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<?php // define class constant linking to a not defined constant const CONST_FOO = FOO; const CONST_BAR = BAR; echo "Define the linked constant AFTER reading:\n"; CONST_FOO; define('FOO', 'Value of FOO'); var_dump(CONST_FOO); echo "Define the linked constant BEFORE reading:\n"; define('BAR', 'Value of BAR'); var_dump(CONST_BAR);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Undefined constant "FOO" in /in/TYWog:5 Stack trace: #0 {main} thrown in /in/TYWog on line 5
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant FOO - assumed 'FOO' (this will throw an Error in a future version of PHP) in /in/TYWog on line 5 Warning: Use of undefined constant BAR - assumed 'BAR' (this will throw an Error in a future version of PHP) in /in/TYWog on line 8 Define the linked constant AFTER reading: string(3) "FOO" Define the linked constant BEFORE reading: string(3) "BAR"
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25
Notice: Use of undefined constant FOO - assumed 'FOO' in /in/TYWog on line 5 Notice: Use of undefined constant BAR - assumed 'BAR' in /in/TYWog on line 8 Define the linked constant AFTER reading: string(3) "FOO" Define the linked constant BEFORE reading: string(3) "BAR"
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_CONST in /in/TYWog 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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_CONST in /in/TYWog on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/TYWog on line 5
Process exited with code 255.
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