新入手單反一週了，今天終於找上了機會帶上老婆老媽去荔枝公園拍了一天的照，回來準備上傳至相冊，突然發現，每張圖片都有點偏大，找工具也很累，直接上網，東拼西湊了點代碼．實現將指定目錄的圖片，按指定大小範圍縮放並輸出到指定目錄(含遞歸) ,供自己以後處理相片使用. 不多廢話了，附代碼.
lib 庫代碼.
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header('Content-type:text/html; charset=utf-8'); require "lib/imgHelper.php"; $imgHelper = new imgHelper( "dir1" ); $imgHelper->setOutputDir( "dir2" ); //默認輸出在1024 768 下等比縮放，需要自定義時，$imgHelper->setOutputSize(1440,900); $imgHelper->execution(); |
lib 庫代碼.
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<?php/** * 圖片處理助手 */class imgHelper{ public $srcFiles; //源文件 array public $srcDirs; //源目錄 public $exportDir; //輸出目錄 public $exportFiles; //輸出文件 array private $_option = array("maxWidth"=>"1024" , "maxHeight"=>"768"); function __construct($dir = '' , $option = array() ) { if (!$dir) return; $this->srcDirs = $dir; $this->srcFiles = $this->traversal($dir); $this->setOptions( $option ); } /** * 設置輸出目錄 * @param $dir */ public function setOutputDir( $dir ) { if( !is_dir( $dir )) { mkdir($dir , 0777 , 1);} $this->exportDir = $dir; } public function execution() { foreach( $this->srcFiles as $key =>$val ): $srcImg = $val; $toFile = str_replace( $this->srcDirs , $this->exportDir , $srcImg); //todo 簡便處理. $maxWidth = $this->_option["maxWidth"]; $maxHeight = $this->_option["maxHeight"]; $this->resize($srcImg , $toFile , $maxWidth , $maxHeight ); endforeach; } //縮放圖片． private function resize($srcImage,$toFile,$maxWidth = 100,$maxHeight = 100,$imgQuality=100) { //創建目錄目錄! $pInfo = pathinfo( $toFile ); $dir = $pInfo["dirname"]; if(!is_dir( $dir) ){ mkdir($dir , 0777 , 1);} list($width, $height, $type, $attr) = getimagesize($srcImage); if($width < $maxWidth || $height < $maxHeight) return ; switch ($type) { case 1: $img = imagecreatefromgif($srcImage); break; case 2: $img = imagecreatefromjpeg($srcImage); break; case 3: $img = imagecreatefrompng($srcImage); break; } $scale = min($maxWidth/$width, $maxHeight/$height); //求出綻放比例 if($scale < 1) { $newWidth = floor($scale*$width); $newHeight = floor($scale*$height); $newImg = imagecreatetruecolor($newWidth, $newHeight); imagecopyresampled($newImg, $img, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height); $newName = ""; $toFile = preg_replace("/(.gif|.jpg|.jpeg|.png)/i","",$toFile); switch($type) { case 1: if(imagegif($newImg, "$toFile$newName.gif", $imgQuality)) return "$newName.gif"; break; case 2: if(imagejpeg($newImg, "$toFile$newName.jpg", $imgQuality)) return "$newName.jpg"; break; case 3: if(imagepng($newImg, "$toFile$newName.png", $imgQuality)) return "$newName.png"; break; default: if(imagejpeg($newImg, "$toFile$newName.jpg", $imgQuality)) return "$newName.jpg"; break; } imagedestroy($newImg); } imagedestroy($img); return false; } /** * 設置輸出的大小 * @param string $width * @param string $height */ public function setOutputSize( $width = "1024" , $height = "768"){ $_option = array("maxWidth"=>"$width" , "maxHeight"=>"$height"); $this->setOptions( $_option ); } /** * 設置可選參數 * @param $option */ private function setOptions( $option) { foreach( $option as $key =>$val): if( isset( $option[$key]) && $option[$key] ){ $this->_option[$key] = $val; } endforeach; } /** * 遍得到文件夾下的所有文件 */ private function traversal($path) { if (!$path) return array(); $files = array(); if (!is_dir($path)) return; foreach (scandir($path) as $file) { if ($file != '.' && $file != '..') { $path2 = $path . '/' . $file; if (is_dir($path2)) { $temp = $this->traversal($path2); $files = array_merge($files, $temp); } else { if ($this->isIMg($file)) { $files[] = $path . "/" . $file; } } } } return $files; } /** * 判斷是否是圖片 * @param $file * @return bool */ private function isIMg($file) { $pInfo = pathinfo( $file); $extention = $pInfo["extension"]; return preg_match("/(jpg)|(png)|gif/i" , $extention); } /** * 調試數據 */ public function debug() {$this->pr($this->srcFiles, "待處理圖片數組."); $this->pr( $this->srcDirs , "源目錄"); $this->pr( $this->exportDir , "目標目錄"); } private function pr($array, $title = 'DEBUG', $type = 'array', $width = '') { /*** @格式化輸出 */ $title .= date("Y-m-d H:i:s"); $widthStr = ""; if ($width) $widthStr = "width:$width" . "px"; echo "<fieldset style=\"-moz-border-radius:5px 5px 5px 5px; -moz-box-shadow:0px 0px 10px rgba(00,00,00,0.45); border: 3px solid transparent; padding:3px; margin-top:20px; \"><legend style=\"color: #069; margin:3px; $widthStr \">$title</legend>"; echo "<div style = '-moz-border-radius:10px 10px 10px 10px;font-size:14px; color:#069; border:1px solid #F0FAF9; font-size:9pt; background:#F0FAF9; padding:5px;'>"; print("<pre>"); if ($type == 'json') { $array = json_decode($array); } print_r($array); print("</pre>"); echo "<div>"; echo "</fieldset>"; }} |
