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<?php $articles = [ [ "id" => 0, "title" => "lorem", "reference" => "A" ], [ "id" => 1, "title" => "ipsum", "reference" => "B" ], [ "id" => 2, "title" => "dolor", "reference" => "C" ], [ "id" => 3, "title" => "sit", "reference" => "A" ] ]; $found = []; foreach ($articles as $index => ['reference' => $ref]) { if (!isset($found[$ref])) { $found[$ref] = $index; } else { unset($articles[$index], $articles[$found[$ref]]); } } var_export($articles);
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
array ( 1 => array ( 'id' => 1, 'title' => 'ipsum', 'reference' => 'B', ), 2 => array ( 'id' => 2, 'title' => 'dolor', 'reference' => 'C', ), )
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array ( 1 => array ( 'id' => 1, 'title' => 'ipsum', 'reference' => 'B', ), 2 => array ( 'id' => 2, 'title' => 'dolor', 'reference' => 'C', ), )
Output for 5.6.0
Parse error: syntax error, unexpected '[' in /in/cRU6e on line 27
Process exited with code 255.
Output for 4.3.0
Parse error: parse error, unexpected '[' in /in/cRU6e on line 3
Process exited with code 255.
preferences:
134.43 ms | 401 KiB | 158 Q