mirror of
https://github.com/sigmasternchen/php-doc-en
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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@227604 c90b9560-bf6c-de11-be94-00142212c4b1
102 lines
2.8 KiB
XML
102 lines
2.8 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.16 $ -->
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<refentry id="function.imagecreatefromjpeg">
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<refnamediv>
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<refname>imagecreatefromjpeg</refname>
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<refpurpose>Create a new image from file or URL</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>resource</type><methodname>imagecreatefromjpeg</methodname>
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<methodparam><type>string</type><parameter>filename</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>imagecreatefromjpeg</function> returns an image identifier
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representing the image obtained from the given filename.
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</para>
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<para>
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<function>imagecreatefromjpeg</function> returns an empty string
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on failure. It also outputs an error message, which unfortunately
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displays as a broken link in a browser. To ease debugging the
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following example will produce an error <acronym>JPEG</acronym>:
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<example>
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<title>Example to handle an error during creation</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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function LoadJpeg($imgname)
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{
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$im = @imagecreatefromjpeg($imgname); /* Attempt to open */
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if (!$im) { /* See if it failed */
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$im = imagecreatetruecolor(150, 30); /* Create a black image */
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$bgc = imagecolorallocate($im, 255, 255, 255);
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$tc = imagecolorallocate($im, 0, 0, 0);
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imagefilledrectangle($im, 0, 0, 150, 30, $bgc);
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/* Output an errmsg */
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imagestring($im, 1, 5, 5, "Error loading $imgname", $tc);
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}
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return $im;
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}
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header("Content-Type: image/jpeg");
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$img = LoadJpeg("bogus.image");
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imagejpeg($img);
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?>
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]]>
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</programlisting>
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&example.outputs.similar;
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<screenshot>
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<graphic fileref="figures/image.imagecreatefromjpeg.jpg" />
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</screenshot>
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</example>
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</para>
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&tip.fopen-wrapper;
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>filename</parameter></term>
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<listitem>
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<para>
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Path to the JPEG image
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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Returns an image resource identifier on success, &false; on errors.
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</para>
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</refsect1>
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<refsect1 role="notes">
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&reftitle.notes;
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¬e.config.jpeg;
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&warn.no-win32-fopen-wrapper;
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../../../manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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