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<?php function xs() { for ($i = 0; $i < 5; $i++) { yield $i; } } $a = xs(); foreach($a as $b) { echo $b.','; echo next($a).','; echo $b."\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
0, Deprecated: next(): Calling next() on an object is deprecated in /in/uIkHG on line 14 ,0 1, Deprecated: next(): Calling next() on an object is deprecated in /in/uIkHG on line 14 ,1 2, Deprecated: next(): Calling next() on an object is deprecated in /in/uIkHG on line 14 ,2 3, Deprecated: next(): Calling next() on an object is deprecated in /in/uIkHG on line 14 ,3 4, Deprecated: next(): Calling next() on an object is deprecated in /in/uIkHG on line 14 ,4

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