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<?xml version="1.0" encoding="utf-8"?>

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<chapter xml:id="tutorial" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">

 <title>????</title>



 <para>

  ??????? PHP ???????? PHP ????????????? web

  ??????????????????�<link linkend="intro-whatcando">PHP

  ????</link>�??????????

 </para>

 <para>

  ??? PHP ? web ???????? HTML ?????????????? HTML

  ??????????????

 </para>



 <sect1 xml:id="tutorial.requirements">

  <title>??????</title>

  <para>

   ?????????????????????? PHP????

   <filename>.php</filename> ???????? PHP ????????????????

   PHP ???????????????????????????????

   PHP??????????????? <filename>.php</filename>

   ?????????? web

   ????????????????????????????????????????????????????

   PHP ????????? HTML

   ????????????????????????????????????

   web ????? PHP ?????????????????? <link

   xlink:href="&url.php.links;">PHP ????</link>????? PHP ? web ???

  </para>

  <para>

   ?????????????????????????????????????

   <link xlink:href="&url.apache;">Apache</link> ? web ????????

   <link xlink:href="&url.php.downloads;">PHP</link>????????????????

   <link xlink:href="&url.mysql.docs;">MySQL</link>?

  </para>

  <para>

   ??????????????????????????????

   <link linkend="install">PHP ????</link>????????????????

   web ??????????? PHP

   ??????????<link

   xlink:href="&url.php.mailing-lists;">??????</link>?????????????????

   PHP???????<link xlink:href="&url.installkits;">????????????</link>???????????????????????????????????????????

   PHP ??? web ??????????? MacOSX?Linux ? Windiws?? Linux

   ????? <link xlink:href="&url.rpmfind;">rpmfind</link> ?

   <link xlink:href="&url.rpmfind.pbone;">PBone</link> ????? RPM

   ??????????? <link xlink:href="&url.apt-get;">apt-get</link>

   ?? Debian ???????

  </para>

 </sect1>



 <sect1 xml:id="tutorial.firstpage">

  <title>??? PHP ??</title>

  <para>

   ? web ???????<varname>DOCUMENT_ROOT</varname>??????????

   <filename>hello.php</filename>??????????

  </para>

  <para>

   <example>

    <title>??? PHP ???<filename>hello.php</filename></title>

    <programlisting role="php">

<![CDATA[

<html>

 <head>

  <title>PHP ??</title>

 </head>

 <body>

 <?php echo '<p>Hello World</p>'; ?>

 </body>

</html>

]]>

    </programlisting>

    <simpara>

     ??????????? web ???? URL

     ????????????�/hello.php�????????????

     URL ??? <literal>http://localhost/hello.php</literal> ??

     <literal>http://127.0.0.1/hello.php</literal>???????

     web ??????????????????????????

     PHP ????????????????

    </simpara>

    <screen role="html">

<![CDATA[

<html>

 <head>

  <title>PHP ??</title>

 </head>

 <body>

 <p>Hello World</p>

 </body>

</html>

]]>

    </screen>

   </example>

  </para>

  <para>

   ????????????????? PHP ? <function>echo</function> ?????

   <literal>Hello World</literal>??????????????????<emphasis>?????</emphasis>??????????????????????

   PHP ??????????�.php�???????????????????�.php�???????

   PHP?????? HTML ????????????????????????????

  </para>

  <para>

   ????????????????????????????????????????????????????????????????

   PHP?????????????????????????�<link linkend="install">??</link>�????????????

   PHP????????????????????????????????????????????

   URL ?????????????????????????????????????

   PHP ??????????????? <link xlink:href="&url.php.support;">PHP

   ????</link>???????????

  </para>

  <para>

   ???????????? PHP ?????????????????

   <literal>&lt;?php</literal> ??? PHP ???????????

   PHP ?????????????? <literal>?&gt;</literal> ???

   PHP ????????????? HTML ???????????

   PHP ?????????�<link linkend="language.basic-syntax">PHP ????</link>�????????

  </para>



  <note>

   <title>????</title>

   <para>

   ????? HTML ?????????????????????? HTML

   ????????PHP ????????????? <literal>?&gt;</literal>

   ????????????????????????? PHP

   ?????????????? PHP ??????????????????????

   PHP ??? <literal>?&gt;</literal> ???????????????????????????

   echo/print ??????????

   </para>

  </note>



  <note>

   <title>???????</title>

   <para>

    ?????????????????IDE??????????????

    PHP ??????????????? <link

    xlink:href="&url.phpeditorlist;">PHP ?????</link>??????????????????????????????????????????????????????????????????????????

   </para>

  </note>



  <note>

   <title>???????</title>

   <para>

    ?? StarOffice Writer?Microsoft Word ? Abiword

    ????????????? PHP

    ??????????????????????????????????<emphasis>???</emphasis>?????

    PHP ?????????????

