source: general/prog/php.xml@ 6336840d

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;

  <!ENTITY php-download-http "http://us2.php.net/distributions/php-&php-version;.tar.bz2">
  <!ENTITY php-download-ftp  "ftp://ftp.isu.edu.tw/pub/Unix/Web/PHP/distributions/php-&php-version;.tar.bz2">
  <!ENTITY php-md5sum        "d608230c7890b6a0cc5b92e66e866226">
  <!ENTITY php-size          "13 MB">
  <!ENTITY php-buildsize     "357 MB">
  <!ENTITY php-time          "2.4 SBU (additional 2.1 SBU to run the test suite)">
]>

<sect1 id="php" xreflabel="PHP-&php-version;">
  <?dbhtml filename="php.html"?>

  <sect1info>
    <othername>$LastChangedBy$</othername>
    <date>$Date$</date>
  </sect1info>

  <title>PHP-&php-version;</title>

  <indexterm zone="php">
    <primary sortas="a-PHP">PHP</primary>
  </indexterm>

  <sect2 role="package">
    <title>Introduction to PHP</title>

    <para><application>PHP</application> is the PHP Hypertext Preprocessor.
    Primarily used in dynamic web sites, it allows for programming code to be
    directly embedded into the HTML markup.  It is also useful as a
    general purpose scripting language.</para>

    &lfs75_checked;

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>Download (HTTP): <ulink url="&php-download-http;"/></para>
      </listitem>
      <listitem>
        <para>Download (FTP): <ulink url="&php-download-ftp;"/></para>
      </listitem>
      <listitem>
        <para>Download MD5 sum: &php-md5sum;</para>
      </listitem>
      <listitem>
        <para>Download size: &php-size;</para>
      </listitem>
      <listitem>
        <para>Estimated disk space required: &php-buildsize;</para>
      </listitem>
      <listitem>
        <para>Estimated build time: &php-time;</para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">Additional Downloads</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>Pre-built documentation (optional): <ulink
        url="http://www.php.net/download-docs.php"/></para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">PHP Dependencies</bridgehead>

    <bridgehead renderas="sect4">Recommended</bridgehead>
    <para role="recommended">
      <xref linkend="apache"/> and
      <xref linkend="libxml2"/>
    </para>

    <bridgehead renderas="sect4">Optional System Utilities and Libraries</bridgehead>
    <para role="optional"><xref linkend="libxslt"/>,
    <!-- <xref linkend="gamin"/>, -->
    <xref linkend="pcre"/>,
    <xref linkend="aspell"/>,
    <xref linkend="enchant"/>,
    <xref linkend="expat"/> (deprecated alternative to <xref linkend="libxml2"/>),
    <ulink url="http://www.ossp.org/pkg/lib/mm/">OSSP mm</ulink>,
    <ulink url="http://www.net-snmp.org/">Net-SNMP</ulink>,
    <xref linkend="pth"/>,
    <ulink url="http://re2c.org/">re2c</ulink>,
    <ulink url="http://xmlrpc-epi.sourceforge.net/main.php?t=php_about">XMLRPC-EPI</ulink>,
    <ulink url="http://dmalloc.com/">Dmalloc</ulink>, and
    an <xref linkend="server-mail"/> (that provides a
    <command>sendmail</command> command)</para>

    <bridgehead renderas="sect4">Optional Graphics Utilities and Libraries</bridgehead>
    <para role="optional"><xref linkend="libjpeg"/>,
    <xref linkend="libtiff"/>,
    <xref linkend="libpng"/>,
    <xref linkend="libexif"/>,
    <xref linkend="freetype2"/>,
    <xref linkend="x-window-system"/>,
    <ulink url="http://www.fastio.com/">ClibPDF</ulink>,
    <ulink url="https://bitbucket.org/libgd/gd-libgd/downloads">GD</ulink>,
    <ulink url="http://fossies.org/linux/misc/t1lib-5.1.2.tar.gz/">t1lib</ulink>, and
    <ulink url="http://partners.adobe.com/asn/acrobat/forms.jsp">FDF Toolkit</ulink></para>

    <bridgehead renderas="sect4">Optional Web Utilities</bridgehead>
    <para role="optional"><xref linkend="curl"/>,
    <xref linkend="html-tidy"/>,
    <ulink url="http://www.mnogosearch.org/">mnoGoSearch</ulink>,
    <ulink url="http://www.hyperwave.com/">Hyperwave</ulink>,
    <ulink url="http://www.roxen.com/products/webserver/">Roxen WebServer</ulink>,
    <ulink url="http://sourceforge.net/projects/caudium/">Caudium</ulink>, and
    <ulink url="https://wddxnet.codeplex.com/">WDDX</ulink></para>

