php-doc-en/reference/image/functions/imagecreatefromgif.xml
2003-01-14 11:00:21 +00:00

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XML

<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.6 $ -->
<!-- splitted from ./en/functions/image.xml, last change in rev 1.2 -->
<refentry id="function.imagecreatefromgif">
<refnamediv>
<refname>imagecreatefromgif</refname>
<refpurpose>Create a new image from file or URL</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>resource</type><methodname>imagecreatefromgif</methodname>
<methodparam><type>string</type><parameter>filename</parameter></methodparam>
</methodsynopsis>
<para>
<function>imagecreatefromgif</function> returns an image identifier
representing the image obtained from the given filename.
</para>
<para>
<function>imagecreatefromgif</function> returns an empty string
on failure. It also outputs an error message, which unfortunately
displays as a broken link in a browser. To ease debugging the
following example will produce an error GIF:
<example>
<title>
Example to handle an error during creation (courtesy
vic@zymsys.com)
</title>
<programlisting role="php">
<![CDATA[
function LoadGif ($imgname) {
$im = @imagecreatefromgif ($imgname); /* Attempt to open */
if (!$im) { /* See if it failed */
$im = imagecreate (150, 30); /* Create a blank image */
$bgc = imagecolorallocate ($im, 255, 255, 255);
$tc = imagecolorallocate ($im, 0, 0, 0);
imagefilledrectangle ($im, 0, 0, 150, 30, $bgc);
/* Output an errmsg */
imagestring ($im, 1, 5, 5, "Error loading $imgname", $tc);
}
return $im;
}
]]>
</programlisting>
</example>
<note>
<para>
Since all GIF support was removed from the GD library in
version 1.6, this function is not available if you are using
that version of the GD library.
</para>
</note>
</para>
&tip.fopen-wrapper;
&warn.no-win32-fopen-wrapper;
</refsect1>
</refentry>
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