在php中按exif数据对图像进行排序
我是php新手,我正在尝试找出如何按exif创建日期对图像进行排序。下面的代码是我遵循的本教程中的代码: 我只是做了一些修改来检索exif数据 我正在寻找一个没有数据库的方法,目标是有一个分页的画廊(现在它是分页的)排序与最新的第一在php中按exif数据对图像进行排序,php,html,apache,exif,Php,Html,Apache,Exif,我是php新手,我正在尝试找出如何按exif创建日期对图像进行排序。下面的代码是我遵循的本教程中的代码: 我只是做了一些修改来检索exif数据 我正在寻找一个没有数据库的方法,目标是有一个分页的画廊(现在它是分页的)排序与最新的第一 function getPictures() { global $page, $per_page, $has_previous, $has_next, $DirFoto, $DirThumb; if ( $handle = opendir($DirF
function getPictures() {
global $page, $per_page, $has_previous, $has_next, $DirFoto, $DirThumb;
if ( $handle = opendir($DirFoto) ) {
echo '<ul id="pictures">';
$count = 0;
$skip = $page * $per_page;
if ( $skip != 0 )
$has_previous = true;
while ( $count < $skip && ($file = readdir($handle)) !== false ) {
if ( !is_dir($file) && ($type = getPictureType($file)) != '' )
$count++;
}
while ( $count < $per_page && ($file = readdir($handle)) !== false ) {
if ( !is_dir($file) && ($type = getPictureType($file)) != '' ) {
$exif = exif_read_data("$DirFoto/$file", 0, true);
if ( ! is_dir($DirThumb) ) {
mkdir($DirThumb);
}
if ( ! file_exists($DirThumb.'/'.$file) ) {
makeThumb( $file, $type );
}
echo '<li><a href="'.$DirFoto.'/'.$file.'" title="Photo taken on '.date("F d Y, H:i:s", strtotime($exif['IFD0']['DateTime'])).'">';
echo '<img src="'.$DirThumb.'/'.$file.'" alt="'.date("F d Y, H:i:s", strtotime($exif['IFD0']['DateTime'])).'"/>';
echo '</a></li>';
$count++;
}
}
echo '</ul>';
while ( ($file = readdir($handle)) !== false ) {
if ( !is_dir($file) && ($type = getPictureType($file)) != '' ) {
$has_next = true;
break;
}
}
}
}
函数getPictures(){
全局$page,$per_page,$has_previous,$has_next,$DirFoto,$DirThumb;
如果($handle=opendir($DirFoto)){
echo'- ;
$count=0;
$skip=$page*$每页;
如果($skip!=0)
$has_previous=true;
而($count<$skip&($file=readdir($handle))!==false){
如果(!is_dir($file)&($type=getPictureType($file))!=“”)
$count++;
}
而($count<$per_page&&($file=readdir($handle))!==false){
如果(!is_dir($file)&($type=getPictureType($file))!=“”){
$exif=exif_read_数据($DirFoto/$file),0,true);
如果(!is_dir($DirThumb)){
mkdir($DirThumb);
}
如果(!file_存在($DirThumb./'.$file)){
makeThumb($file,$type);
}
回音“”;
$count++;
}
}
回声“
由于代码读取目录并在运行时输出HTML,因此您必须对其进行一些更改,以执行所需操作。我建议首先将文件名读入一个数组,并为每次读取的文件调用
exif\u read\u data
如果按文件名为数组设置关键帧,且数组的值为exif创建日期,则可以调用按创建日期对数组进行排序。如果文件没有有效的exif创建日期,也许您可以使用服务器上文件的修改时间
一旦数组按正确的顺序排序,就可以更改以下while循环
while ( $count < $per_page && ($file = readdir($handle)) !== false ) {
while($count<$per_page&&($file=readdir($handle))!==false){
将来
while($count<$per\u page&&($file=array\u shift($sorted\u files))!==false){
其中,
$sorted\u files
是排序文件的数组。如果没有帮助,我可以尝试编写一个示例。很抱歉,我现在无法尝试此解决方案,但它应该类似于:
<?php
function getPictures() {
global $page, $per_page, $has_previous, $has_next, $DirFoto, $DirThumb;
if ( $handle = opendir($DirFoto) ) {
$images = array(); # empty data structure
while(($file = readdir($handle)) !== false ) {
if ( !is_dir($file) && ($type = getPictureType($file)) != '' )
# only for images
$exif = exif_read_data("$DirFoto/$file", 0, true);
$date = $exif['IFD0']['DateTime']; # everything you like to be ordered
$images[$file] = $date; # associate each file to its date
}
}
asort($images); # sort the structure by date
echo '<ul id="pictures">';
$skip = $page * $per_page;
if ( $skip != 0 )
$has_previous = true;
$count = 0;
while ( $count < $skip && ($file = array_shift($images)) !== false ) {
if ( !is_dir($file) && ($type = getPictureType($file)) != '' )
$count++;
