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run code in 300+ PHP versions simultaneously
<?php class Foo { public function __toString() { static $i = 0; return (string) $i++; } } function test(string $foo = new Foo() . '') { var_dump($foo); } test(); test(); test();
Output for 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
string(1) "0" string(1) "1" string(1) "2"
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
string(1) "0" string(1) "0" string(1) "0"
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30
Fatal error: Constant expression contains invalid operations in /in/CNYqh on line 10
Process exited with code 255.

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