imagecreatefromwbmp

(PHP 4 >= 4.0.1, PHP 5)

imagecreatefromwbmp — Create a new image from file or URL

Description

resource imagecreatefromwbmp ( string $filename )

imagecreatefromwbmp() returns an image identifier representing the image obtained from the given filename.

imagecreatefromwbmp() 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 WBMP:

Example #1 Example to handle an error during creation


<?php
function LoadWBMP($imgname)
{
    $im = @imagecreatefromwbmp($imgname); /* Attempt to open */
    if (!$im) { /* See if it failed */
        $im  = imagecreatetruecolor (20, 20); /* Create a blank image */
        $bgc = imagecolorallocate($im, 255, 255, 255);
        $tc  = imagecolorallocate($im, 0, 0, 0);
        imagefilledrectangle($im, 0, 0, 10, 10, $bgc);
        /* Output an errmsg */
        imagestring($im, 1, 5, 5, "Error loading $imgname", $tc);
    }
    return $im;
}
?>

Tip

A URL can be used as a filename with this function if the fopen wrappers have been enabled. See fopen() for more details on how to specify the filename and List of Supported Protocols/Wrappers for a list of supported URL protocols.

Parameters

filename: Path to the WBMP image

Return Values

Returns an image resource identifier on success, FALSE on errors.

Notes

Note: WBMP support is only available if PHP was compiled against GD-1.8 or later.

Warning

Windows versions of PHP prior to PHP 4.3.0 do not support access of remote files via this function, even if allow_url_fopen is enabled.

imagecreatefromxbm

imagecreatefromstring

Last updated: Fri, 18 Jul 2008

add a note User Contributed Notes
imagecreatefromwbmp

AeroX @ aerox-studios
11-May-2008 11:54


.bmp is just hex encoded RGB values.

All you need to do is open in binary mode and seperate the header from the body.

Decode the width and height from the header.

Then create the image pixel by pixel from the RGB values in the body.



function imagecreatefrombmp( $filename )

{

    $file = fopen( $filename, "rb" );

    $read = fread( $file, 10 );

    while( !feof( $file ) && $read != "" )

    {

        $read .= fread( $file, 1024 );

    }

    $temp = unpack( "H*", $read );

    $hex = $temp[1];

    $header = substr( $hex, 0, 104 );

    $body = str_split( substr( $hex, 108 ), 6 );

    if( substr( $header, 0, 4 ) == "424d" )

    {

        $header = substr( $header, 4 );

        // Remove some stuff?

        $header = substr( $header, 32 );

        // Get the width

        $width = hexdec( substr( $header, 0, 2 ) );

        // Remove some stuff?

        $header = substr( $header, 8 );

        // Get the height

        $height = hexdec( substr( $header, 0, 2 ) );

        unset( $header );

    }

    $x = 0;

    $y = 1;

    $image = imagecreatetruecolor( $width, $height );

    foreach( $body as $rgb )

    {

        $r = hexdec( substr( $rgb, 4, 2 ) );

        $g = hexdec( substr( $rgb, 2, 2 ) );

        $b = hexdec( substr( $rgb, 0, 2 ) );

        $color = imagecolorallocate( $image, $r, $g, $b );

        imagesetpixel( $image, $x, $height-$y, $color );

        $x++;

        if( $x >= $width )

        {

            $x = 0;

            $y++;

        }

    }

    return $image;

}

nko38 dot fr at gmail dot com
02-Nov-2005 02:20


for .bmp files, convert them with bmp2png, then you can use this files in gd





http://cetus.sakura.ne.jp/softlab/b2p-home/

clambert at whitecrown dot net
16-Jun-2001 10:47


WBMP images are Wireless Bitmaps, not Windows Bitmaps. WBMP is used for bandwidth constrained, black and white, limited devices such as PDAs and Cell Phones.

add a note

imagecreatefromxbm

imagecreatefromstring

Last updated: Fri, 18 Jul 2008