3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test(){ $x = array( 'first' => 'a', 'second' => 'y', 'thrid' => 'z' ); foreach ($x as $key=>$value){ $value += 'im added'; } return $value; } $y = test(); echo $y['first'];
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: Unsupported operand types: string + string in /in/rqr7V:11 Stack trace: #0 /in/rqr7V(15): test() #1 {main} thrown in /in/rqr7V on line 11
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Warning: A non-numeric value encountered in /in/rqr7V on line 11 Warning: A non-numeric value encountered in /in/rqr7V on line 11 Warning: A non-numeric value encountered in /in/rqr7V on line 11 Warning: A non-numeric value encountered in /in/rqr7V on line 11 Warning: A non-numeric value encountered in /in/rqr7V on line 11 Warning: A non-numeric value encountered in /in/rqr7V on line 11 Notice: Trying to access array offset on value of type int in /in/rqr7V on line 16
Output for 7.1.0 - 7.1.24, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33
Warning: A non-numeric value encountered in /in/rqr7V on line 11 Warning: A non-numeric value encountered in /in/rqr7V on line 11 Warning: A non-numeric value encountered in /in/rqr7V on line 11 Warning: A non-numeric value encountered in /in/rqr7V on line 11 Warning: A non-numeric value encountered in /in/rqr7V on line 11 Warning: A non-numeric value encountered in /in/rqr7V on line 11
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.32
preferences:
202.81 ms | 402 KiB | 289 Q