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run code in 300+ PHP versions simultaneously
<?php $x = $foo--; var_dump($x); var_dump($foo);
Output for 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
Warning: Undefined variable $foo in /in/Bnb2D on line 3 Warning: Decrement on type null has no effect, this will change in the next major version of PHP in /in/Bnb2D on line 3 NULL NULL
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 8.1.3 - 8.1.33, 8.2.10 - 8.2.29
Warning: Undefined variable $foo in /in/Bnb2D on line 3 NULL NULL

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