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@ 2019-07-18T11:22:34Z

<?php

$books_sorted = array(
     0 => array(
        "title" => "In Search of Lost Time"
     ),
     1 => array(
        "title" => "Don Quixote"
     ),
     2 => array(
        "title" => "The Great Gatsby"
     )
);

$books_available = array(
      0 => array(
         "title" => "Moby Dick"
      ),
      1 => array(
         "title" => "In Search of Lost Time"
      ),
      2 => array(
         "title" => "The Great Gatsby"
      ),
      3 => array(
         "title" => "War and Peace"
      )
);

$sorted_titles = array_column($books_sorted, 'title');
$available_titles = array_column($books_available, 'title');

$third_array = array_merge(
    array_filter($books_sorted, function($e) use ($available_titles) {
        return in_array($e['title'], $available_titles);
    }),
    array_filter($books_available, function($e) use ($sorted_titles) {
        return !in_array($e['title'], $sorted_titles);
    })
);

print_r($third_array);

Output for 7.1.0 - 7.1.33, 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 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: Array ( [0] => Array ( [title] => In Search of Lost Time ) [1] => Array ( [title] => The Great Gatsby ) [2] => Array ( [title] => Moby Dick ) [3] => Array ( [title] => War and Peace ) )
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.

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