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<?php trait Foo { public const CONSTANT = 1; public function bar(): int { return Foo::CONSTANT; // Fatal error } } class Bar { use Foo; } var_dump(Bar::CONSTANT); // 1 $bar = new Bar(); $bar->bar();
Output for 8.2.22 - 8.2.29, 8.3.5 - 8.3.27, 8.4.1 - 8.4.14, 8.5.0
int(1) Fatal error: Uncaught Error: Cannot access trait constant Foo::CONSTANT directly in /in/11of1:9 Stack trace: #0 /in/11of1(20): Bar->bar() #1 {main} thrown in /in/11of1 on line 9
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 8.3.28
/bin/php-8.3.28: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.3.28)
Process exited with code 1.
Output for 8.1.30 - 8.1.33
Fatal error: Traits cannot have constants in /in/11of1 on line 5
Process exited with code 255.
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