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Bugs & Features
<?php session_start(); class test { function test() { $bar = &$_SESSION['foo']; } } var_dump($_SESSION['foo']); $test=new test(); $foo = 1; session_write_close();
Output for 7.0.0 - 7.1.0
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; test has a deprecated constructor in /in/Z2ZE6 on line 5 Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /in/Z2ZE6:5) in /in/Z2ZE6 on line 3 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /in/Z2ZE6:5) in /in/Z2ZE6 on line 3 Notice: Undefined index: foo in /in/Z2ZE6 on line 13 NULL
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0
Notice: Undefined index: foo in /in/Z2ZE6 on line 13 NULL
Output for 5.3.0 - 5.3.29
Notice: Undefined index: foo in /in/Z2ZE6 on line 13 NULL Warning: session_write_close(): Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively in /in/Z2ZE6 on line 16
Output for 5.2.10 - 5.2.17
Notice: Undefined index: foo in /in/Z2ZE6 on line 13 NULL Warning: session_write_close(): Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively in /in/Z2ZE6 on line 16
Output for 5.2.3 - 5.2.9
Notice: Undefined index: foo in /in/Z2ZE6 on line 13 NULL Warning: session_write_close(): Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively. in /in/Z2ZE6 on line 16
Output for 4.3.2 - 5.2.2
Warning: session_start(): Cannot send session cookie - headers already sent in /in/Z2ZE6 on line 3 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /in/Z2ZE6:3) in /in/Z2ZE6 on line 3 Notice: Undefined index: foo in /in/Z2ZE6 on line 13 NULL Warning: session_write_close(): Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively. in /in/Z2ZE6 on line 16
Output for 4.3.0 - 4.3.1
Warning: session_start() [http://www.php.net/function.session-start]: Cannot send session cookie - headers already sent in /in/Z2ZE6 on line 3 Warning: session_start() [http://www.php.net/function.session-start]: Cannot send session cache limiter - headers already sent (output started at /in/Z2ZE6:3) in /in/Z2ZE6 on line 3 Notice: Undefined index: foo in /in/Z2ZE6 on line 13 NULL Warning: session_write_close() [http://www.php.net/function.session-write-close]: Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively. in /in/Z2ZE6 on line 16