php-doc-en/functions/iconv.xml

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 <reference id="ref.iconv">
  <title>iconv functions</title>
  <titleabbrev>iconv</titleabbrev>

  <partintro>
   <para>
    This module contains an interface to the iconv library functions. To 
    be able to use the functions defined in this
    module you must compile you PHP interpreter using the --with-iconv
    option. In order to do so, you must have iconv() function in 
    standard C library or libiconv installed on your system.
    libiconv library is available from <ulink url="&url.libiconv;">
     &url.libiconv;</ulink>.
   </para>

   <para>
    iconv library function converts files between various encoded 
    character sets. The supported character sets depend on iconv() 
    implementation on your system. Note that iconv() function in some
    system is not work well as you expect. In this case, you should
    install libiconv library.
   </para>
  </partintro>

  <refentry id="function.iconv">
   <refnamediv>
    <refname>iconv</refname>
    <refpurpose>Convert string to requested character encoding</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
    <funcsynopsis>
     <funcprototype>
      <funcdef>string <function>iconv</function></funcdef>
      <paramdef>string <parameter>in_charset</parameter></paramdef>
      <paramdef>string <parameter>out_charset</parameter></paramdef>
      <paramdef>string <parameter>str</parameter></paramdef>
     </funcprototype>
    </funcsynopsis>
    <para>
     It converts the string <parameter>string</parameter> encoded in
     <parameter>in_charset</parameter> to the string encoded in
     <parameter>out_charset</parameter>. It returns the converted
     string or &false;, if it fails.
    </para>
    <para>
     <example>
      <title><function>iconv</function> example:</title>
      <programlisting role="php">
echo iconv("ISO-8859-1","UTF-8","This is test.");
      </programlisting>
     </example>
    </para>
   </refsect1>
  </refentry>

  <refentry id="function.iconv-get-encoding">
   <refnamediv>
    <refname>iconv_get_encoding</refname>
    <refpurpose>
     Get current setting for character encoding conversion
    </refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
    <funcsynopsis>
     <funcprototype>
      <funcdef>array <function>iconv_get_encoding</function></funcdef>
      <paramdef>string 
       <parameter><optional>type</optional></parameter>
      </paramdef>
     </funcprototype>
    </funcsynopsis>
    <para>
     It returns the current settings of 
     <function>ob_iconv_handler</function> as array or 
     &false; in failure.
    </para>
    <para>
     See also: 
     <function>iconv_set_encoding</function> and
     <function>ob_iconv_handler</function>.
    </para>
   </refsect1>
  </refentry>

  <refentry id="function.iconv-set-encoding">
   <refnamediv>
    <refname>iconv_set_encoding</refname>
    <refpurpose>
     Set current setting for character encoding conversion
    </refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
    <funcsynopsis>
     <funcprototype>
      <funcdef>array <function>iconv_set_encoding</function></funcdef>
      <paramdef>string <parameter>type</parameter></paramdef>
      <paramdef>string <parameter>charset</parameter></paramdef>
     </funcprototype>
    </funcsynopsis>
    <para>
     It changes the value of <parameter>type</parameter> to
     <parameter>charset</parameter> and returns &true; in success or 
      &false; in failure.
    </para>
    <para>
     <example>
      <title><function>iconv_set_encoding</function> example:</title>
      <programlisting role="php">
iconv_set_encoding("internal_encoding", "UTF-8");
iconv_set_encoding("output_encoding", "ISO-8859-1");
      </programlisting>
     </example>
    </para>
    <para>
     See also: 
     <function>iconv_get_encoding</function> and
     <function>ob_iconv_handler</function>.
    </para>
   </refsect1>
  </refentry>

  <refentry id="function.ob-iconv-handler">
   <refnamediv>
    <refname>ob_iconv_handler</refname>
    <refpurpose>
     Convert character encoding as output buffer handler
    </refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
    <funcsynopsis>
     <funcprototype>
      <funcdef>array <function>ob_iconv_handler</function></funcdef>
      <paramdef>string 
       <parameter>contents</parameter>
      </paramdef>
      <paramdef>int 
       <parameter>status</parameter>
      </paramdef>
     </funcprototype>
    </funcsynopsis>
    <para>
     It converts the string encoded in 
     <parameter>internal_encoding</parameter> to
     <parameter>output_encoding</parameter>.
    </para>
    <para>
     <parameter>internal_encoding</parameter> and
     <parameter>output_encoding</parameter> should be defined
     by <function>iconv_set_encoding</function> or in 
     configuration file.
    </para>
    <para>
     <example>
      <title><function>ob_iconv_handler</function> example:</title>
      <programlisting role="php">
ob_start("ob_iconv_handler"); // start output buffering
      </programlisting>
     </example>
    </para>
    <para>
     See also: 
     <function>iconv_get_encoding</function> and
     <function>iconv_set_encoding</function>.
    </para>
   </refsect1>
  </refentry>

 </reference>

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