Implement the Calendar function in PHP for blog Calendar problems

The following is the implementation code. if you forget where the code was obtained, it may be Discuz! The personal space is now posted to share with you the following implementation code. if you forget where to find the code, it is probably Discuz! In the personal space
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Function calendarnew ($ starttime = 0 ){
Global $ db, $ tablepre, $ timestamp, $ site_timeoffset, $ site_dateformat, $ curtime;


$ Starttime = $ starttime? $ Starttime: $ timestamp;
$ Curtime = gmdate ($ site_dateformat, $ starttime + $ timeoffset * 3600 );


$ Pendtime = $ starttime-(gmdate ('J', $ starttime + $ timeoffset * 3600)-1) * 86400-($ starttime + $ timeoffset * 3600) % 86400;
$ Pstarttime = $ pendtime-gmdate ('t', $ pendtime + $ timeoffset * 3600-1) * 86400;


$ Nstarttime = $ pendtime + gmdate ('t', $ pendtime + $ timeoffset * 3600 + 1) * 86400;
$ Nendtime = $ nstarttime + gmdate ('t', $ nstarttime + $ timeoffset * 3600 + 1) * 86400;


List ($ skip, $ dim) = explode ('-', gmdate ('W-t', $ pendtime + $ timeoffset * 3600 + 1 ));
$ Rows = ceil ($ skip + $ dim)/7 );


$ Blogs = array ();
$ Query = $ db-> query ("SELECT dateline FROM {$ tablepre} vitaitems WHERE dateline BETWEEN '$ pendtime' AND '$ nstarttime '");
While ($ blog = $ db-> fetch_array ($ query )){
$ Day = gmdate ('J', $ blog ['Dateline '] + $ timeoffset X 3600 );
! Isset ($ blogs [$ day])? $ Blogs [$ day] = array ('num' => 1, 'Dateline '=> $ blog ['Dateline']-$ blog ['Dateline '] % 86400 ): $ blogs [$ day] ['num'] ++;
}
$ Cal = '';
For ($ row = 0; $ row <$ rows; $ row ++ ){
$ Cal. ='';
For ($ col = 0; $ col <7; $ col ++ ){
$ Cur = $ row * 7 + $ col-$ skip + 1;
$ Curtd = $ row * 7 + $ col <$ skip | $ cur> $ dim? '': $ Cur;
If (! Isset ($ blogs [$ cur]) {
$ Cal. =''. $ Curtd .'';
} Else {
$ Cal. =' '. $ Cur .'';
}
}
$ Cal. = '';
}
Return $ cal;
}