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run code in 150+ php & hhvm versions
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<?php class Foo { const FOO = FOO; } class Bar { const BAR = BAR; } echo "Define the linked constant AFTER reading:\n"; Foo::FOO; define('FOO', 'Value of FOO'); var_dump(Foo::FOO); echo "Define the linked constant BEFORE reading:\n"; define('BAR', 'Value of BAR'); var_dump(Bar::BAR);
Output for 5.5.0 - 5.6.28, 7.0.0 - 7.1.0
Define the linked constant AFTER reading: Notice: Use of undefined constant FOO - assumed 'FOO' in /in/Gkedu on line 12 string(3) "FOO" Define the linked constant BEFORE reading: string(12) "Value of BAR"
Output for hhvm-3.10.0 - 3.12.0
Define the linked constant AFTER reading: Notice: Use of undefined constant FOO - assumed 'FOO' in /in/Gkedu on line 4 string(3) "FOO" Define the linked constant BEFORE reading: string(12) "Value of BAR"
Output for 5.0.0 - 5.4.45
Define the linked constant AFTER reading: string(3) "FOO" Define the linked constant BEFORE reading: string(12) "Value of BAR"
Output for 4.4.2 - 4.4.9
<br /> <b>Parse error</b>: syntax error, unexpected T_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in <b>/in/Gkedu</b> on line <b>4</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
<br /> <b>Parse error</b>: parse error, unexpected T_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in <b>/in/Gkedu</b> on line <b>4</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.4
<br /> <b>Parse error</b>: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in <b>/in/Gkedu</b> on line <b>4</b><br />
Process exited with code 255.