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<?php function & genRefInner() { $var = 1; yield $var; } function & genRefOuter() { return genRefInner(); } foreach(genRefOuter() as $i) { var_dump($i); }
Output for 5.5.25 - 5.5.38, 5.6.9 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.21, 7.4.0 - 7.4.10, 8.0.0alpha1 - beta3
Notice: Only variable references should be returned by reference in /in/sFR11 on line 9 int(1)
Output for 5.5.0 - 5.5.24, 5.6.0 - 5.6.8
int(1)
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '$var' (T_VARIABLE) in /in/sFR11 on line 5
Process exited with code 255.