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<?php function chain($input) { foreach ($input as $arr) { foreach ($arr as $v) { yield $v; } } } $it = chain([ ['a', 'b'], ['c', 'd', 'e'], ['f', 'g', 'h', 'i'] ]); echo implode(', ', iterator_to_array($it));
Output for 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 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 - 8.3.6
a, b, c, d, e, f, g, h, i
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '$v' (T_VARIABLE) in /in/mUDjV on line 5
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 T_VARIABLE in /in/mUDjV on line 5
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 T_VARIABLE in /in/mUDjV on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/mUDjV on line 5
Process exited with code 255.
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227.12 ms | 401 KiB | 358 Q