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run code in 500+ PHP versions simultaneously
<?php var_dump(json_decode("192.168.1.1")); //=>float(192.168) var_dump(json_last_error());//=>int(0)
Output for 5.3.0 - 5.3.29, 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 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
NULL int(4)
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/dkcl5 on line 3
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_decode() in /in/dkcl5 on line 2
Output for 4.3.0 - 4.3.1, 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: json_decode() in /in/dkcl5 on line 2
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.1.6
Fatal error: Call to undefined function json_decode() in /in/dkcl5 on line 2
Output for 5.2.0, 5.2.9 - 5.2.17
NULL Fatal error: Call to undefined function json_last_error() in /in/dkcl5 on line 3
Output for 5.2.1 - 5.2.8
string(11) "192.168.1.1" Fatal error: Call to undefined function json_last_error() in /in/dkcl5 on line 3

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