   </para>

  </note>



  <note>

   <title>?? Windows ???</title>

   <para>

    ???? Windows ?????? PHP

    ???????????????????????

    .php??????????????? .txt

    ????????????????????????????????????????????????????????? <filename>"hello.php"</filename>??????????�??�?????�????�???????????�????�????????????????????

   </para>

  </note>

  <para>

   ?????????????? PHP ??????????????

   PHP ??????? <function>phpinfo</function>?????????????????????<link

   linkend="language.variables.predefined">?????</link>??????

   PHP ???<link linkend="configuration">??</link>????????????????????

  </para>

  <para>

   <example>

    <title>? PHP ??????</title>

    <programlisting role="php">

<![CDATA[

<?php phpinfo(); ?>

]]>

    </programlisting>

   </example>

  </para>

 </sect1>



 <sect1 xml:id="tutorial.useful">

  <title>?????</title>

  <para>

   ?????????????????????????????????????????????????

   agent ???????????? HTTP ????????????????<link

   linkend="language.variables">??</link>??? PHP

   ??????????????????????????

   <varname>$_SERVER['HTTP_USER_AGENT']</varname>?

  </para>

  <note>

   <para>

    <link linkend="reserved.variables.server">$_SERVER</link>

    ?????? PHP ????????? web

    ??????????????????????????�<link

    linkend="language.variables.superglobals">?????</link>�???????????????????????

    PHP <link xlink:href="&url.php.release4.1.0;">4.1.0</link> ????????????

    <varname>$HTTP_*_VARS</varname> ????

    <varname>$HTTP_SERVER_VARS</varname>??????????????????????????�<link

    linkend="tutorial.oldcode">???</link>�????????

   </para>

  </note>

  <para>

   ???????????????????

  </para>

  <para>

   <example>

   <title>????????????</title>

    <programlisting role="php">

<![CDATA[

<?php 

echo $_SERVER['HTTP_USER_AGENT']; 

?>

]]>

   </programlisting>

   <para>

    ??????????

   </para>

    <screen role="html">

Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)

    </screen>

  </example>

  </para>

  <para>

   PHP ??????<link

   linkend="language.types">??</link>?????????????????<link

   linkend="language.types.array">??</link>?????????????????

  </para>

  <para>

   <varname>$_SERVER</varname> ?? PHP ???????????????�<link

   linkend="reserved.variables">????</link>�?????????????????????????

   <function>phpinfo</function> ?????????

  </para>

  <para>

   ????? PHP ??????? PHP ???????????????????

   echo ??????????????? Internet Explorer??????????

  </para>

  <para>

   <example>

    <title><link linkend="language.control-structures">????</link>?<link linkend="language.functions">??</link>???</title>

    <programlisting role="php">

<![CDATA[

<?php

if (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== FALSE) {

    echo '???? Internet Explorer?<br />';

}

?>

]]>

    </programlisting>

    <para>

     ??????????

    </para>

    <screen role="html">

<![CDATA[

???? Internet Explorer?<br />

]]>

    </screen>

   </example>

  </para>

  <para>

   ??????????????????

   <link linkend="control-structures.if">if</link> ????????

   C ??????????????????????????????????

   PHP ?????????????????????????????�<link

   linkend="langref">????</link>�???

  </para>

  <para>

   ????????????? <function>strpos</function>

   ??????<function>strpos</function> ? PHP

   ??????????????????????????????????????

   <varname>$_SERVER['HTTP_USER_AGENT']</varname>????? haystack??????

   <literal>'MSIE'</literal>?????? haystack

   ?????????? needle?????????? needle

   ? haystack ????????????????? &false;??????????

   &false;?? <link linkend="control-structures.if">if</link> ???????

   &true; ??????? {} ?????????????????????????

   <link linkend="control-structures.if">if</link>?<link

   linkend="control-structures.else">else</link> ??????????

   <function>strtoupper</function> ?

   <function>strlen</function>???????????????????????????????????????????????????�<link

   linkend="about.prototypes">????????</link>�?�<link

   linkend="language.functions">??</link>�??????

  </para>

  <para>

   ????????????? PHP ????????? PHP ???????

  </para>

  <para>

   <example>

    <title>?? HTML ? PHP ??</title>

    <programlisting role="php">

<![CDATA[

<?php

if (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== FALSE) {

?>

<h3>strpos() ??????? (FALSE)</h3>

<p>???? Internet Explorer</p>

<?php

} else {

?>

<h3>strpos() ????? (FALSE)</h3>

<center><b>???? Internet Explorer</b></center>

<?php

}

?>

]]>

    </programlisting>

    <para>

     ??????????

    </para>

    <screen role="html">

<![CDATA[

<h3>strpos() ??????? (FALSE)</h3>

<p>???? Internet Explorer</p>

]]>

    </screen>

   </example>

  </para>

  <para>

   ???????? PHP ? echo ???????????????

   PHP ?????? HTML

   ?????????????????????????????????????????

