ecshop后台老板添加商品相册的时候bmp格式的无法生成缩略图

程序员文章站 2024-02-18 08:44:16

...

ecshop后台添加商品相册的时候bmp格式的无法生成缩略图
ecshop后台批量生成图片商品相册的时候bmp格式的无法生成缩略图求怎么解决？我想达到的效果就是能够生成bmp格式的图片！

ecshop bmp

分享到：
------解决方案--------------------
ecshop本身不支持bmp图像生成缩微图。你要先转换为gif/jpg/png其中一种
------解决方案--------------------
你可下载一个 ImageCreateFromBMP.php
然后改一下你的程序
------解决方案--------------------

引用:

Quote: 引用:

ecshop本身不支持bmp图像生成缩微图。你要先转换为gif/jpg/png其中一种

我想要的就是让ecshop支持这种生成图！咋办呢？

includes/cls_image.php是ecshop的图片处理库，你可以用ImageCreateFromBMP这个函数自行扩展

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'] 
		$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 
			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 ;  
声明：本文内容由网友自发贡献，版权归原作者所有，本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容，请联系admin@php.cn核实处理。
相关文章
相关视频