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  1. <?php
  2.  
  3. $internalEvents = array(
  4. 	array(
  5. 		"start" => "03/29/2016 12:00:00",
  6. 		"end" => "03/29/2016 13:00:00"
  7. 	),
  8. 	array(
  9. 		"start" => "03/29/2016 12:30:00",
  10. 		"end" => "03/29/2016 13:30:00"
  11. 	),
  12. 	array(
  13. 		"start" => "03/29/2016 13:00:00",
  14. 		"end" => "03/29/2016 14:00:00"
  15. 	),
  16. 	array(
  17. 		"start" => "03/29/2016 13:30:00",
  18. 		"end" => "03/29/2016 14:50:00"
  19. 	),
  20. 	array(
  21. 		"start" => "03/29/2016 14:00:00",
  22. 		"end" => "03/29/2016 15:00:00"
  23. 	),
  24. 	array(
  25. 		"start" => "03/29/2016 14:30:00",
  26. 		"end" => "03/29/2016 15:30:00"
  27. 	),
  28. 	array(
  29. 		"start" => "03/29/2016 15:00:00",
  30. 		"end" => "03/29/2016 16:00:00"
  31. 	),
  32. 	array(
  33. 		"start" => "03/29/2016 15:30:00",
  34. 		"end" => "03/29/2016 16:30:00"
  35. 	),
  36. 	array(
  37. 		"start" => "03/29/2016 16:00:00",
  38. 		"end" => "03/29/2016 17:00:00"
  39. 	)
  40. );
  41.  
  42. $externalEvents = array(
  43. 	array(
  44. 		"start" => "03/29/2016 08:00:00",
  45. 		"end" => "03/29/2016 12:00:00"
  46. 	),
  47. 	array(
  48. 		"start" => "03/29/2016 15:30:00",
  49. 		"end" => "03/29/2016 16:00:00"
  50. 	),
  51. 	array(
  52. 		"start" => "03/29/2016 13:30:00",
  53. 		"end" => "03/29/2016 14:15:00"
  54. 	)
  55. );
  56.  
  57. foreach($internalEvents as $internalEvent) {
  58.  
  59. 	$internalEventStart = new DateTime($internalEvent['start']);
  60. 	$internalEventEnd = new DateTime($internalEvent['end']);
  61.  
  62. 	$result = true;
  63.  
  64. 	echo "\nverifying " . $internalEventStart->format('Y-m-d H:i') . " - " . $internalEventEnd->format('Y-m-d H:i') . "\n";
  65.  
  66. 	foreach($externalEvents as $externalEvent) {
  67. 		$externalEventStart = new DateTime($externalEvent['start']);
  68. 		$externalEventEnd = new DateTime($externalEvent['end']);
  69.  
  70. 		// check if there are conflicts between internal and external events
  71. 		if ($internalEventStart >= $externalEventStart && $internalEventStart <= $externalEventEnd) {
  72. 			$result = false;
  73. 			echo "   problem 1: event is between busy time: " . "\n";
  74. 		}
  75.  
  76. 		if ($internalEventStart >= $externalEventStart && $internalEventStart <= $externalEventEnd && $externalEventEnd <= $internalEventEnd) {
  77. 			$result = false;
  78. 			echo "   problem 2: event starts during busy time: " . "\n";
  79. 		}
  80.  
  81. 		if ($internalEventStart <= $externalEventStart && $externalEventStart <= $internalEventEnd && $internalEventEnd <= $externalEventEnd) {
  82. 			$result = false;
  83. 			echo "   problem 3: event stops during busy time: " . "\n";
  84. 		}
  85.  
  86. 		if (($internalEventStart <= $externalEventStart) && ($externalEventStart <= $externalEventEnd) && ($externalEventEnd <= $internalEventEnd)) {
  87. 			$result = false;
  88. 			echo "   problem 4: event during busy time: " . "\n";
  89. 		}
  90.  
  91. 		if (($internalEventStart <= $internalEventEnd) && ($internalEventEnd <= $externalEventStart) && ($externalEventStart <= $externalEventEnd)) {
  92. 			$result = false;
  93. 			echo "   problem 5: event during busy time: " . "\n";
  94. 		}
  95. 	}
  96.  
  97. 	if($result) {
  98. 		echo "   result: OK\n";
  99. 	} else {
  100. 		echo "   result: NOT OK \n";
  101. 	}
  102. }
Success #stdin #stdout 0.03s 52432KB
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verifying 2016-03-29 12:00 - 2016-03-29 13:00
   problem 1: event is between busy time: 
   problem 2: event starts during busy time: 
   problem 5: event during busy time: 
   problem 5: event during busy time: 
   result: NOT OK 

verifying 2016-03-29 12:30 - 2016-03-29 13:30
   problem 5: event during busy time: 
   problem 3: event stops during busy time: 
   problem 5: event during busy time: 
   result: NOT OK 

verifying 2016-03-29 13:00 - 2016-03-29 14:00
   problem 5: event during busy time: 
   problem 3: event stops during busy time: 
   result: NOT OK 

verifying 2016-03-29 13:30 - 2016-03-29 14:50
   problem 5: event during busy time: 
   problem 1: event is between busy time: 
   problem 2: event starts during busy time: 
   problem 4: event during busy time: 
   result: NOT OK 

verifying 2016-03-29 14:00 - 2016-03-29 15:00
   problem 5: event during busy time: 
   problem 1: event is between busy time: 
   problem 2: event starts during busy time: 
   result: NOT OK 

verifying 2016-03-29 14:30 - 2016-03-29 15:30
   problem 3: event stops during busy time: 
   problem 5: event during busy time: 
   result: NOT OK 

verifying 2016-03-29 15:00 - 2016-03-29 16:00
   problem 3: event stops during busy time: 
   problem 4: event during busy time: 
   result: NOT OK 

verifying 2016-03-29 15:30 - 2016-03-29 16:30
   problem 1: event is between busy time: 
   problem 2: event starts during busy time: 
   problem 4: event during busy time: 
   result: NOT OK 

verifying 2016-03-29 16:00 - 2016-03-29 17:00
   problem 1: event is between busy time: 
   problem 2: event starts during busy time: 
   result: NOT OK
https://ideone.com/1GbokS
Check if internal and external events collide
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
secret

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