    <bridgehead renderas="sect4">Optional Data Management Utilities and Libraries</bridgehead>
    <para role="optional"><xref linkend="openldap"/>,
    <!-- <xref linkend="gdbm"/>, -->
    <xref linkend="db"/>,
    <xref linkend="mariadb"/> or <xref linkend="mysql"/>,
    <xref linkend="postgresql"/>,
    <xref linkend="unixodbc"/>,
    <xref linkend="sqlite"/>,
    <ulink url="http://sourceforge.net/projects/qdbm">QDBM</ulink>,
    <ulink url="http://cr.yp.to/cdb.html">cdb</ulink>,
    <ulink url="http://www.hughes.com.au/products/msql/">Mini SQL</ulink>,
    <ulink url="http://www.empress.com/">Empress</ulink>,
    <ulink url="http://www.birdstep.com/">Birdstep</ulink>,
    <ulink url="http://www.dbmaker.com/">DBMaker</ulink>,
    <ulink url="http://www.softwareag.com/">Adabas</ulink>,
    <ulink url="http://www.frontbase.com/">FrontBase</ulink>, and
    <ulink url="http://www.mainstreetsoftworks.com/">Monetra</ulink></para>

    <para><application>PHP</application> also provides support for many
    commercial database tools such as <application>Oracle</application>,
    <application>SAP</application> and
    <application>ODBC Router</application>.</para>

    <bridgehead renderas="sect4">Optional Security/Encryption Utilities and Libraries</bridgehead>
    <para role="optional"><xref linkend="openssl"/>,
    <xref linkend="cyrus-sasl"/>,
    <xref linkend="mitkrb"/>,
    <ulink url="http://mcrypt.sourceforge.net/">libmcrypt</ulink>, and
    <ulink url="http://mhash.sourceforge.net/">mhash</ulink></para>

    <para condition="html" role="usernotes">User Notes:
    <ulink url="&blfs-wiki;/php"/></para>

  </sect2>

  <sect2 role="installation">
    <title>Installation of PHP</title>

    <para>You can use <application>PHP</application> for server-side
    scripting, command-line scripting or client-side GUI applications. This
    book provides instructions for setting up <application>PHP</application>
    for server-side scripting as it is the most common form.</para>

    <note>
      <para><application>PHP</application> has many more
      <command>configure</command> options that will enable support for various
      things. You can use <command>./configure --help</command> to see a full
      list of the available options. Also, use of the
      <ulink url="http://www.php.net/">PHP web site</ulink>
      is highly recommended, as their online docs are very good. An example of
      a <command>configure</command> command that utilizes many of the most
      common dependencies can be found at <ulink
      url="&files-anduin;/php_configure.txt"/>.
      </para>

      <para>If, for whatever reason, you don't have <xref linkend="libxml2"/>
      installed, you need to add <option>--disable-libxml</option> to the
      <command>configure</command> command in the instructions below. Note that
      this will prevent the <command>pear</command> command from being
      built.</para>
    </note>

    <para>Install <application>PHP</application> by
    running the following commands:</para>

<screen><userinput>sed -i -e 's/2.6.5 2.7/&amp; 3.0/' configure &amp;&amp;
./configure --prefix=/usr                \
            --sysconfdir=/etc            \
            --localstatedir=/var         \
            --datadir=/usr/share/php     \
            --mandir=/usr/share/man      \
            --enable-fpm                 \
            --with-fpm-user=apache       \
            --with-fpm-group=apache      \
            --with-config-file-path=/etc \
            --with-zlib                  \
            --enable-bcmath              \
            --with-bz2                   \
            --enable-calendar            \
            --enable-dba=shared          \
            --with-gdbm                  \
            --with-gmp                   \
            --enable-ftp                 \
            --with-gettext               \
            --enable-mbstring            \
            --with-readline              &amp;&amp;
make</userinput></screen>

    <para>To test the results, issue: <command>make test</command>. A few
    tests may fail.</para>

