3v4l.org

run code in 300+ PHP versions simultaneously
<?php function gen1() { yield 1; yield 2; } /** function yieldFrom() { $iter = gen1(); foreach($iter as $val) { yield $val; } } /**/ /**/ function gen2() { yield from gen1(); } /**/ $g = gen2(); foreach($g as $val) { var_dump($val); }
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 - 8.2.18, 8.3.0 - 8.3.6
int(1) int(2)
Output for 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
Parse error: syntax error, unexpected 'gen1' (T_STRING) in /in/4vQ8l on line 18
Process exited with code 255.
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '1' (T_LNUMBER) in /in/4vQ8l on line 4
Process exited with code 255.
preferences:
201.92 ms | 401 KiB | 274 Q