3v4l.org

run code in 300+ PHP versions simultaneously
<?php $first_number = 10; $first_number = += 2; echo first_number; ?>
Output for 5.4.0 - 5.4.23
Parse error: syntax error, unexpected '+=' (T_PLUS_EQUAL) in /in/8LmD7 on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_PLUS_EQUAL in /in/8LmD7 on line 4
Process exited with code 255.
preferences:
195.87 ms | 1395 KiB | 60 Q