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  1. <?php
  2.  
  3. $strings = ["folders/folder1/folder5/../../folder2", "folders/folder1/../../../folder2", "folders/folder1/folder5/../folder2"];
  4.  
  5. function make_path($string) {
  6. 	$parts = explode("/", $string);
  7. 	$new_folder = [];
  8. 	for ($i=0; $i<count($parts); $i++) {
  9. 		if (($parts[$i] == "..") and count($new_folder) >= 1) {
  10. 			array_pop($new_folder);
  11. 		} else {
  12. 			$new_folder[] = $parts[$i];
  13. 		}
  14. 	}
  15. 	return implode("/", $new_folder);
  16. }
  17.  
  18. $new_folders = array_map('make_path', $strings);
  19. print_r($new_folders);
  20. ?>
Success #stdin #stdout 0.02s 26204KB
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stdin
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Standard input is empty
stdout
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Array
(
    [0] => folders/folder2
    [1] => ../folder2
    [2] => folders/folder1/folder2
)
https://ideone.com/mrCAkH
language:
PHP (php 7.3.5)
created:
3 years ago
visibility:
public

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