3v4l.org

run code in 300+ PHP versions simultaneously
<?php function a() { b(array(1, 7, 4)); } function b($b) { c(); } function c() { debug_print_backtrace(); } a();
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
#0 /in/m2Oja(3): c() #1 /in/m2Oja(2): b(Array) #2 /in/m2Oja(5): a()
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.31, 7.1.0 - 7.1.23, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
#0 c() called at [/in/m2Oja:3] #1 b(Array ([0] => 1,[1] => 7,[2] => 4)) called at [/in/m2Oja:2] #2 a() called at [/in/m2Oja:5]
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: debug_print_backtrace() in /in/m2Oja on line 4
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: debug_print_backtrace() in /in/m2Oja on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: debug_print_backtrace() in /in/m2Oja on line 4

preferences:
264.13 ms | 401 KiB | 417 Q