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run code in 300+ PHP versions simultaneously
<?php error_reporting(-1); ini_set('display_errors', 1); var_dump(1 instanceof foo);
Output for 7.3.16 - 7.3.33, 7.4.3 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
bool(false)
Output for 5.2.1 - 5.2.17, 5.3.0 - 5.3.28, 5.4.0 - 5.4.27, 7.2.29 - 7.2.33
Fatal error: instanceof expects an object instance, constant given in /in/ujtqU on line 6
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0
Fatal error: Invalid opcode 138/1/1. in /in/ujtqU on line 6
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Class 'foo' not found in /in/ujtqU on line 6
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/ujtqU on line 6
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_STRING in /in/ujtqU on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/ujtqU on line 6
Process exited with code 255.

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