filename = 'img/test.jpg'; $all_type = array( "jpg" => array("create"=>"ImageCreateFromjpeg", "output"=>"imagejpeg" , "exn"=>".jpg"), "gif" => array("create"=>"ImageCreateFromGIF" , "output"=>"imagegif" , "exn"=>".gif"), "jpeg" => array("create"=>"ImageCreateFromjpeg", "output"=>"imagejpeg" , "exn"=>".jpg"), "png" => array("create"=>"imagecreatefrompng" , "output"=>"imagepng" , "exn"=>".png"), "wbmp" => array("create"=>"imagecreatefromwbmp", "output"=>"image2wbmp" , "exn"=>".wbmp") ); $imgtype = getimagesize($filename); $width = $imgtype[0]; $height = $imgtype[1]; $type = str_replace('image/','',$imgtype['mime']); $func_create = $all_type[$type]['create']; $func_output = $all_type[$type]['output']; $x = $y =0; if(($width * 100)>($height * 120)) { $newwidth = ceil($height * 120/100); $newheight = $height; $x = ($width-$newwidth)/2; } elseif(($width * 100)<($height * 120)) { $newheight = ceil($width * 100/120); $newwidth = $width; $y = ($height-$newheight)/2; } else { $newheight = $height; $newwidth = $width; } // Load $thumb = imagecreatetruecolor($newwidth, $newheight); $source = $func_create($filename); // Resize imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $newwidth, $newheight); // Output $func_output($thumb,'a.jpeg');
PS：这里再为大家推荐几款比较实用的图片处理工具供大家参考使用：
在线图片转换BASE64工具：
更多关于PHP相关内容感兴趣的读者可查看本站专题：《PHP图形与图片操作技巧汇总》、《PHP基本语法入门教程》、《PHP运算与运算符用法总结》、《php面向对象程序设计入门教程》、《PHP网络编程技巧总结》、《PHP数组(Array)操作技巧大全》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》