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<?php $myarray = array( [ 'messageId' => '5ACE9D8841', 'sender' => 'john@doe.com', ], [ 'messageId' => '7EE67D8170', 'sender' => 'dan@doe.com', ], [ 'messageId' => '8095FD8836', 'sender' => 'cat@doe.com', ], [ 'messageId' => ['brokenId' => '8095FD8836'], 'sender' => 'cat@doe.com', ], [ 'status' => 'wrong row', ], [ 'messageId' => '7EE67D8170', 'dest' => 'mitch@doe.com', 'status' => 'sent', 'date' => '2021-02-01 11:06:55', ], ); $result = array_reduce($myarray, function($rows, $item){ if (array_key_exists('messageId', $item) && is_scalar($item['messageId'])) { $rows = array_replace_recursive($rows ?? [], [$item['messageId'] => $item]); } return $rows; }); $result = array_values($result); print_r($result);
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 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
Array ( [0] => Array ( [messageId] => 5ACE9D8841 [sender] => john@doe.com ) [1] => Array ( [messageId] => 7EE67D8170 [sender] => dan@doe.com [dest] => mitch@doe.com [status] => sent [date] => 2021-02-01 11:06:55 ) [2] => Array ( [messageId] => 8095FD8836 [sender] => cat@doe.com ) )
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 ( [0] => Array ( [messageId] => 5ACE9D8841 [sender] => john@doe.com ) [1] => Array ( [messageId] => 7EE67D8170 [sender] => dan@doe.com [dest] => mitch@doe.com [status] => sent [date] => 2021-02-01 11:06:55 ) [2] => Array ( [messageId] => 8095FD8836 [sender] => cat@doe.com ) )

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