递归缩放目录图片."/>
php实例 生活便利小代码，拍照后，批量递归缩放目录图片.
新入手单反一周了，今天终于找上了机会带上老婆老妈去荔枝公园拍了一天的照，回来准备上传至相册，突然发现，每张图片都有点偏大，找工具也很累，直接上网，东拼西凑了点代码．实现将指定目录的图片，按指定大小范围缩放并输出到指定目录(含递归) ,供自己以后处理相片使用. 不多废话了，附代码.PHP code ?
| 1 2 3 4 5 6 7 | header( 'Content-type:text/html; charset=utf-8' ); require "lib/imgHelper.php" ; $imgHelper = new imgHelper( "dir1" ); $imgHelper ->setOutputDir( "dir2" ); //默认输出在1024 768 下等比缩放，需要自定义时，$imgHelper->setOutputSize(1440,900); $imgHelper ->execution(); |
lib 库代码.
PHP code ?
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 | <?php /** * 图片处理助手 */ class imgHelper { public $srcFiles ; //源文件 array public $srcDirs ; //源目录 public $exportDir ; //输出目录 public $exportFiles ; //输出文件 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 ); } /** * 设置输出目录 * @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 简便处理. $maxWidth = $this ->_option[ "maxWidth" ]; $maxHeight = $this ->_option[ "maxHeight" ]; $this ->resize( $srcImg , $toFile , $maxWidth , $maxHeight ); endforeach ; } //缩放图片． private function resize( $srcImage , $toFile , $maxWidth = 100, $maxHeight = 100, $imgQuality =100) { //创建目录目录! $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 ); //求出绽放比例 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; } /** * 设置输出的大小 * @param string $width * @param string $height */ public function setOutputSize( $width = "1024" , $height = "768" ){ $_option = array ( "maxWidth" => "$width" , "maxHeight" => "$height" ); $this ->setOptions( $_option ); } /** * 设置可选参数 * @param $option */ private function setOptions( $option ) { foreach ( $option as $key => $val ): if ( isset( $option [ $key ]) && $option [ $key ] ){ $this ->_option[ $key ] = $val ; } endforeach ; } /** * 遍得到文件夹下的所有文件 */ 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 ; } /** * 判断是否是图片 * @param $file * @return bool */ private function isIMg( $file ) { $pInfo = pathinfo ( $file ); $extention = $pInfo [ "extension" ]; return preg_match( "/(jpg)|(png)|gif/i" , $extention ); } /** * 调试数据 */ public function debug() { $this ->pr( $this ->srcFiles, "待处理图片数组." ); $this ->pr( $this ->srcDirs , "源目录" ); $this ->pr( $this ->exportDir , "目标目录" ); } private function pr( $array , $title = 'DEBUG' , $type = 'array' , $width = '' ) { /*** @格式化输出 */ $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>" ; } } |
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php实例 生活便利小代码,拍照后,批量递归缩放目录图片.
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