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<?php class MyParent { const NAVIGATION = 'nav'; public static function getUri() { static $uri = null; if ($uri === null) { echo 'null<br>'; $uri = 'test '.self::NAVIGATION; } return $uri; } } class FirstChild extends MyParent { } class SecondChild extends MyParent { const NAVIGATION = 'childnav'; } $first = new FirstChild(); $second = new SecondChild(); echo '<pre>', var_export($first->getUri(), true), '</pre>'; echo '<pre>', var_export($second->getUri(), true), '</pre>'; echo '<pre>', var_export($first->getUri(), true), '</pre>'; echo '<pre>', var_export($second->getUri(), true), '</pre>';
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
<pre>null<br>'test nav'</pre><pre>'test nav'</pre><pre>'test nav'</pre><pre>'test nav'</pre>
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 <pre>null<br>'test nav'</pre><pre>'test nav'</pre><pre>'test nav'</pre><pre>'test nav'</pre>
Output for 5.0.0 - 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 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
<pre>null<br>'test nav'</pre><pre>null<br>'test nav'</pre><pre>'test nav'</pre><pre>'test nav'</pre>
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/n4I8I on line 4
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/n4I8I on line 4
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/n4I8I on line 4
Process exited with code 255.
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