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<?php $items = ['what', 'this' => ['is', 'a' => 'nested', 'array' => ['with', 'a', 'bunch' => ['of' => ['values', 'some', 'of', 'which', 'dont', 'have', 'an', 'a']]]]]; function processItems($items) { echo "Start Iteration\n"; foreach ($items as $value) { if (is_array($value)) { echo "Found an array, begin recursive call\n"; yield from processItems($value); continue; } yield $value; } } foreach (processItems($items) as $item) { echo $item . "\n"; }
Output for 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 - 8.2.19, 8.3.0 - 8.3.7
Start Iteration what Found an array, begin recursive call Start Iteration is nested Found an array, begin recursive call Start Iteration with a Found an array, begin recursive call Start Iteration Found an array, begin recursive call Start Iteration values some of which dont have an a
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Parse error: syntax error, unexpected 'processItems' (T_STRING) in /in/tHRqg on line 13
Process exited with code 255.
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected 'from' (T_STRING) in /in/tHRqg on line 13
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/tHRqg 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/tHRqg on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/tHRqg on line 3
Process exited with code 255.
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196.32 ms | 401 KiB | 358 Q