Online PHP editor | output for Vr1k7

Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.6: Warning: password_hash(): Invalid bcrypt cost parameter specified: 3 in /in/Vr1k7 on line 2 NULL
Output for 5.2.3 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45: Fatal error: Call to undefined function password_hash() in /in/Vr1k7 on line 2
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.2: Fatal error: Call to undefined function password_hash() in /in/Vr1k7 on line 2 
Process exited with code 255.
Output for 4.4.5 - 4.4.9: Fatal error: Call to undefined function: password_hash() in /in/Vr1k7 on line 2 
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4: Fatal error: Call to undefined function: password_hash() in /in/Vr1k7 on line 2 
Process exited with code 255.
Output for 4.3.0 - 4.3.1: Fatal error: Call to undefined function: password_hash() in /in/Vr1k7 on line 2