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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; } $example = [ ['schools' => '001|002|003'], ['schools' => '004|005|006'], ['schools' => '007|008|009'], ]; var_dump( flatMap($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(9) { [0]=> string(3) "001" [1]=> string(3) "002" [2]=> string(3) "003" [3]=> string(3) "004" [4]=> string(3) "005" [5]=> string(3) "006" [6]=> string(3) "007" [7]=> string(3) "008" [8]=> string(3) "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(9) { [0]=> string(3) "001" [1]=> string(3) "002" [2]=> string(3) "003" [3]=> string(3) "004" [4]=> string(3) "005" [5]=> string(3) "006" [6]=> string(3) "007" [7]=> string(3) "008" [8]=> string(3) "009" }
Output for 5.6.0 - 5.6.40
Parse error: syntax error, unexpected ':', expecting '{' in /in/X2AqR on line 3
Process exited with code 255.
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