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run code in 300+ PHP versions simultaneously
<?php session_start(); $_SESSION["0"] = null;
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: PHP Request Shutdown: Skipping numeric key 0 in Unknown on line 0
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Warning: Unknown: Skipping numeric key 0 in Unknown on line 0
Output for 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 - 7.3.31, 7.4.0 - 7.4.33
Notice: Unknown: Skipping numeric key 0 in Unknown on line 0
Output for 7.3.32 - 7.3.33
Output for 5.2.10 - 5.2.17, 5.3.0 - 5.3.29
Notice: Unknown: The session bug compatibility code will not try to locate the global variable $0 due to its numeric nature in Unknown on line 0 Notice: Unknown: Skipping numeric key 0 in Unknown on line 0
Output for 5.2.3 - 5.2.9
Notice: Unknown: The session bug compatibility code will not try to locate the global variable $0 due to its numeric nature. in Unknown on line 0 Notice: Unknown: Skipping numeric key 0. in Unknown on line 0
Output for 5.2.1 - 5.2.2
Warning: session_start(): Cannot send session cookie - headers already sent in /in/T8Ov5 on line 2 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /in/T8Ov5:2) in /in/T8Ov5 on line 2 Notice: Unknown: The session bug compatibility code will not try to locate the global variable $0 due to its numeric nature. in Unknown on line 0 Notice: Unknown: Skipping numeric key 0. in Unknown on line 0
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0
Warning: session_start(): Cannot send session cookie - headers already sent in /in/T8Ov5 on line 2 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /in/T8Ov5:2) in /in/T8Ov5 on line 2 Notice: Unknown: The session bug compatibility code will not try to locate the global variable $0 due to its numeric nature. in Unknown on line 0
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Warning: session_start(): Cannot send session cookie - headers already sent in /in/T8Ov5 on line 2 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /in/T8Ov5:2) in /in/T8Ov5 on line 2 Notice: Unknown(): The session bug compatibility code will not try to locate the global variable $0 due to its numeric nature. in Unknown on line 0
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/T8Ov5 on line 2 Warning: session_start() [http://www.php.net/function.session-start]: Cannot send session cache limiter - headers already sent (output started at /in/T8Ov5:2) in /in/T8Ov5 on line 2 Notice: Unknown(): The session bug compatibility code will not try to locate the global variable $0 due to its numeric nature. in Unknown on line 0

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