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<?php $rows = [ (object)['group' => 'a', 'other_col' => 'a'], (object)['group' => 'b', 'other_col' => 'a'], (object)['group' => 'a', 'other_col' => 'a'], (object)['group' => 'a', 'other_col' => 'a'], (object)['group' => 'c', 'other_col' => 'a'], ]; $groups = array_count_values(array_column($rows, 'group')); print_r($groups);
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 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 - 8.3.7
Array ( [a] => 3 [b] => 1 [c] => 1 )
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 ( [a] => 3 [b] => 1 [c] => 1 )
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Array ( )
Output for 5.4.0 - 5.4.45
Fatal error: Call to undefined function array_column() in /in/XiXec on line 11
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/XiXec on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/XiXec on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/XiXec on line 3
Process exited with code 255.
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244.43 ms | 401 KiB | 462 Q