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  1. <?php
  2. 	$data = [
  3. 		[
  4. 			'indexname0' => 'group-id',
  5. 			'indexname1' => 'name of 1st-item',
  6. 			'indexname2' => 'state of 1st-item',
  7. 			'indexname3' => 93.42,
  8. 			'indexname4' => 'unit of 1st-item',
  9. 		],
  10. 		[
  11. 			'indexname0' => 'group-id',
  12. 			'indexname1' => 'name of 1st-item',
  13. 			'indexname2' => 'state of 1st-item',
  14. 			'indexname3' => 93.12,
  15. 			'indexname4' => 'unit of 1st-item',
  16. 		],
  17. 		[
  18. 			'indexname0' => 'group-id',
  19. 			'indexname1' => 'name of 1st-item',
  20. 			'indexname2' => 'state of 1st-item',
  21. 			'indexname3' => 89.92,
  22. 			'indexname4' => 'unit of 1st-item',
  23. 		],
  24. 		[
  25. 			'indexname0' => 'group-id',
  26. 			'indexname1' => 'name of 1st-item',
  27. 			'indexname2' => 'state of 1st-item',
  28. 			'indexname3' => 89.70,
  29. 			'indexname4' => 'unit of 1st-item',
  30. 		],
  31. 	];
  32.  
  33.  
  34. 	foreach($data as $index => $value) {
  35. 		if (!isset($data[$index+1])) continue;
  36. 		echo $data[$index+1]['indexname3'] - $data[$index]['indexname3'].'<br />';
  37. 	}
  38.  
  39.  
Success #stdin #stdout 0.02s 25524KB
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Standard input is empty
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-0.3<br />-3.2<br />-0.22<br />
https://ideone.com/vHvOmo
language:
PHP (php 7.3.5)
created:
2 years ago
visibility:
public

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