mirror of
https://github.com/sigmasternchen/php-doc-en
synced 2025-03-27 06:18:56 +00:00
d8d1504e85
Based on a patch provided by an anonyous user. git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@347731 c90b9560-bf6c-de11-be94-00142212c4b1
126 lines
3.6 KiB
XML
126 lines
3.6 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
|
|
<!-- $Revision$ -->
|
|
|
|
<refentry xml:id="function.imageresolution" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
|
|
<refnamediv>
|
|
<refname>imageresolution</refname>
|
|
<refpurpose>Get or set the resolution of the image</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsect1 role="description"><!-- {{{ -->
|
|
&reftitle.description;
|
|
<methodsynopsis role="procedural">
|
|
<type>mixed</type><methodname>imageresolution</methodname>
|
|
<methodparam><type>resource</type><parameter>image</parameter></methodparam>
|
|
</methodsynopsis>
|
|
<methodsynopsis role="procedural">
|
|
<type>mixed</type><methodname>imageresolution</methodname>
|
|
<methodparam><type>resource</type><parameter>image</parameter></methodparam>
|
|
<methodparam><type>int</type><parameter>res_x</parameter></methodparam>
|
|
<methodparam choice="opt"><type>int</type><parameter>res_y</parameter><initializer>$res_x</initializer></methodparam>
|
|
</methodsynopsis>
|
|
<para>
|
|
<function>imageresolution</function> allows to set and get the resolution of
|
|
an image in DPI (dots per inch). If none of the optional parameters is given,
|
|
the current resolution is returned as indexed array. If only
|
|
<parameter>res_x</parameter> is given, the horizontal and vertical resolution
|
|
are set to this value. If both optional parameters are given, the horizontal
|
|
and vertical resolution are set to these values, respectively.
|
|
</para>
|
|
<para>
|
|
The resolution is only used as meta information when images are read from and
|
|
written to formats supporting this kind of information (curently PNG and
|
|
JPEG). It does not affect any drawing operations. The default resolution
|
|
for new images is 96 DPI.
|
|
</para>
|
|
</refsect1><!-- }}} -->
|
|
|
|
<refsect1 role="parameters"><!-- {{{ -->
|
|
&reftitle.parameters;
|
|
<variablelist>
|
|
&gd.image.description;
|
|
<varlistentry>
|
|
<term><parameter>res_x</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
The horizontal resolution in DPI.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>res_y</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
The vertical resolution in DPI.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1><!-- }}} -->
|
|
|
|
<refsect1 role="returnvalues"><!-- {{{ -->
|
|
&reftitle.returnvalues;
|
|
<para>
|
|
When used as getter (first signature),
|
|
it returns an indexed array of the horizontal and vertical resolution on
|
|
success, &return.falseforfailure;.
|
|
When used as setter (second signature), it returns
|
|
&true; on success, &return.falseforfailure;.
|
|
</para>
|
|
</refsect1><!-- }}} -->
|
|
|
|
<refsect1 role="examples"><!-- {{{ -->
|
|
&reftitle.examples;
|
|
<example xml:id="imageresolution.example.basic"><!-- {{{ -->
|
|
<title>Setting and getting the resolution of an image</title>
|
|
<programlisting role="php">
|
|
<![CDATA[
|
|
<?php
|
|
$im = imagecreatetruecolor(100, 100);
|
|
imageresolution($im, 200);
|
|
print_r(imageresolution($im));
|
|
imageresolution($im, 300, 72);
|
|
print_r(imageresolution($im));
|
|
?>
|
|
]]>
|
|
</programlisting>
|
|
&example.outputs;
|
|
<screen>
|
|
<![CDATA[
|
|
Array
|
|
(
|
|
[0] => 200
|
|
[1] => 200
|
|
)
|
|
Array
|
|
(
|
|
[0] => 300
|
|
[1] => 72
|
|
)
|
|
]]>
|
|
</screen>
|
|
</example><!-- }}} -->
|
|
</refsect1><!-- }}} -->
|
|
|
|
</refentry>
|
|
|
|
<!-- Keep this comment at the end of the file
|
|
Local variables:
|
|
mode: sgml
|
|
sgml-omittag:t
|
|
sgml-shorttag:t
|
|
sgml-minimize-attributes:nil
|
|
sgml-always-quote-attributes:t
|
|
sgml-indent-step:1
|
|
sgml-indent-data:t
|
|
indent-tabs-mode:nil
|
|
sgml-parent-document:nil
|
|
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
|
|
sgml-exposed-tags:nil
|
|
sgml-local-catalogs:nil
|
|
sgml-local-ecat-files:nil
|
|
End:
|
|
vim600: syn=xml fen fdm=syntax fdl=2 si
|
|
vim: et tw=78 syn=sgml
|
|
vi: ts=1 sw=1
|
|
-->
|