   <function>strpos</function> ??????? &true; ??

   &false;?????????? <literal>'MSIE'</literal>

   ?????????????? HTML ?????????

  </para>

 </sect1>



 <sect1 xml:id="tutorial.forms">

  <title>????</title>

  <para>

   PHP ?????????????? PHP

   ?????????????????????????????

   PHP ???????????????�<link

   linkend="language.variables.external">PHP ?????</link>�??????

   PHP ????????????????? HTML ??????

  </para>

  <para>

   <example>

    <title>????? HTML ??</title>

    <programlisting role="html">

<![CDATA[

<form action="action.php" method="post">

 <p>??: <input type="text" name="name" /></p>

 <p>??: <input type="text" name="age" /></p>

 <p><input type="submit" /></p>

</form>

]]>

    </programlisting>

   </example>

  </para>

  <para>

   ??????????????????????????????????????????????????

   <filename>action.php</filename> ????????????????????

  </para>

  <para>

   <example>

    <title>?????????</title>

    <programlisting role="php">

<![CDATA[

???<?php echo htmlspecialchars($_POST['name']); ?>?

? <?php echo (int)$_POST['age']; ?> ???

]]>

    </programlisting>

    <para>

     ??????????

    </para>

     <screen role="html">

<![CDATA[

???Joe?? 22 ???

]]>

    </screen>

   </example>

  </para>

  <para>

       ??<function>htmlspecialchars</function> ? 

       <literal>(int)</literal> ????????????? 

       <function>htmlspecialchars</function> ?? HTML ??????????????????????????? HTML ???? Javascript????? age ??????????????????????<link

   linkend="language.types.typecasting">??</link> 

       ??? <type>???(integer)</type> ?????????????????????PHP? <link linkend="ref.filter">??(filter)</link> ???????????

   PHP

   ????? <varname>$_POST['name']</varname> ?

   <varname>$_POST['age']</varname> ?????????????????

   <varname>$_SERVER</varname>?????????????

   <link linkend="reserved.variables.post">$_POST</link>????????

   POST ????????????????<emphasis>??</emphasis>?method???????

   <emphasis>GET</emphasis> ?????????????????????

   <link linkend="reserved.variables.get">$_GET</link>

   ?????????????????????????

   <link linkend="reserved.variables.request">$_REQUEST</link>???????

   GET?POST?COOKIE ? FILE ???????

   <function>import_request_variables</function> ???

  </para>

  <para>

   ???? PHP ??? XForms ??????????????????????

   HTML ???XForms

   ????????????????????????????�??�????????<link

   linkend="features.xforms">??? XForum ??????</link>?????????

  </para>

 </sect1>



 <sect1 xml:id="tutorial.oldcode">

  <title>????? PHP ????? PHP ??</title>

  <para>

   ???PHP ??????????????????????????????????????????????PHP

   ??????????????????????????

   PHP ????????????????????????????????????????????????????

  </para>

  <para>

   ?????????????????????????

   <itemizedlist>

    <listitem>

     <simpara>

      ????? <varname>$HTTP_*_VARS</varname>

      ????????????????????PHP

      <link xlink:href="&url.php.release4.1.0;">4.1.0</link>

      ???????<link

      linkend="language.variables.superglobals">???????</link>?<varname>$_GET</varname>?<varname>$_POST</varname>?<varname>$_COOKIE</varname>?<varname>$_SERVER</varname>?<varname>$_FILE</varname>?<varname>$_ENV</varname>?<varname>$_REQUEST</varname>

      ?? <varname>$_SESSION</varname>??? <varname>$HTTP_*_VARS</varname>

      ????? $HTTP_POST_VARS ??? PHP 3 ???????????????&avail.register-long-arrays;

     </simpara>

    </listitem>

    <listitem>

     <simpara>

      ???????????????????????

      PHP <link xlink:href="&url.php.release4.2.0;">4.2.0</link>

      ????&php.ini; ??????

      <link linkend="ini.register-globals">register_globals</link>

      ??????

      <emphasis>off</emphasis>???????????????????????????????????????????????

      on ??????????????

      on?????

      URL <literal>http://www.example.com/foo.php?id=42</literal>

      ??????? <varname>$id</varname>???????? on ??

      off?<varname>$_GET['id']</varname> ?????

     </simpara>

    </listitem>

   </itemizedlist>

  </para>

  <para>

   ???????????????????�<link

   linkend="language.variables.predefined">?????</link>�??????????

  </para>

 </sect1>



 <sect1 xml:id="tutorial.whatsnext">

  <title>???????</title>

  <para>

   ????????????????????????????????????????

   php.net ??????

   <link xlink:href="&url.php.links;">&url.php.links;</link> ????????????

  </para>

  <para>

   ??? PHP Conference ????

   <link xlink:href="&url.php.talks;">&url.php.talks;</link>

   ??????????????????? PHP ??????

  </para>

 </sect1>

</chapter>



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