    <para>Now, as the <systemitem class="username">root</systemitem> user:</para>

<!-- dev note: make INSTALL_ROOT=<DESTDIR> install -->

<screen role="root"><userinput>make install                                         &amp;&amp;
install -v -m644 php.ini-production /etc/php.ini     &amp;&amp;
mv -v /etc/php-fpm.conf{.default,}                   &amp;&amp;

install -v -m755 -d /usr/share/doc/php-&php-version; &amp;&amp;
install -v -m644    CODING_STANDARDS EXTENSIONS INSTALL NEWS README* UPGRADING* php.gif \
                    /usr/share/doc/php-&php-version; &amp;&amp;
ln -v -sfn          /usr/lib/php/doc/Archive_Tar/docs/Archive_Tar.txt \
                    /usr/share/doc/php-&php-version; &amp;&amp;
ln -v -sfn          /usr/lib/php/doc/Structures_Graph/docs \
                    /usr/share/doc/php-&php-version;</userinput></screen>

    <para>The pre-built HTML documentation is packaged in two forms: a tarball
    containing many individual files, useful for quick loading into your
    browser, and one large individual file, which is useful for using the
    search utility of your browser. If you downloaded either, or both, of the
    documentation files, issue the following commands as the
    <systemitem class='username'>root</systemitem> user to install them (note
    these instructions assume English docs, modify the tarball names below if
    necessary).</para>

    <para>For the <quote>Single HTML</quote> file:</para>

<screen role="root"><userinput>install -v -m644 ../php_manual_en.html.gz \
    /usr/share/doc/php-&php-version; &amp;&amp;
gunzip -v /usr/share/doc/php-&php-version;/php_manual_en.html.gz</userinput></screen>

    <para>For the <quote>Many HTML files</quote> tarball:</para>

<screen role="root"><userinput>tar -xvf ../php_manual_en.tar.gz \
    -C /usr/share/doc/php-&php-version; --no-same-owner</userinput></screen>

  </sect2>

  <sect2 role="commands">
      <title>Command Explanations</title>

      <para><command>sed -i -e 's/2.6.5 2.7/&amp; 3.0/' configure</command>: Make
      <filename>configure</filename> accept the version 3.0 of 
      <application>Bison</application> as a valid version.</para>
      
      <para><parameter>--with-datadir=/usr/share/php</parameter>: This works
      around a bug in the build machinery, which installs some data to a
      wrong location.</para>

      <para><parameter>--enable-fpm</parameter>: This parameter allows
      building the fastCGI Process Manager.</para>

      <para><parameter>--with-config-file-path=/etc</parameter>: This parameter
      makes <application>PHP</application> look for the
      <filename>php.ini</filename> configuration file in
      <filename class='directory'>/etc</filename>.</para>

      <para><parameter>--with-zlib</parameter>: This parameter adds
      support for <application>Zlib</application> compression.</para>

      <para><parameter>--enable-bcmath</parameter>: Enables
      <command>bc</command> style precision math functions.</para>

      <para><parameter>--with-bz2</parameter>: Adds support for
      <application>Bzip2</application> compression functions.</para>

      <para><parameter>--enable-calendar</parameter>: This parameter
      provides support for calendar conversion.</para>

      <para><parameter>--enable-dba=shared</parameter>: This parameter enables
      support for database (dbm-style) abstraction layer functions.</para>

      <para><parameter>--enable-ftp</parameter>: This parameter
      enables FTP functions.</para>

      <para><parameter>--with-gettext</parameter>: Enables functions
      that use <application>Gettext</application> text translation.</para>

      <para><parameter>--enable-mbstring</parameter>: This parameter
      enables multibyte string support.</para>

      <para><parameter>--with-readline</parameter>: This parameter
      enables command line <application>Readline</application> support.</para>

      <para><option>--disable-libxml</option>: This option
      allows building PHP without <application>libxml2</application>
      installed.</para>

      <para><option>--with-apxs2</option>: Instead of building the fastCGI process
      manager, it is possible to build an <application>apache</application> module.
      This has some performance penalty for heavy loaded servers, but may be easier
      to set up. This switch is incompatible with the
      <parameter>--enable-fpm</parameter> and <parameter>--with-fpm-...</parameter>
      switches.</para>

  </sect2>

  <sect2 role="configuration">
    <title>Configuring PHP</title>

    <sect3 id="php-config">
      <title>Config Files</title>

      <para><filename>/etc/php.ini</filename>,
      <filename>/etc/pear.conf</filename> and
      <filename>/etc/php-fpm.conf</filename></para>

      <indexterm zone="php php-config">
        <primary sortas="e-etc-php.ini">/etc/php.ini</primary>
      </indexterm>