}
# $count = 0;# (???)
while ( $count < $per_page && ($file = array_shift($images)) !== false ) {
$exif = exif_read_data("$DirFoto/$file", 0, true); # it could be avoided
if ( ! is_dir($DirThumb) ) {
mkdir($DirThumb);
}
if ( ! file_exists($DirThumb.'/'.$file) ) {
makeThumb( $file, $type );
}
echo '<li><a href="'.$DirFoto.'/'.$file.'" title="Photo taken on '.date("F d Y, H:i:s", strtotime($exif['IFD0']['DateTime'])).'">';
echo '<img src="'.$DirThumb.'/'.$file.'" alt="'.date("F d Y, H:i:s", strtotime($exif['IFD0']['DateTime'])).'"/>';
echo '</a></li>';
$count++;
}
echo '</ul>';
while ( ($file = readdir($handle)) !== false ) {
if ( !is_dir($file) && ($type = getPictureType($file)) != '' ) {
$has_next = true;
break;
}
}
}
}
?>
如果我将鼠标悬停在工具提示上,显示正确的日期,但没有加载缩略图或图像,代码现在就可以工作了。
在我的第一个问题中,我省略了最后两个函数,这是我当前的更新代码:
<?php
$page = $_GET['page'];
$has_previous = false;
$has_next = false;
function getPictures() {
global $page, $per_page, $has_previous, $has_next, $DirFoto, $DirThumb;
if ( $handle = opendir($DirFoto) ) {
$images = array();
while(($file = readdir($handle)) !== false ) {
if ( !is_dir($file) && ($type = getPictureType($file)) != '' )
$exif = exif_read_data("$DirFoto/$file", 0, true);
$date = $exif['IFD0']['DateTime'];
$images[$file] = $date;
}
}
asort($images);
echo '<ul id="pictures">';
$skip = $page * $per_page;
if ( $skip != 0 )
$has_previous = true;
$count = 0;
while ( $count < $skip && ($file = array_shift($images)) !== false ) {
if ( !is_dir($file) && ($type = getPictureType($file)) != '' )
$count++;
}
while ( $count < $per_page && ($file = array_shift($images)) !== false ) {
$exif = exif_read_data("$DirFoto/$file", 0, true);
if ( ! is_dir($DirThumb) ) {
mkdir($DirThumb);
}
if ( ! file_exists($DirThumb.'/'.$file) ) {
makeThumb( $file, $type );
}
echo '<li><a href="'.$DirFoto.'/'.$file.'" title="Photo taken on '.date("F d Y, H:i:s", strtotime($exif['IFD0']['DateTime'])).'">';
echo '<img src="'.$DirThumb.'/'.$file.'" alt="'.date("F d Y, H:i:s", strtotime($exif['IFD0']['DateTime'])).'"/>';
echo '</a></li>';
$count++;
}
echo '</ul>';
while ( ($file = readdir($handle)) !== false ) {
if ( !is_dir($file) && ($type = getPictureType($file)) != '' ) {
$has_next = true;
break;
}
}
}
function getPictureType($file) {
$split = explode('.', $file);
$ext = $split[count($split) - 1];
if ( preg_match('/jpg|jpeg/i', $ext) ) {
return 'jpg';
} else if ( preg_match('/png/i', $ext) ) {
return 'png';
} else if ( preg_match('/gif/i', $ext) ) {
return 'gif';
} else {
return '';
}
}
function makeThumb( $file, $type ) {
global $max_width, $max_height;
if ( $type == 'jpg' ) {
$src = imagecreatefromjpeg($DirFoto.'/'.$file);
} else if ( $type == 'png' ) {
