3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(sqrt("-2")); var_dump(sqrt("string"));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
float(NAN) Fatal error: Uncaught TypeError: sqrt(): Argument #1 ($num) must be of type float, string given in /in/97ANK:5 Stack trace: #0 /in/97ANK(5): sqrt('string') #1 {main} thrown in /in/97ANK on line 5
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
float(NAN) Warning: sqrt() expects parameter 1 to be float, string given in /in/97ANK on line 5 NULL
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
float(NAN) Warning: sqrt() expects parameter 1 to be double, string given in /in/97ANK on line 5 NULL
Output for 4.3.4 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
float(NAN) float(0)
Output for 4.3.3

Process exited with code 137.
Output for 4.3.0 - 4.3.2
float(0.E+79) float(0)

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281.85 ms | 401 KiB | 459 Q