3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function &foo() { $x = array(1,2,3); yield $x; echo "Gen: "; var_dump($x); $x[] = 99; return $x; } $rets = array(); $gen = foo(); foreach ($gen as &$val) { var_dump($val); $val[] = 42; $rets[] =& $val; } $rv =& $gen->getReturn(); var_dump($rv); $rets[0][] = 100; var_dump($rv); $rv[] = 200; var_dump($gen->getReturn()); var_dump($rets);
based on h2fdo
Output for 7.0.0 - 7.2.0
array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } Gen: array(4) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(42) } Notice: Only variables should be assigned by reference in /in/H44ko on line 18 array(5) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(42) [4]=> int(99) } array(5) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(42) [4]=> int(99) } array(5) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(42) [4]=> int(99) } array(1) { [0]=> &array(6) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(42) [4]=> int(99) [5]=> int(100) } }
Output for 5.5.24 - 5.6.28
Fatal error: Generators cannot return values using "return" in /in/H44ko on line 8
Process exited with code 255.
Output for 5.4.1 - 5.4.45
Parse error: syntax error, unexpected '$x' (T_VARIABLE) in /in/H44ko on line 5
Process exited with code 255.
Output for 5.3.18 - 5.3.29
Parse error: syntax error, unexpected T_VARIABLE in /in/H44ko on line 5
Process exited with code 255.