imagecreatefromjpeg, imagecreatefrompng, imagecreatefromgif /* // $sub_name = jpeg, png, gif $function_name = 'imagecreatefrom'.$sub_name; $image = $function_name($filename); //$image = imagecreatefromjpeg($filename); */ if($sub_name == 'jpeg'){ $image = imagecreatefromjpeg($from_filename); imagecopyresampled($image_new, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height); return imagejpeg($image_new, $save_filename, $quality); } else if($sub_name == 'png'){ $image = imagecreatefrompng($from_filename); imagecopyresampled($image_new, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height); return imagepng($image_new, $save_filename, 9); } } /** * 抓取要縮圖的比例 * $source_w : 來源圖片寬度 * $source_h : 來源圖片高度 * $inside_w : 縮圖預定寬度 * $inside_h : 縮圖預定高度 * * Test: * $v = (getResizePercent(1024, 768, 400, 300)); * echo 1024 * $v . "\n"; * echo 768 * $v . "\n"; */ function getResizePercent($source_w, $source_h, $inside_w, $inside_h) { if ($source_w < $inside_w && $source_h < $inside_h) { return 1; // Percent = 1, 如果都比預計縮圖的小就不用縮 } $w_percent = $inside_w / $source_w; $h_percent = $inside_h / $source_h; return ($w_percent > $h_percent) ? $h_percent : $w_percent; } ?> '; do { $img=$image_path.$row_Rt2['meta_img']; $save=$save_path.$row_Rt2['meta_img']; $bol='N'; if(!file_exists($save)){ if(file_exists($img)){ $bol='Y'; ImageResize($img,$save); $c=0; while(1){ if(file_exists($save)){ break; } else{ $c++; } if($c>10000){ break;} } } } echo "\t".$bol."\t".$row_Rt2['meta_img'].'
'; } while ($row_Rt2 = mysql_fetch_assoc($Rt2)); mysql_free_result($Rt2); ?>