3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo () { yield 'hello'; yield ' '; yield 'world!'; yield bar(); } function bar () { yield 'again'; yield ' '; yield 'yeah'; } foreach (foo() as $str) { echo $str."\n"; }
Output for 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
hello world! Fatal error: Uncaught Error: Object of class Generator could not be converted to string in /in/BB26K:18 Stack trace: #0 {main} thrown in /in/BB26K on line 18
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
hello world! Recoverable fatal error: Object of class Generator could not be converted to string in /in/BB26K on line 18
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
hello world! Catchable fatal error: Object of class Generator could not be converted to string in /in/BB26K on line 18
Process exited with code 255.
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected ''hello'' (T_CONSTANT_ENCAPSED_STRING) in /in/BB26K on line 4
Process exited with code 255.
preferences:
254.7 ms | 401 KiB | 376 Q