复制代码 代码如下:

<? php

// 例子：

$path = ROOT . ' upload/2009/06/03/124401282315771. ' ;

$pathAll = $path . ' bmp ' ;

$mi = '' ;

$mi = ImageCreateFromBMP( $pathAll );

imagejpeg( $mi , $path . ' jpg ' );

// 函数如下：

function ImageCreateFromBMP( $filename )

{

// Ouverture du fichier en mode binaire

if ( ! $f1 = fopen ( $filename , " rb " )) return FALSE ;

// 1 : Chargement des ent�tes FICHIER

$FILE = unpack ( " vfile_type/Vfile_size/Vreserved/Vbitmap_offset " , fread ( $f1 , 14 ));

if ( $FILE [ ' file_type ' ] != 19778 ) return FALSE ;

// 2 : Chargement des ent�tes BMP

$BMP = unpack ( ' Vheader_size/Vwidth/Vheight/vplanes/vbits_per_pixel ' .

' /Vcompression/Vsize_bitmap/Vhoriz_resolution ' .

' /Vvert_resolution/Vcolors_used/Vcolors_important ' , fread ( $f1 , 40 ));

$BMP [ ' colors ' ] = pow ( 2 , $BMP [ ' bits_per_pixel ' ]);

if ( $BMP [ ' size_bitmap ' ] == 0 ) $BMP [ ' size_bitmap ' ] = $FILE [ ' file_size ' ] - $FILE [ ' bitmap_offset ' ];

$BMP [ ' bytes_per_pixel ' ] = $BMP [ ' bits_per_pixel ' ] / 8 ;

$BMP [ ' bytes_per_pixel2 ' ] = ceil ( $BMP [ ' bytes_per_pixel ' ]);

$BMP [ ' decal ' ] = ( $BMP [ ' width ' ] * $BMP [ ' bytes_per_pixel ' ] / 4 );

$BMP [ ' decal ' ] -= floor ( $BMP [ ' width ' ] * $BMP [ ' bytes_per_pixel ' ] / 4 );

$BMP [ ' decal ' ] = 4 - ( 4 * $BMP [ ' decal ' ]);

if ( $BMP [ ' decal ' ] == 4 ) $BMP [ ' decal ' ] = 0 ;

// 3 : Chargement des couleurs de la palette

$PALETTE = array ();

if ( $BMP [ ' colors ' ] < 16777216 )

{

$PALETTE = unpack ( ' V ' . $BMP [ ' colors ' ] , fread ( $f1 , $BMP [ ' colors ' ] * 4 ));

}

// 4 : Cr�ation de l'image

$IMG = fread ( $f1 , $BMP [ ' size_bitmap ' ]);

$VIDE = chr ( 0 );

$res = imagecreatetruecolor( $BMP [ ' width ' ] , $BMP [ ' height ' ]);

$P = 0 ;

$Y = $BMP [ ' height ' ] - 1 ;

while ( $Y >= 0 )

{

$X = 0 ;

while ( $X < $BMP [ ' width ' ])

{

if ( $BMP [ ' bits_per_pixel ' ] == 24 )

$COLOR = unpack ( " V " , substr ( $IMG , $P , 3 ) . $VIDE );

elseif ( $BMP [ ' bits_per_pixel ' ] == 16 )

{

$COLOR = unpack ( " n " , substr ( $IMG , $P , 2 ));

$COLOR [ 1 ] = $PALETTE [ $COLOR [ 1 ] + 1 ];

}

elseif ( $BMP [ ' bits_per_pixel ' ] == 8 )

{

$COLOR = unpack ( " n " , $VIDE . substr ( $IMG , $P , 1 ));

$COLOR [ 1 ] = $PALETTE [ $COLOR [ 1 ] + 1 ];

}

elseif ( $BMP [ ' bits_per_pixel ' ] == 4 )

{

$COLOR = unpack ( " n " , $VIDE . substr ( $IMG , floor ( $P ) , 1 ));

if (( $P * 2 ) % 2 == 0 ) $COLOR [ 1 ] = ( $COLOR [ 1 ] >> 4 ) ; else $COLOR [ 1 ] = ( $COLOR [ 1 ] & 0x0F );

$COLOR [ 1 ] = $PALETTE [ $COLOR [ 1 ] + 1 ];

}

elseif ( $BMP [ ' bits_per_pixel ' ] == 1 )

{

$COLOR = unpack ( " n " , $VIDE . substr ( $IMG , floor ( $P ) , 1 ));

if (( $P * 8 ) % 8 == 0 ) $COLOR [ 1 ] = $COLOR [ 1 ] >> 7 ;

elseif (( $P * 8 ) % 8 == 1 ) $COLOR [ 1 ] = ( $COLOR [ 1 ] & 0x40 ) >> 6 ;

elseif (( $P * 8 ) % 8 == 2 ) $COLOR [ 1 ] = ( $COLOR [ 1 ] & 0x20 ) >> 5 ;

elseif (( $P * 8 ) % 8 == 3 ) $COLOR [ 1 ] = ( $COLOR [ 1 ] & 0x10 ) >> 4 ;

elseif (( $P * 8 ) % 8 == 4 ) $COLOR [ 1 ] = ( $COLOR [ 1 ] & 0x8 ) >> 3 ;

elseif (( $P * 8 ) % 8 == 5 ) $COLOR [ 1 ] = ( $COLOR [ 1 ] & 0x4 ) >> 2 ;

elseif (( $P * 8 ) % 8 == 6 ) $COLOR [ 1 ] = ( $COLOR [ 1 ] & 0x2 ) >> 1 ;

elseif (( $P * 8 ) % 8 == 7 ) $COLOR [ 1 ] = ( $COLOR [ 1 ] & 0x1 );

$COLOR [ 1 ] = $PALETTE [ $COLOR [ 1 ] + 1 ];

}

else

return FALSE ;

imagesetpixel( $res , $X , $Y , $COLOR [ 1 ]);

$X ++ ;

$P += $BMP [ ' bytes_per_pixel ' ];

}

$Y -- ;

$P += $BMP [ ' decal ' ];

}

// Fermeture du fichier

fclose ( $f1 );

return $res ;

}

?>