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<?php session_start(); $_SESSION['test'] = 1; session_write_close(); echo "text"; flush(); $x = session_start(); var_dump($x);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
text Warning: session_start(): Session cannot be started after headers have already been sent in /in/A06Gr on line 13 bool(false)
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
text Warning: session_start(): Cannot start session when headers already sent in /in/A06Gr on line 13 bool(false)
Output for 7.1.0 - 7.1.33
text Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /in/A06Gr:10) in /in/A06Gr on line 13 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /in/A06Gr:10) in /in/A06Gr on line 13 bool(false)
Output for 5.2.3 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30, 7.0.0 - 7.0.27
text Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /in/A06Gr:10) in /in/A06Gr on line 13 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /in/A06Gr:10) in /in/A06Gr on line 13 bool(true)
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.2
Warning: session_start(): Cannot send session cookie - headers already sent in /in/A06Gr on line 3 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /in/A06Gr:3) in /in/A06Gr on line 3 text Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /in/A06Gr:3) in /in/A06Gr on line 13 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /in/A06Gr:3) in /in/A06Gr on line 13 bool(true)
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/A06Gr 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/A06Gr:3) in /in/A06Gr on line 3 text Warning: session_start() [http://www.php.net/function.session-start]: Cannot send session cookie - headers already sent by (output started at /in/A06Gr:3) in /in/A06Gr on line 13 Warning: session_start() [http://www.php.net/function.session-start]: Cannot send session cache limiter - headers already sent (output started at /in/A06Gr:3) in /in/A06Gr on line 13 bool(true)

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