php-doc-en/reference/image/ini.xml

<?xml version="1.0" encoding="iso-8859-1"?>
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<section id="image.configuration">
 &reftitle.runtime;
 &extension.runtime;
 <para>
  Exif supports automatically conversion for Unicode and JIS 
  character encodings of user comments when module
  <link linkend="ref.mbstring">mbstring</link>
  is available. This is done by first decoding the comment
  using the specified characterset. The result is then encoded
  with another characterset which should match your
  <literal>HTTP</literal> output.
 <table>
  <title>Exif configuration options</title>
  <tgroup cols="3">
   <thead>
    <row>
     <entry>Name</entry>
     <entry>Default</entry>
     <entry>Changeable</entry>
    </row>
   </thead>
   <tbody>
    <row>
     <entry>exif.encode_unicode</entry>
     <entry>"ISO-8859-15"</entry>
     <entry>PHP_INI_ALL</entry>
    </row>
    <row>
     <entry>exif.decode_unicode_motorola</entry>
     <entry>"UCS-2BE"</entry>
     <entry>PHP_INI_ALL</entry>
    </row>
    <row>
     <entry>exif.decode_unicode_intel</entry>
     <entry>"UCS-2LE"</entry>
     <entry>PHP_INI_ALL</entry>
    </row>
    <row>
     <entry>exif.encode_jis</entry>
     <entry>""</entry>
     <entry>PHP_INI_ALL</entry>
    </row>
    <row>
     <entry>exif.decode_jis_motorola</entry>
     <entry>"JIS"</entry>
     <entry>PHP_INI_ALL</entry>
    </row>
    <row>
     <entry>exif.decode_jis_intel</entry>
     <entry>"JIS"</entry>
     <entry>PHP_INI_ALL</entry>
    </row>
    </tbody>
   </tgroup>
  </table>
  For further details and definition of the PHP_INI_* constants see
  <function>ini_set</function>.
 </para>
 
 &ini.descriptions.title;
 
 <para>
  <variablelist>
   <varlistentry id="ini.exif.encode_unicode">
    <term>
     <parameter>exif.encode_unicode</parameter>
     <type>string</type>
    </term>
    <listitem>
    <para>
     <literal>exif.encode_unicode</literal> defines the 
     characterset UNICODE user comments are handled.
     This defaults to ISO-8859-15 which should work for
     most non asian countries. The setting can be empty
     or must be an encoding supported by mbstring. If it
     is empty the current internal encoding of mbstring is
     used.
    </para>
    </listitem>
   </varlistentry>
    <varlistentry id="ini.exif.decode_unicode_motorola">
    <term>
     <parameter>exif.decode_unicode_motorola</parameter>
     <type>string</type>
    </term>
    <listitem>
     <para>
      <literal>exif.decode_unicode_motorola</literal> defines 
      the image internal characterset for Unicode encoded user 
      comments if image is in motorola byte order (big-endian).
      This setting cannot be empty but you can specify a list
      of encodings supported by mbstring. The default is UCS-2BE.
     </para>
    </listitem>
   </varlistentry>
    <varlistentry id="ini.exif.decode_unicode_intel">
    <term>
     <parameter>exif.decode_unicode_intel</parameter>
     <type>string</type>
    </term>
    <listitem>
     <para>
      <literal>exif.decode_unicode_intel</literal> defines 
      the image internal characterset for Unicode encoded user 
      comments if image is in intel byte order (little-endian).
      This setting cannot be empty but you can specify a list
      of encodings supported by mbstring. The default is UCS-2LE.
     </para>
    </listitem>
   </varlistentry>
    <varlistentry id="ini.exif.encode_jis">
    <term>
     <parameter>exif.encode_jis</parameter>
     <type>string</type>
    </term>
    <listitem>
     <para>
      <literal>exif.encode_jis</literal> defines the 
      characterset JIS user comments are handled.
      This defaults to an empty value which forces 
      the functions to use the current internal encoding
      of mbstring.
     </para>
    </listitem>
   </varlistentry>
    <varlistentry id="ini.exif.decode_jis_motorola">
    <term>
     <parameter>exif.decode_jis_motorola</parameter>
     <type>string</type>
    </term>
    <listitem>
     <para>
      <literal>exif.decode_jis_motorola</literal> defines 
      the image internal characterset for JIS encoded user 
      comments if image is in motorola byte order (big-endian).
      This setting cannot be empty but you can specify a list
      of encodings supported by mbstring. The default is JIS.
     </para>
    </listitem>
   </varlistentry>
    <varlistentry id="ini.exif.decode_jis_intel">
    <term>
     <parameter>exif.decode_jis_intel</parameter>
     <type>string</type>
    </term>
    <listitem>
     <para>
      <literal>exif.decode_jis_intel</literal> defines 
      the image internal characterset for JIS encoded user 
      comments if image is in intel byte order (little-endian).
      This setting cannot be empty but you can specify a list
      of encodings supported by mbstring. The default is JIS.
     </para>
    </listitem>
   </varlistentry>
  </variablelist>
 </para>
</section>

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