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  1. <?php
  2.  
  3. function getLine($h, $line, &$index) {
  4. 	if (isset($index[$line])) {
  5. 		fseek($h, $index[$line], SEEK_SET);
  6. 	} else {
  7. 		fseek($h, end($index), SEEK_SET);
  8. 		fgets($h, 4096);
  9. 		$i = key($index)+1;
  10. 		for(; $i<$line; ++$i) {
  11. 			$index[] = ftell($h);
  12. 			fgets($h, 4096);
  13. 		}
  14. 	}
  15. 	return fgets($h, 4096);
  16. }
  17.  
  18. $h = fopen("plik.txt", "r");
  19.  
  20. $index = array(0);
  21. echo getLine($h, 5, $index);
  22. echo getLine($h, 3, $index);
  23. echo getLine($h, 9, $index);
  24. echo getLine($h, 7, $index);
  25. echo getLine($h, 8, $index);
  26. echo getLine($h, 9, $index);
  27. echo getLine($h, 10, $index);
  28. echo getLine($h, 0, $index);
  29.  
  30. ?>
Success #stdin #stdout 0.03s 13064KB
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Standard input is empty
stdout
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Warning: fopen(plik.txt): failed to open stream: No such file or directory in /home/g4OuDH/prog.php on line 18

Warning: fseek(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 7

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 8

Warning: ftell(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 11

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 12

Warning: ftell(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 11

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 12

Warning: ftell(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 11

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 12

Warning: ftell(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 11

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 12

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 15

Warning: fseek(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 5

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 15

Warning: fseek(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 7

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 8

Warning: ftell(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 11

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 12

Warning: ftell(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 11

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 12

Warning: ftell(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 11

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 12

Warning: ftell(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 11

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 12

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 15

Warning: fseek(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 5

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 15

Warning: fseek(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 5

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 15

Warning: fseek(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 7

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 8

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 15

Warning: fseek(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 7

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 8

Warning: ftell(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 11

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 12

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 15

Warning: fseek(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 5

Warning: fgets(): supplied argument is not a valid stream resource in /home/g4OuDH/prog.php on line 15
https://ideone.com/kK4Qu
language:
PHP (php 7.3.5)
created:
13 years ago
visibility:
secret

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