[discuz建站技术]
discuz支持gif作为缩略图
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我用的是discuz 3.4 gbk,其他版本应该也差不多。; ^2 C. ^5 E: R4 x
- m/ b. }; ~5 u5 n$ idiscuz默认情况下,gif是不能作为缩略图的,有位站长希望让gif也能作为缩略图,就是某个板块开启图片列表功能后,发新帖,gif的会自动设置为封面,看了看代码,插件估计无法实现,只能改源码,一共需要改两个文件:2 E0 \3 Y( K3 Z, S7 s3 n% \6 u# V6 K9 `
1,function_foum.php
; z& P$ S+ a, g3 ?列表里的缩略图是通过这个文件里的getthreadcover来返回的,默认情况下,缩略图是jpg后缀的,并且根据tid设置路径规则,缩略图存放在'data\attachment\forum\threadcover'.substr(md5($tid), 0, 2).'/'.substr(md5($tid), 2, 2).'/'.$tid.'.jpg';,其实gif的也是这个,只是后缀是gif,因此我们必须动态获取封面的后缀了。封面图片放在forum_threadiamge表里,我们可以根据图片后缀来判断图片类型。修改后的函数如下:: q* c4 |( N9 T5 o' K7 A9 E- Q
function getthreadcover($tid, $cover = 0, $getfilename = 0) {
% s5 G. T f6 P8 h global $_G;
% g: b0 r$ _; |1 _2 j if(empty($tid)) {* |# A$ Q+ q' `. d2 E% h2 ^
return '';/ \+ O8 r, P; Z8 H9 f# c* B( v
}
3 s9 K+ x5 {# q$ n1 ?1 g $coverpath = '';, P0 \8 L9 e9 o' u1 K. ^% ^
$filename = DB::result_first('select attachment from %t where tid = %d', array('forum_threadimage', $tid));
$ {2 {9 M/ W9 E# \8 m6 o1 D, S9 q $ext = fileext($filename);
@! u" E$ f8 @* T9 ? $covername = 'threadcover/'.substr(md5($tid), 0, 2).'/'.substr(md5($tid), 2, 2).'/'.$tid.'.'.$ext;0 B) x! y9 H* l
//$covername = 'threadcover/'.substr(md5($tid), 0, 2).'/'.substr(md5($tid), 2, 2).'/'.$tid.'.jpg'; // 原来的。
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if($getfilename) {2 m! n6 ?: X+ _9 F( {- H. x7 {
return $covername;
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if($cover) {
. K$ e4 z" A5 g. E $coverpath = ($cover < 0 ? $_G['setting']['ftp']['attachurl'] : $_G['setting']['attachurl']).'forum/'.$covername;! m, C8 I9 C* E- D5 F0 z# G
}
7 a, C+ r) V( I) y. c/ ^ return $coverpath;, v1 G5 J! l1 M6 O& ~) \
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8 v) |4 j; J5 ^5 d: l2,function_post.php
5 a I8 E9 S" w' R这个文件里的setthreadcover函数是用来设置帖子封面的,无论是新发帖,手动设置封面以及后来重建封面,都会调用这个函数,魔趣吧。我们要改的是判断图片是否是gif,如果是gif就不走系统设置封面的流程,而是直接把这个gif图片复制到封面路径里,直接附上代码吧。# i2 Y& R4 D. J, C4 V
function setthreadcover($pid, $tid = 0, $aid = 0, $countimg = 0, $imgurl = '') {
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! \# J1 `3 |0 ?* K0 e global $_G;
2 Q# @, |* E8 |( ^' _ $cover = 0;# M- m1 D9 R8 p! f
if(empty($_G['uid']) || !intval($_G['setting']['forumpicstyle']['thumbheight']) || !intval($_G['setting']['forumpicstyle']['thumbwidth'])) {
, Z- \: ?# u: H9 C! z return false;
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if(($pid || $aid) && empty($countimg)) {
; W1 G& X1 l: E$ C- { if(empty($imgurl)) {
/ h) V3 R3 l) u# G' r2 Z if($aid) {
. m { {; R# A! H$ M $attachtable = 'aid:'.$aid;
+ D& ^' a: F" w E $attach = C::t('forum_attachment_n')->fetch('aid:'.$aid, $aid, array(1, -1));! C, ?, ^$ j8 r; b
} else {
X7 B9 [6 j. m $attachtable = 'pid:'.$pid;* g" {( Q6 s8 K& V
$attach = C::t('forum_attachment_n')->fetch_max_image('pid:'.$pid, 'pid', $pid);
7 \" R) o& q3 E! f& _4 R( E }
. R( t" y( u% m) R# @/ f/ _( D if(!$attach) {
5 g y6 b( d# Z2 S, N- D( y& ~ return false;
& k5 P# H5 g8 L% T: } }
( W4 F1 b( q$ W3 l, k if(empty($_G['forum']['ismoderator']) && $_G['uid'] != $attach['uid']) {5 O( e% t* c! `) G& l& Y* x/ W. j) E
