Online PHP editor | output for I2lF4

Output for 4.3.5 - 4.3.9, 4.3.11, 4.4.0 - 4.4.1, 4.4.3 - 4.4.9, 5.0.0 - 5.0.2, 5.0.5, 5.1.0 - 5.1.1, 5.1.3 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: array(1) { [1]=> string(2) "ff" }
Output for 4.4.2, 5.1.2: array(1) { [1]=> string(3) "ff0" }
Output for 5.0.3 - 5.0.4: Warning: unpack() [<a href='function.unpack'>function.unpack</a>]: Type H: outside of string in /in/I2lF4 on line 2 array(1) { [1]=> string(2) "ff" }
Output for 4.3.10: Warning: unpack(): Type H: outside of string in /in/I2lF4 on line 2 array(1) { [1]=> string(2) "ff" }
Output for 4.3.0 - 4.3.4: array(1) { [""]=> string(2) "ff" }