$src = imagecreatefrompng($DirFoto.'/'.$file);
} else if ( $type == 'gif' ) {
$src = imagecreatefromgif($DirFoto.'/'.$file);
}
if ( ($oldW = imagesx($src)) < ($oldH = imagesy($src)) ) {
$newW = $oldW * ($max_width / $oldH);
$newH = $max_height;
} else {
$newW = $max_width;
$newH = $oldH * ($max_height / $oldW);
}
$new = imagecreatetruecolor($newW, $newH);
imagecopyresampled($new, $src, 0, 0, 0, 0, $newW, $newH, $oldW, $oldH);
if ( $type == 'jpg' ) {
imagejpeg($new, $DirThumb.'/'.$file);
} else if ( $type == 'png' ) {
imagepng($new, $DirThumb.'/'.$file);
} else if ( $type == 'gif' ) {
imagegif($new, $DirThumb.'/'.$file);
}
imagedestroy($new);
imagedestroy($src);
}
?>
我将整个代码合理化了一点,这是我的结果:
$ScriptsHead = '
<link type="text/css" media="screen" rel="stylesheet" href="./stile.css"/>
<link type="text/css" rel="stylesheet" href="./js/photoswipe.css"/>
<script type="text/javascript" src="./js/jquery-1.8.3.js"></script>
<script type="text/javascript" src="./js/klass.min.js"></script>
<script type="text/javascript" src="./js/code.photoswipe-3.0.5.min.js"></script>
<script type="text/javascript" src="./js/miophotoswipe.js"></script>
';
function getPictures() {
global $page, $per_page, $has_previous, $has_next, $DirFoto, $DirThumb;
if ( $handle = opendir($DirFoto) ) {
$skip = $page * $per_page;
$images = array(); # empty data structure
while(($file = readdir($handle)) !== false ) {
if($file == '..' || $file == '.' || is_dir($file) || getPictureType($file) == '')
continue;
# only for images
$exif = exif_read_data("$DirFoto/$file", 0, true);
$date = $exif['IFD0']['DateTime']; # everything you like to be ordered
$images[$file] = $date; # associate each file to its date
}
asort($images); # sort the structure by date
echo '<ul id="pictures">';
if ( $skip != 0 )
$has_previous = true;
$count = -1;
foreach ($images as $file => $fileDate) {
$count ++;
if($count < $skip)
continue;
if($count >= $skip + $per_page) {
$has_next = true;
break;
}
if ( ! is_dir($DirThumb) ) {
mkdir($DirThumb);
}
if ( ! file_exists($DirThumb.'/'.$file) ) {
makeThumb( $file, $type );
}
echo '<li><a href="'.$DirFoto.'/'.$file.'" title="Photo taken on '.date("F d Y, H:i:s", strtotime($fileDate)).'">';
echo '<img src="'.$DirThumb.'/'.$file.'" alt="'.date("F d Y, H:i:s", strtotime($fileDate)).'"/>';
echo '</a></li>';
}
echo '</ul>';
}
}
function getPictureType($file) {
$split = explode('.', $file);
$ext = $split[count($split) - 1];
if ( preg_match('/jpg|jpeg/i', $ext) ) {
return 'jpg';
} else if ( preg_match('/png/i', $ext) ) {
return 'png';
} else if ( preg_match('/gif/i', $ext) ) {
return 'gif';
} else {
return '';
}
}
function makeThumb( $file, $type ) {
