables to override the choices made by `configure' or to help
    it to find libraries and programs with nonstandard names/locations.
    Report bugs to the package provider.
  • Run configure. In my case, i’ve used the following:
    ./configure --prefix=/opt/php7 --with-gd --enable-fpm --enable-mbstring --with-mysqli --with-curl --with-zlib --enable-zip

    (choose your options from the list above and install dependencies using yum or apt or whatever – do not forget the –prefix=… part!).

  • After this, the classic
    make test
    make install
  • Run a quick check
    /opt/php7/bin/php -v

    . This should return something like

    PHP 7.0.0 (cli) (built: Dec  4 2015 16:08:37) ( NTS )
    Copyright (c) 1997-2015 The PHP Group
    Zend Engine v3.0.0, Copyright (c) 1998-2015 Zend Technologies

and next?

Next, setup PHP-FPM, change configuration files in apache (mod_proxy, mod_proxy_fcgi, etc – more at’s php-fpm page) and that’s it!

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