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<?php // define class constant linking to a not defined constant class Foo { const FOO = FOO; } class Bar { const BAR = BAR; } echo 'Define the linked constant AFTER reading: ' . PHP_EOL; Foo::FOO; define('FOO', 'Value of FOO'); var_dump(Foo::FOO); echo '####################' . PHP_EOL; echo 'Define the linked constant BEFORE reading: ' . PHP_EOL; define('BAR', 'Value of BAR'); var_dump(Bar::BAR);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Define the linked constant AFTER reading: Fatal error: Uncaught Error: Undefined constant "FOO" in /in/dcVrq:13 Stack trace: #0 {main} thrown in /in/dcVrq on line 13
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
Define the linked constant AFTER reading: Warning: Use of undefined constant FOO - assumed 'FOO' (this will throw an Error in a future version of PHP) in /in/dcVrq on line 13 string(3) "FOO" #################### Define the linked constant BEFORE reading: string(12) "Value of BAR"
Output for 5.0.2 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20
Define the linked constant AFTER reading: Notice: Use of undefined constant FOO - assumed 'FOO' in /in/dcVrq on line 13 string(3) "FOO" #################### Define the linked constant BEFORE reading: string(12) "Value of BAR"
Output for 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/dcVrq on line 12 Define the linked constant AFTER reading: PHP_EOL Notice: Use of undefined constant FOO - assumed 'FOO' in /in/dcVrq on line 13 string(3) "FOO" Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/dcVrq on line 17 ####################PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/dcVrq on line 19 Define the linked constant BEFORE reading: PHP_EOLstring(12) "Value of BAR"
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/dcVrq on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/dcVrq on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/dcVrq on line 5
Process exited with code 255.
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