global $max_width, $max_height, $DirFoto, $DirThumb;
if ( $type == 'jpg' ) {
$src = imagecreatefromjpeg($DirFoto.'/'.$file);
} else if ( $type == 'png' ) {
$src = imagecreatefrompng($DirFoto.'/'.$file);
} else if ( $type == 'gif' ) {
$src = imagecreatefromgif($DirFoto.'/'.$file);
}
if ( ($oldW = imagesx($src)) < ($oldH = imagesy($src)) ) {
$newW = $oldW * ($max_width / $oldH);
$newH = $max_height;
} else {
$newW = $max_width;
$newH = $oldH * ($max_height / $oldW);
}
$new = imagecreatetruecolor($newW, $newH);
imagecopyresampled($new, $src, 0, 0, 0, 0, $newW, $newH, $oldW, $oldH);
if ( $type == 'jpg' ) {
imagejpeg($new, $DirThumb.'/'.$file);
} else if ( $type == 'png' ) {
imagepng($new, $DirThumb.'/'.$file);
} else if ( $type == 'gif' ) {
imagegif($new, $DirThumb.'/'.$file);
}
imagedestroy($new);
imagedestroy($src);
}
/* echo phpinfo(); */
?>
$ScriptsHead='1!'
';
函数getPictures(){
全局$page,$per_page,$has_previous,$has_next,$DirFoto,$DirThumb;
如果($handle=opendir($DirFoto)){
$skip=$page*$每页;
$images=array()#空数据结构
while(($file=readdir($handle))!==false){
如果($file='..'| |$file='.| |是_dir($file)| | getPictureType($file)='')
继续;
#仅适用于图像
$exif=exif_read_数据($DirFoto/$file),0,true);
$date=$exif['IFD0']['DateTime'];#您想订购的一切
$images[$file]=$date;#将每个文件与其日期关联
}
asort($images)#按日期对结构排序
echo';
如果($skip!=0)
$has_previous=true;
$count=-1;
foreach($file=>$fileDate的图像){
$count++;
如果($count<$skip)
继续;
如果($count>=$skip+$每页){
$has_next=true;
打破
}
如果(!is_dir($DirThumb)){
mkdir($DirThumb);
}
如果(!file_存在($DirThumb./'.$file)){
makeThumb($file,$type);
}
回音“”;
}
回声“
”;
}
}
函数getPictureType($file){
$split=分解('.',$file);
$ext=$split[计数($split)-1];
if(preg_match('/jpg | jpeg/i',$ext)){
返回“jpg”;
}else if(preg_匹配('/png/i',$ext)){
返回‘png’;
}else if(preg_匹配('/gif/i',$ext)){
返回'gif';
}否则{
返回“”;
}
}
函数makeThumb($file,$type){
全局$max_width、$max_height、$DirFoto、$DirThumb;
如果($type=='jpg'){
$src=imagecreatefromjpeg($DirFoto./'.$file);
}如果($type='png'),则为else{
$src=imagecreatefrompng($DirFoto./'.$file);
}else if($type=='gif'){
$src=imagecreatefromgif($DirFoto./'.$file);
}
如果($oldW=imagesx($src))<($oldH=imagesy($src))){
$newW=$oldW*($max_width/$oldH);
$newH=$max_高度;
}否则{
$newW=$max_宽度;
$newH=$oldH*($max_height/$oldW);
}
$new=imagecreatetruecolor($newW,$newH);
imagecopyresampled($new、$src、0、0、0、0、$newW、$newH、$oldW、$oldH);
如果($type=='jpg'){
imagejpeg($new,$DirThumb./'.$file);
}如果($type='png'),则为else{
imagepng($new,$DirThumb./'.$file);
}else if($type=='gif'){
imagegif($new,$DirThumb./'.$file);
}
(新的);
(1)(src);
}
/*echo phpinfo()*/
?>
php有一个图书馆,我
$ScriptsHead = '
<link type="text/css" media="screen" rel="stylesheet" href="./stile.css"/>
<link type="text/css" rel="stylesheet" href="./js/photoswipe.css"/>