      <indexterm zone="php php-config">
        <primary sortas="e-etc-pear.conf">/etc/pear.conf</primary>
      </indexterm>

      <indexterm zone="php php-config">
        <primary sortas="e-etc-php-fpm.conf">/etc/php-fpm.conf</primary>
      </indexterm>

    </sect3>

    <sect3>
      <title>Configuration Information</title>

      <para>The file used as the default <filename>/etc/php.ini</filename>
      configuration file is recommended by the <application>PHP</application>
      development team. This file modifies the default behavior of
      <application>PHP</application>.  If no <filename>/etc/php.ini</filename>
      is used, all configuration settings fall to the defaults. You should
      review the comments in this file and ensure the changes are acceptable
      in your particular environment.</para>

      <para>You may have noticed the following from the output of the
      <command>make install</command> command:</para>

<screen><computeroutput>You may want to add: /usr/lib/php to your php.ini include_path</computeroutput></screen>

      <para>If desired, add the entry using the following command as the
      <systemitem class="username">root</systemitem> user:</para>

<screen role="root"><userinput>sed -i 's@php/includes"@&amp;\ninclude_path = ".:/usr/lib/php"@' \
    /etc/php.ini</userinput></screen>

      <para>To enable fastCGI support in the <application>Apache</application>
      web server, two LoadModule directives must be added to the
      <filename>httpd.conf</filename> file. They are commented out, so just issue the
      following command as <systemitem class="username">root</systemitem> user:</para>

<screen role="root"><userinput>sed -i -e '/proxy_module/s/^#//'      \
       -e '/proxy_fcgi_module/s/^#//' \
       /etc/httpd/httpd.conf</userinput></screen>

      <para>Those modules accept various <command>ProxyPass</command>
      directives. One possibility is (as the
      <systemitem class="username">root</systemitem> user):</para>

<screen role="root"><userinput>echo \
'ProxyPassMatch ^/(.*\.php)$ fcgi://127.0.0.1:9000/srv/www/$1' >> \
/etc/httpd/httpd.conf</userinput></screen>

      <para>Additionally, it may be useful to add an entry for
      <filename>index.php</filename> to the DirectoryIndex directive of the
      <filename>httpd.conf</filename> file. Lastly, adding a line to setup the
      <filename class='extension'>.phps</filename> extension to show
      highlighted <application>PHP</application> source may be
      desirable:</para>

<screen><literal>AddType application/x-httpd-php-source .phps</literal></screen>

      <para>You'll need to restart the <application>Apache</application> web server
      after making any modifications to the <filename>httpd.conf</filename>
      file.</para>

    </sect3>

    <sect3  id="php-init">
      <title>Boot Script</title>

      <para>
        To automatically start the <command>php-fpm</command> daemon when the
        system is rebooted, install the
        <filename>/etc/rc.d/init.d/php</filename> bootscript from the
        <xref linkend="bootscripts"/> package as the
        <systemitem class="username">root</systemitem> user:
      </para>

      <indexterm zone="php php-init">
        <primary sortas="f-php">php</primary>
      </indexterm>

<screen role="root"><userinput>make install-php</userinput></screen>
    </sect3>

  </sect2>

  <sect2 role="content">
    <title>Contents</title>

    <segmentedlist>
      <segtitle>Installed Programs</segtitle>
      <segtitle>Installed Library</segtitle>
      <segtitle>Installed Directories</segtitle>

      <seglistitem>
        <seg>pear, peardev, pecl, phar (symlink), phar.phar,
        php, php-cgi, php-config, php-fpm, and phpize</seg>
        <seg>dba.so and opcache.so in
       /usr/lib/php/extensions/no-debug-non-zts-20121212/</seg>
        <seg>/usr/include/php, /usr/lib/php, /usr/share/php and
        /usr/share/doc/php-&php-version;</seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

      <varlistentry id="php-prog">
        <term><command>php</command></term>
        <listitem>
          <para>is a command line interface that enables you to parse and
          execute PHP code.</para>
          <indexterm zone="php php-prog">
            <primary sortas="b-php">php</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pear">
        <term><command>pear</command></term>
        <listitem>
          <para>is the PHP Extension and Application
          Repository (PEAR) package manager.</para>
          <indexterm zone="php pear">
            <primary sortas="b-pear">pear</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="php-fpm">
        <term><command>php-fpm</command></term>
        <listitem>
          <para>is the fastCGI process manager for PHP.</para>
          <indexterm zone="php php-fpm">
            <primary sortas="b-php-fpm">php-fpm</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>