3v4l.org

run code in 300+ PHP versions simultaneously
<?php $num = "\x17"; $bigEndian = unpack("v", num); echo $bigEndian

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
5.4.280.0270.06019.04
5.4.270.0330.06319.06
5.4.260.0270.06019.08
5.4.250.0200.04719.21
5.4.240.0200.07719.16
5.4.230.0270.05718.92
5.4.220.0270.07018.78
5.4.210.0230.07018.92
5.4.200.0270.07319.09
5.4.190.0370.06018.87
5.4.180.0200.05018.91
5.4.170.0230.08018.88
5.4.160.0230.06019.09
5.4.150.0200.05718.86
5.4.140.0200.05716.29
5.4.130.0200.07016.29
5.4.120.0270.06016.43
5.4.110.0230.06316.32
5.4.100.0270.06316.19
5.4.90.0230.06716.30
5.4.80.0270.05316.39
5.4.70.0170.07716.40
5.4.60.0270.07016.32
5.4.50.0330.06316.20
5.4.40.0230.07016.28
5.4.30.0200.08016.36
5.4.20.0230.07316.17
5.4.10.0270.05316.16
5.4.00.0170.07315.73
5.3.280.0230.06714.75
5.3.270.0170.08014.75
5.3.260.0200.05014.75
5.3.250.0270.06314.75
5.3.240.0400.05714.75
5.3.230.0300.06314.75
5.3.220.0300.07014.75
5.3.210.0270.06014.75
5.3.200.0300.05314.75
5.3.190.0230.06714.75
5.3.180.0230.05314.75
5.3.170.0270.06314.75
5.3.160.0200.07014.75
5.3.150.0270.07014.75
5.3.140.0300.05714.75
5.3.130.0230.08014.75
5.3.120.0200.05314.75
5.3.110.0270.06314.75
5.3.100.0270.07014.75
5.3.90.0370.05714.75
5.3.80.0230.07014.75
5.3.70.0230.06014.75
5.3.60.0200.06314.75
5.3.50.0270.06714.75
5.3.40.0330.06014.75
5.3.30.0270.05314.75
5.3.20.0270.07014.75
5.3.10.0200.06714.75
5.3.00.0130.07314.75
5.2.170.0230.05714.75
5.2.160.0330.04014.75
5.2.150.0230.05714.75
5.2.140.0170.05014.75
5.2.130.0200.05714.75
5.2.120.0230.05014.75
5.2.110.0130.03014.75
5.2.100.0200.05714.75
5.2.90.0230.05014.75
5.2.80.0130.05314.75
5.2.70.0270.05314.75
5.2.60.0170.06014.75
5.2.50.0200.05714.75
5.2.40.0170.05314.75
5.2.30.0230.03714.75
5.2.20.0200.05014.75
5.2.10.0170.05314.75
5.2.00.0170.04314.75
5.1.60.0130.03314.75
5.1.50.0270.04014.75
5.1.40.0170.05014.75
5.1.30.0170.04314.75
5.1.20.0130.04714.75
5.1.10.0200.02314.75
5.1.00.0200.05014.75
5.0.50.0100.03014.75
5.0.40.0100.03314.75
5.0.30.0130.05714.75
5.0.20.0170.03314.75
5.0.10.0070.02714.75
5.0.00.0070.05014.75
4.4.90.0070.03714.75
4.4.80.0100.03014.75
4.4.70.0070.03014.75
4.4.60.0100.03014.75
4.4.50.0070.03314.75
4.4.40.0070.04014.75
4.4.30.0070.01714.75
4.4.20.0100.02014.75
4.4.10.0030.03014.75
4.4.00.0070.02714.75
4.3.110.0130.02714.75
4.3.100.0100.02014.75
4.3.90.0130.02014.75
4.3.80.0070.04014.75
4.3.70.0130.02714.75
4.3.60.0030.03014.75
4.3.50.0130.02714.75
4.3.40.0070.04014.75
4.3.30.0030.03714.75
4.3.20.0030.03014.75
4.3.10.0030.03014.75
4.3.00.0030.03314.75

preferences:
142.46 ms | 1394 KiB | 7 Q