<script type="text/javascript" src="./js/jquery-1.8.3.js"></script>
<script type="text/javascript" src="./js/klass.min.js"></script>
<script type="text/javascript" src="./js/code.photoswipe-3.0.5.min.js"></script>
<script type="text/javascript" src="./js/miophotoswipe.js"></script>
';
function getPictures() {
global $page, $per_page, $has_previous, $has_next, $DirFoto, $DirThumb;
if ( $handle = opendir($DirFoto) ) {
$skip = $page * $per_page;
$images = array(); # empty data structure
while(($file = readdir($handle)) !== false ) {
if($file == '..' || $file == '.' || is_dir($file) || getPictureType($file) == '')
continue;
# only for images
$exif = exif_read_data("$DirFoto/$file", 0, true);
$date = $exif['IFD0']['DateTime']; # everything you like to be ordered
$images[$file] = $date; # associate each file to its date
}
asort($images); # sort the structure by date
echo '<ul id="pictures">';
if ( $skip != 0 )
$has_previous = true;
$count = -1;
foreach ($images as $file => $fileDate) {
$count ++;
if($count < $skip)
continue;
if($count >= $skip + $per_page) {
$has_next = true;
break;
}
if ( ! is_dir($DirThumb) ) {
mkdir($DirThumb);
}
if ( ! file_exists($DirThumb.'/'.$file) ) {
makeThumb( $file, $type );
}
echo '<li><a href="'.$DirFoto.'/'.$file.'" title="Photo taken on '.date("F d Y, H:i:s", strtotime($fileDate)).'">';
echo '<img src="'.$DirThumb.'/'.$file.'" alt="'.date("F d Y, H:i:s", strtotime($fileDate)).'"/>';
echo '</a></li>';
}
echo '</ul>';
}
}
function getPictureType($file) {
$split = explode('.', $file);
$ext = $split[count($split) - 1];
if ( preg_match('/jpg|jpeg/i', $ext) ) {
return 'jpg';
} else if ( preg_match('/png/i', $ext) ) {
return 'png';
} else if ( preg_match('/gif/i', $ext) ) {
return 'gif';
} else {
return '';
}
}
function makeThumb( $file, $type ) {
global $max_width, $max_height, $DirFoto, $DirThumb;
if ( $type == 'jpg' ) {
$src = imagecreatefromjpeg($DirFoto.'/'.$file);
} else if ( $type == 'png' ) {
$src = imagecreatefrompng($DirFoto.'/'.$file);
} else if ( $type == 'gif' ) {
$src = imagecreatefromgif($DirFoto.'/'.$file);
}
if ( ($oldW = imagesx($src)) < ($oldH = imagesy($src)) ) {
$newW = $oldW * ($max_width / $oldH);
$newH = $max_height;
} else {
$newW = $max_width;
$newH = $oldH * ($max_height / $oldW);
}
$new = imagecreatetruecolor($newW, $newH);
imagecopyresampled($new, $src, 0, 0, 0, 0, $newW, $newH, $oldW, $oldH);
if ( $type == 'jpg' ) {
imagejpeg($new, $DirThumb.'/'.$file);
} else if ( $type == 'png' ) {
imagepng($new, $DirThumb.'/'.$file);
} else if ( $type == 'gif' ) {
imagegif($new, $DirThumb.'/'.$file);
}
imagedestroy($new);
imagedestroy($src);
}
/* echo phpinfo(); */
?>