PHP实现批量生成各种尺寸Logo的方法

使用PHP GD，使用良好，一键剪裁各种尺寸，打包下载。经常换icon的懂的，美工给你一个1024的logo，你得ps出各种尺寸，于是有了这个东西。

代码如下:

 ?phphtml' target='_blank'>class image { * source image * @var string|array private $source; * temporay image * @var file private $image; private $ext; * erros * @var array private $error; * construct * @param string|array $source public function __construct($source = NULL) { if($source != NULL) { $this- source($source); * set the source image * @param string|array $source public function source($source) {  if(!is_array($source)) { $this- source[ name ] = $source; $this- source[ tmp_name ] = $source; $type = NULL; $ext = strtolower(end(explode( . ,$source))); switch($ext) { case jpg :  case jpeg : $type = image/jpeg break; case gif : $type = image/gif break; case png : $type = image/png break; $this- source[ type ] = $type; } else { $this- source = $source; $this- destination = $this- source[ name  * resize the image * @param int $width * @param int $height public function resize($width = NULL,$height = NULL) { if(isset($this- source[ tmp_name ]) file_exists($this- source[ tmp_name ])) { list($source_width,$source_height) = getimagesize($this- source[ tmp_name ]); if(($width == NULL) ($height != NULL)) { $width = ($source_width * $height) / $source_height; if(($width != NULL) ($height == NULL)) { $height = ($source_height * $width) / $source_width; if(($width == NULL) ($height == NULL)) { $width = $source_width; $height = $source_height; switch($this- source[ type ]) { case image/jpeg : $created = imagecreatefromjpeg($this- source[ tmp_name ]); break; case image/gif : $created = imagecreatefromgif($this- source[ tmp_name ]); break; case image/png : $created = imagecreatefrompng($this- source[ tmp_name ]); break; $this- image = imagecreatetruecolor($width,$height); imagecopyresampled($this- image,$created,0,0,0,0,$width,$height,$source_width,$source_height); * add watermark on image * @param string $mark * @param int $opac * @param int $x_pos * @param int $y_pos public function watermark($mark,$opac,$x_pos,$y_pos) { if(file_exists($mark) ($this- image != )) { $ext = strtolower(end(explode( . ,$mark))); switch($ext) { case jpg :  case jpeg : $watermark = imagecreatefromjpeg($mark); break; case gif : $watermark = imagecreatefromgif($mark); break; case png : $watermark = imagecreatefrompng($mark); break; list($watermark_width,$watermark_height) = getimagesize($mark); $source_width = imagesx($this- image); $source_height = imagesy($this- image); if($x_pos == top ) $pos = t else $pos = b  if($y_pos == left ) $pos .= l else $pos .= r  $dest_x = 0;  $dest_y = 0;  switch($pos) { case tr : $dest_x = $source_width - $watermark_width; break; case bl : $dest_y = $source_height - $watermark_height; break; case br : $dest_x = $source_width - $watermark_width; $dest_y = $source_height - $watermark_height; break; imagecopymerge($this- image,$watermark,$dest_x,$dest_y,0,0,$watermark_width,$watermark_height,$opac); * crop the image * @param int $x * @param int $y * @param int $width * @param int $height public function crop($x,$y,$width,$height) { if(isset($this- source[ tmp_name ]) file_exists($this- source[ tmp_name ]) ($width 10) ($height 10)) { switch($this- source[ type ]) { case image/jpeg : $created = imagecreatefromjpeg($this- source[ tmp_name ]); break; case image/gif : $created = imagecreatefromgif($this- source[ tmp_name ]); break; case image/png : $created = imagecreatefrompng($this- source[ tmp_name ]); break; $this- image = imagecreatetruecolor($width,$height); imagecopy($this- image,$created,0,0,$x,$y,$width,$height); * create final image file  * @param string $destination * @param int $quality public function create($destination,$quality = 100) { if($this- image != ) { $extension = substr($destination,-3,3); switch($extension) { case gif :  imagegif($this- image,$destination,$quality);  break; case png : $quality = ceil($quality/10) - 1; imagepng($this- image,$destination,$quality);  break; default :  imagejpeg($this- image,$destination,$quality);  break; * check if extension is valid public function validate_extension() { if(isset($this- source[ tmp_name ]) file_exists($this- source[ tmp_name ])) { $exts = array( image/jpeg , image/pjpeg , image/png , image/x-png  $ext = $this- source[ type  $valid = 0; $this- ext = .not_found  if ($ext == $exts[0] || $ext == $exts[1]) { $valid = 1; $this- ext = .jpg  // if ($ext == $exts[2]) { // $valid = 1; // $this- ext = .gif  // } if ($ext == $exts[2] || $ext == $exts[3]) { $valid = 1; $this- ext = .png  if($valid != 1) { $this- error .= extension  } else { $this- error .= source  * check if the size is correct * @param int $max public function validate_size($max) { if(isset($this- source[ tmp_name ]) file_exists($this- source[ tmp_name ])) { $max = $max * 1024; if($this- source[ size ] = $max) { $this- error .= size  } else { $this- error .= source  * check if the dimension is correct * @param int $limit_width * @param int $limit_height public function validate_dimension($limit_width,$limit_height) { if(isset($this- source[ tmp_name ]) file_exists($this- source[ tmp_name ])) { list($source_width,$source_height) = getimagesize($this- source[ tmp_name ]); if(($source_width $limit_width) || ($source_height $limit_height)) { $this- error .= dimension  } else { $this- error .= source  * get the found errors public function error() { $error = array(); if(stristr($this- error, source )) $error[] = 找不到上传文件  if(stristr($this- error, dimension )) $error[] = 上传图片尺寸太大  if(stristr($this- error, extension )) $error[] = 不符合要求的格式  if(stristr($this- error, size )) $error[] = 图片文件太大  return $error; public function error_string() { $error =  if(stristr($this- error, source )) $error .= 找不到上传文件 /  if(stristr($this- error, dimension )) $error .= 上传图片尺寸太大 /  if(stristr($this- error, extension )) $error .= 不符合要求的格式 /  if(stristr($this- error, size )) $error .= 图片文件太大 /  if(eregi( / $ , $error)) { $error = substr($error, 0, -3); return $error; public function ext() { return $this- }

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