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Add missing gd docs
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@21451 c90b9560-bf6c-de11-be94-00142212c4b1
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Rasmus Lerdorf
parent
6489b73342
commit
44d1ba627a
1 changed files with 109 additions and 1 deletions
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@ -463,6 +463,81 @@ function LoadGif($imgname)
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</refsect1>
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</refentry>
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<refentry id="function.imagecreatefromjpg">
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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>
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<title>Description</title>
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<funcsynopsis>
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<funcdef>int <function>imagecreatefromjpeg</function></funcdef>
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<paramdef>string <parameter>filename</parameter></paramdef>
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</funcsynopsis>
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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.</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 JPEG:
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<example>
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<title>Example to handle an error during creation (courtesy vic@zymsys.com )</title>
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<programlisting role="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 = ImageCreate(150,30); /* Create a blank 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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ImageString($im,1,5,5,"Error loading $imgname",$tc); /* Output an errmsg */
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}
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return $im;
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}
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</programlisting></example>
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</para>
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</refsect1>
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<refentry id="function.imagecreatefrompng">
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<refnamediv>
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<refname>ImageCreateFromPNG</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>
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<title>Description</title>
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<funcsynopsis>
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<funcdef>int <function>imagecreatefrompng</function></funcdef>
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<paramdef>string <parameter>filename</parameter></paramdef>
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</funcsynopsis>
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<para>
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<function>imagecreatefrompng</function> returns an image identifier
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representing the image obtained from the given filename.</para>
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<para>
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<function>imagecreatefrompng</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 PNG:
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<example>
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<title>Example to handle an error during creation (courtesy vic@zymsys.com )</title>
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<programlisting role="php">
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function LoadPNG($imgname)
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{
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$im = @imagecreatefrompng($imgname); /* Attempt to open */
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if ($im == "") { /* See if it failed */
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$im = ImageCreate(150,30); /* Create a blank 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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ImageString($im,1,5,5,"Error loading $imgname",$tc); /* Output an errmsg */
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}
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return $im;
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}
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</programlisting></example>
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</para>
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<refentry id="function.imagedashedline">
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<refnamediv>
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<refname>ImageDashedLine</refname>
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@ -641,7 +716,7 @@ function LoadGif($imgname)
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<funcsynopsis>
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<funcdef>int <function>imagegif</function></funcdef>
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<paramdef>int <parameter>im</parameter></paramdef>
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<paramdef>string <parameter>filename</parameter></paramdef>
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<paramdef>string <parameter><optional>filename</optional></parameter></paramdef>
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</funcsynopsis>
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<para>
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<function>imagegif</function> creates the GIF file in filename
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@ -667,6 +742,39 @@ function LoadGif($imgname)
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</refsect1>
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</refentry>
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<refentry id="function.imagejpeg">
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<refnamediv>
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<refname>ImageJpeg</refname>
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<refpurpose>output image to browser or file</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcdef>int <function>imagejpeg</function></funcdef>
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<paramdef>int <parameter>im</parameter></paramdef>
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<paramdef>string <parameter><optional>filename</optional></parameter></paramdef>
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<paramdef>int <parameter><optional>quality</optional></parameter></paramdef>
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</funcsynopsis>
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<para>
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<function>imagejpeg</function> creates the JPEG file in filename
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from the image <parameter>im</parameter>. The
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<parameter>im</parameter> argument is the return from the
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<function>imagecreate</function> function.</para>
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<para>
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The filename argument is optional, and if left off, the raw image
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stream will be output directly. To skip the filename argument in order
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to provide a quality argument just use an empty string (''). By sending
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an image/jpg content-type using <function>header</function>, you can create a
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PHP script that outputs JPEG images directly.
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<note>
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<para>
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JPEG support is only available in PHP if PHP was compiled against GD-1.8
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or later.</para>
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</note></para>
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</refsect1>
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</refentry>
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<refentry id="function.imageinterlace">
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<refnamediv>
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<refname>ImageInterlace</refname>
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