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<?php session_start(); var_dump($_SESSION);
Output for 5.2.3 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(0) { }
Output for 4.4.3 - 5.2.2
<br /> <b>Warning</b>: session_start() [<a href='function.session-start'>function.session-start</a>]: Cannot send session cookie - headers already sent in <b>/in/R36K8</b> on line <b>2</b><br /> <br /> <b>Warning</b>: session_start() [<a href='function.session-start'>function.session-start</a>]: Cannot send session cache limiter - headers already sent (output started at /in/R36K8:2) in <b>/in/R36K8</b> on line <b>2</b><br /> array(0) { }
Output for 4.3.2 - 4.4.2
<br /> <b>Warning</b>: session_start(): Cannot send session cookie - headers already sent in <b>/in/R36K8</b> on line <b>2</b><br /> <br /> <b>Warning</b>: session_start(): Cannot send session cache limiter - headers already sent (output started at /in/R36K8:2) in <b>/in/R36K8</b> on line <b>2</b><br /> array(0) { }
Output for 4.3.0 - 4.3.1
<br /> <b>Warning</b>: session_start() [<a href='http://www.php.net/function.session-start'>function.session-start</a>]: Cannot send session cookie - headers already sent in <b>/in/R36K8</b> on line <b>2</b><br /> <br /> <b>Warning</b>: session_start() [<a href='http://www.php.net/function.session-start'>function.session-start</a>]: Cannot send session cache limiter - headers already sent (output started at /in/R36K8:2) in <b>/in/R36K8</b> on line <b>2</b><br /> array(0) { }