3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo(sprintf("('1%1$\')", 'a')); echo(sprintf("('1%\')", 'a','b')); echo(sprintf("('1%')", 'a','b')); echo(sprintf("('1%)", 'a','b'));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught ValueError: Unknown format specifier "\" in /in/UHpYE:2 Stack trace: #0 /in/UHpYE(2): sprintf('('1%1$\\')', 'a') #1 {main} thrown in /in/UHpYE on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 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
('1')('1')('1('1
preferences:
291.5 ms | 405 KiB | 400 Q