Online PHP editor | output for 0F1IM

@ 2020-03-08T14:41:55Z

<?php
$input = <<<STR
Maths
Maths|Algebre
Maths|Algebre|Algebre 1
Maths|Algebre|Algebre 2
Maths|Algebre|Algebre 3
Maths|Analyse
Maths|Analyse|Analyse 1
Maths|Analyse|Analyse 2
Maths|Probabilité
physics
STR;

function cleanupLines(array $lines): array
{
  foreach ($lines as $index => $line) {
    if ($index > 0 && strpos($line, $lines[$index - 1]) === 0) {
      unset($lines[$index - 1]);
    }
  }
  return $lines;
}

function lineToArray(array $lineParts): array
{
  if (count($lineParts) > 1) {
    return [$lineParts[0] => lineToArray(array_slice($lineParts, 1))];
  }
  return $lineParts;
}

$lines = preg_split('/\r?\n/', $input);
$lines = cleanupLines($lines);

$result = array_reduce($lines, static function (array $result, string $line): array {
  $lineParts = explode('|', $line);
  $arrayPart = lineToArray($lineParts);
  return array_merge_recursive($result, $arrayPart);
}, []);

print_r($result);

Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14, 8.5.0: Array ( [Maths] => Array ( [Algebre] => Array ( [0] => Algebre 1 [1] => Algebre 2 [2] => Algebre 3 ) [Analyse] => Array ( [0] => Analyse 1 [1] => Analyse 2 ) [0] => Probabilité ) [0] => physics )
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 8.3.28: /bin/php-8.3.28: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.3.28)
Process exited with code 1.

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