php - Comparing start and end time with other time 'blocks' -

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i'm working fullcalendar , unable see solution problem. i've tried many things. stackoverflow posts , own ideas (based on posts).

the problem/challenge

when add event on fullcalendar. adds calendar , thats want. there should restriction on overlapping events. there no overlapping events.

my question extremly similar determining if 2 time ranges overlap @ point

what have

a list of events in array fetch database.

the database

enter image description here

i've start , endtime event drop in format available (e.g. timestamp/date)

example

enter image description here

finially code

efficient way check if current date between 2 dates (years dont matter) based on accepted answer here

if($error == false){     foreach($events $skey=>$dbevent){          if(strtotime($dbevent['start_time']) == strtotime($event->starttime))         {             $skey = 0;             break;         }         if((strtotime($dbevent['start_time']) < strtotime($event->starttime)) && (strtotime($dbevent['end_time']) > strtotime($event->starttime))){             break;         }else{             $skey = null;         }     }      foreach($events $ekey=>$dbevent){          if(strtotime($dbevent['end_time']) == strtotime($event->endtime))         {             $ekey = 0;             break;         }         if((strtotime($dbevent['end_time']) < strtotime($event->endtime)) && (strtotime($dbevent['start_time']) > strtotime($event->endtime))){             break;         }else{             $ekey = null;         }     }       //checking if there event overlapping     if($skey ==null && $skey != '0'){         $error = false;     }else{         $error = true;         $errormessage = 'bezet';     }      if($ekey ==null && $ekey != '0'){         $error = false;     }else{         $error = true;         $errormessage = 'bezet';     } }

there no problems executing code. doesn't give errors when expect them. i'm 100% sure there lot of code written shorter. refactor after problem works.

my brain stuck @ problem because if start not overlapping , end isn't overlapping in first scenario. i've tried many solutions maybe i'm missing point.

what work when start , end time exact same event posted.

any tips / hints / comments appreciated.

using fullcalendar fork:

https://github.com/seankenny/fullcalendar

https://github.com/arshaw/fullcalendar

after rereading linked stackoverflow questions... changed code this:

foreach($events $dbevent){         $dbeventstart = strtotime($dbevent['start_time']);         $dbeventend   = strtotime($dbevent['end_time']);         $evstart      = strtotime($event->starttime);         $evend        = strtotime($event->endtime);          if (($evstart < $dbeventend) && ($evend > $dbeventstart)) {             $error = true;             $errormessage = 'het lijkt te werken';           }     }

the evstart / evend (are newly created events) , dbevent existing events.

this magic fixed problem :)


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