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<?php function flatMap (array $array, callable $function): array { $output = []; foreach ($array as $value) { $tmp = $function($value); foreach ($tmp as $row) { $output[] = $row; } } return $output; } $example = [ ['schools' => '001|002|003'], ['schools' => '004|005|006'], ['schools' => '007|008|009'], ]; print_r( flatMap($example, function ($record) { return explode('|', $record['schools']); }) );
Output for 7.0.0 - 7.0.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Array ( [0] => 001 [1] => 002 [2] => 003 [3] => 004 [4] => 005 [5] => 006 [6] => 007 [7] => 008 [8] => 009 )
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] => 001 [1] => 002 [2] => 003 [3] => 004 [4] => 005 [5] => 006 [6] => 007 [7] => 008 [8] => 009 )
Output for 5.6.0 - 5.6.40
Parse error: syntax error, unexpected ':', expecting '{' in /in/95qoJ on line 3
Process exited with code 255.
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217.99 ms | 401 KiB | 290 Q