3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = ['' => 'empty', 0 => 'zero', 1 => 'one']; var_dump($arr[false]); var_dump($arr[true]); var_dump((string) false); var_dump($arr[1.1]);
Output for 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
string(4) "zero" string(3) "one" string(0) "" Deprecated: Implicit conversion from float 1.1 to int loses precision in /in/TrG4u on line 10 string(3) "one"
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 8.0.1 - 8.0.30
string(4) "zero" string(3) "one" string(0) "" string(3) "one"
preferences:
115.59 ms | 408 KiB | 5 Q