return false;) p/ W% f1 p. u
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$pid = empty($pid) ? $attach['pid'] : $pid;% l% ?' _, {( E) o3 ]
$tid = empty($tid) ? $attach['tid'] : $tid;( n: r" d$ O$ q7 T
$picsource = ($attach['remote'] ? $_G['setting']['ftp']['attachurl'] : $_G['setting']['attachurl']).'forum/'.$attach['attachment'];
& z6 o$ T* O) y/ ]/ u } else {
8 l7 v5 ]; w7 R4 b& | $attachtable = 'pid:'.$pid;
& a0 Y: S& I& F0 m3 |' x $picsource = $imgurl;
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$basedir = !$_G['setting']['attachdir'] ? (DISCUZ_ROOT.'./data/attachment/') : $_G['setting']['attachdir'];
' v0 E' D; m I" n R) z $coverdir = 'threadcover/'.substr(md5($tid), 0, 2).'/'.substr(md5($tid), 2, 2).'/';
$ r8 G4 d, b# r dmkdir($basedir.'./forum/'.$coverdir);
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if(fileext($picsource) == 'gif') { // 判断是否是gif
4 V% }4 {, a! V. P copy($picsource, 'data/attachment/forum/'.$coverdir.$tid.'.gif'); // 直接把gif图片复制到缩略图目录,并改名为tid.gif* L' {0 v6 X- u* w0 G! W: s
$cover = C::t('forum_attachment_n')->count_image_by_id($attachtable, 'pid', $pid);# s& M8 {- V& S6 h
if($imgurl && empty($cover)) {
: g& x( ]% ^& }2 I* O8 A $cover = 1;' H/ M$ A% r1 l1 x! x/ j; @7 Q& `
}
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} else {
4 [" y/ E5 Y: s. | j0 E+ x9 M require_once libfile('class/image');( ^! M7 L, e! g8 I. s3 E
$image = new image();
* X% M+ ^8 M& b, o if($image->Thumb($picsource, 'forum/'.$coverdir.$tid.'.jpg', $_G['setting']['forumpicstyle']['thumbwidth'], $_G['setting']['forumpicstyle']['thumbheight'], 2)) {
4 j6 e# B$ u J4 U $remote = '';# p+ N! F/ I$ N5 P
if(getglobal('setting/ftp/on')) {
# H. w; A3 H- l7 s9 ~" B9 y if(ftpcmd('upload', 'forum/'.$coverdir.$tid.'.jpg')) {, V# s0 Q/ X. w; g* h
$remote = '-';
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$cover = C::t('forum_attachment_n')->count_image_by_id($attachtable, 'pid', $pid);
! V: c0 P+ _% R0 O if($imgurl && empty($cover)) {
1 V- g9 R8 J7 e0 u- ^; J $cover = 1;
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$cover = $remote.$cover;: C& y- e7 l, c% [& s
} else {
* _* {9 k9 N8 t return false;
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}
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if($countimg) {4 w' A; A' I( T) X9 E3 P
if(empty($cover)) {, e' N! A+ p! a
$thread = C::t('forum_thread')->fetch($tid);) d1 G/ S$ X& I
$oldcover = $thread['cover'];
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$cover = C::t('forum_attachment_n')->count_image_by_id('tid:'.$tid, 'pid', $pid);, ~( V( G7 P! U$ f0 @
if($cover) {% Q3 x! y8 V3 ^/ M' \3 u
$cover = $oldcover < 0 ? '-'.$cover : $cover;
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}
- [ A' E. f2 E: x. m9 ?+ A( W# O; C if($cover) {
7 {" _0 N3 L: D9 f1 N; m C::t('forum_thread')->update($tid, array('cover' => $cover));
: s! u( r5 D/ V. S6 Q e, q4 P return true;
2 Q7 g" B4 n' K) V8 m& g Q }
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完事了。
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