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<?php function yf() { yield from 23; } $g = yf(); foreach($g as $val) { var_dump($val); }
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Can use "yield from" only with arrays and Traversables in /in/1XXtM:4 Stack trace: #0 /in/1XXtM(8): yf() #1 {main} thrown in /in/1XXtM on line 4
Process exited with code 255.

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