0 && $countp==$countw && $countw==$counth) { //遍历一个数组，生成多张缩略图 $rearr = array(); foreach ($thumb_prefix_arr as $key=>$value){ //生成空白画布并填充颜色 $image = imagecreatetruecolor($thumb_width_arr[$key], $thumb_height_arr[$key]); $color = imagecolorallocate($image, 255, 255, 255);//白色 imagefill($image, 0, 0, $color); //计算出缩略比例 $width_scale = $imgarr['width']/$thumb_width_arr[$key];//宽比 $height_scale = $imgarr[height]/$thumb_height_arr[$key];//高比 $scale = $width_scale>$height_scale ? $width_scale : $height_scale; //计算缩略图宽高 $width = $imgarr[width]/$scale; $height = $imgarr[height]/$scale; //到目标图片的位置 $dst_x = ($thumb_width_arr[$key]-$width)/2; $dst_y = ($thumb_height_arr[$key]-$height)/2; //获取原始图片资源并拷贝 $src_image = $imgarr[createfunname]($spath);//获取原始图片资源 imagecopyresized($image, $src_image, $dst_x, $dst_y, 0, 0, $width, $height, $imgarr[width], $imgarr[height]); //保存并返回值 $re = $imgarr['savefunname']($image,self::$thumb_savepath.'/'.$thumb_prefix_arr[$key].$imgarr['name']); $rearr[$key] = $re; } //销毁缩略图资源及原图片资源，释放内存 imagedestroy($image); imagedestroy($src_image); return $rearr;//返回数组 }else{ return false; } }else{ return false; } } protected static function getimageinfo($path){ if (is_file($path)) { $imgarr = getimagesize($path); if (is_array($imgarr)) {//如果$imgarr是一个数组，则说明$path是一个真实图片 //判断不同的图片类型，使用变量函数，生成图片资源:$createfunname,保存图片资源:$savefunname switch ($imgarr['mime']){ case 'image/jpeg': case 'image/pjpeg': $createfunname = 'imagecreatefromjpeg'; $savefunname = 'imagejpeg'; break; case 'image/png': $createfunname = 'imagecreatefrompng'; $savefunname = 'imagepng'; break; case 'image/gif': $createfunname = 'imagecreatefromgif'; $savefunname = 'imagegif'; break; default: return false; } //获取原图片名称 $oldname = pathinfo($path,pathinfo_basename); //返回图片信息数组 return array( 'name'=>$oldname, 'type'=>$imgarr['mime'], 'width'=>$imgarr[0], 'height'=>$imgarr[1], 'createfunname'=>$createfunname, 'savefunname'=>$savefunname ); } }else{ return false; } }}