3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(unpack("V", "\xFF\xFF\xFF\xFF")); var_dump(unpack("N", "\xFF\xFF\xFF\xFF")); var_dump(unpack("l", pack("l", -1))); var_dump(unpack("V", pack("V", -1))); echo "_";
Output for 4.3.5 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0, 5.2.10 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 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, 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]=> int(4294967295) } array(1) { [1]=> int(4294967295) } array(1) { [1]=> int(-1) } array(1) { [1]=> int(4294967295) } _
Output for 5.2.1 - 5.2.9
array(1) { [1]=> int(-1) } array(1) { [1]=> int(-1) } array(1) { [1]=> int(-1) } array(1) { [1]=> int(-1) } _
Output for 4.3.0 - 4.3.4
array(1) { [""]=> int(4294967295) } array(1) { [""]=> int(4294967295) } array(1) { [""]=> int(-1) } array(1) { [""]=> int(4294967295) } _

preferences:
328.25 ms | 401 KiB | 460 Q