3v4l.org

run code in 300+ PHP versions simultaneously
<?php $xml = new \SimpleXMLElement('<foo>aaa</foo>'); var_dump(++$xml[0]); $xml = new \SimpleXMLElement('<foo>aaa</foo>'); var_dump(--$xml[0]);
Output for 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
int(1) int(-1)
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29
Fatal error: Uncaught TypeError: Cannot increment SimpleXMLElement in /in/DVmtc:4 Stack trace: #0 {main} thrown in /in/DVmtc on line 4
Process exited with code 255.
preferences:
79.73 ms | 409 KiB | 5 Q