3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(count((array) null), count(null)); var_dump(count((array) false), count(false));
Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /in/WUgRo:3 Stack trace: #0 {main} thrown in /in/WUgRo on line 3
Process exited with code 255.
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 8.0.0 - 8.0.9
Fatal error: Uncaught TypeError: count(): Argument #1 ($var) must be of type Countable|array, null given in /in/WUgRo:3 Stack trace: #0 {main} thrown in /in/WUgRo on line 3
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: count(): Parameter must be an array or an object that implements Countable in /in/WUgRo on line 3 int(0) int(0) Warning: count(): Parameter must be an array or an object that implements Countable in /in/WUgRo on line 4 int(1) int(1)
Output for 7.1.0 - 7.1.20
int(0) int(0) int(1) int(1)

preferences:
47.56 ms | 411 KiB | 5 Q