3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(serialize(array("aa"=>"bb", "bb"=>"cc"));

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)
5.4.340.0070.06512.01
5.4.320.0060.05312.49
5.4.310.0130.04812.49
5.4.300.0100.04912.50
5.4.290.0120.05012.49
5.4.280.0080.05012.39
5.4.270.0130.04812.39
5.4.260.0150.04312.39
5.4.250.0090.05312.39
5.4.240.0050.05312.39
5.4.230.0070.04812.38
5.4.220.0140.05812.38
5.4.210.0110.12312.38
5.4.200.0120.05312.38
5.4.190.0170.09612.38
5.4.180.0170.07812.38
5.4.170.0090.05612.38
5.4.160.0110.04012.38
5.4.150.0090.04212.38
5.4.140.0030.05512.07
5.4.130.0070.03812.05
5.4.120.0070.04512.01
5.4.110.0080.04712.01
5.4.100.0060.03712.01
5.4.90.0050.04412.01
5.4.80.0090.04812.02
5.4.70.0100.05712.01
5.4.60.0070.04812.01
5.4.50.0090.04212.01
5.4.40.0050.04911.99
5.4.30.0050.04711.99
5.4.20.0070.04211.98
5.4.10.0100.05511.99
5.4.00.0110.07311.48
5.3.290.0140.04612.80
5.3.280.0080.04912.71
5.3.270.0050.04112.73
5.3.260.0060.04012.71
5.3.250.0050.03812.72
5.3.240.0040.03912.72
5.3.230.0050.03912.71
5.3.220.0090.03812.68
5.3.210.0090.04812.68
5.3.200.0100.04112.68
5.3.190.0100.03612.68
5.3.180.0080.04112.68
5.3.170.0090.03712.67
5.3.160.0020.04112.67
5.3.150.0100.03612.67
5.3.140.0070.03512.66
5.3.130.0050.04012.66
5.3.120.0050.03812.66
5.3.110.0030.04012.66
5.3.100.0040.03712.12
5.3.90.0060.03612.08
5.3.80.0060.03912.08
5.3.70.0070.03712.07
5.3.60.0060.03612.06
5.3.50.0070.04612.00
5.3.40.0080.03312.00
5.3.30.0070.03311.95
5.3.20.0070.03311.73
5.3.10.0040.03611.70
5.3.00.0060.03611.68
5.2.170.0070.0289.18
5.2.160.0010.0329.19
5.2.150.0040.0319.18
5.2.140.0030.0349.18
5.2.130.0050.0299.14
5.2.120.0040.0299.14
5.2.110.0040.0299.15
5.2.100.0040.0289.14
5.2.90.0040.0309.14
5.2.80.0030.0309.14
5.2.70.0040.0319.14
5.2.60.0010.0339.09
5.2.50.0030.0309.06
5.2.40.0020.0309.04
5.2.30.0040.0309.02
5.2.20.0070.0259.00
5.2.10.0040.0308.93
5.2.00.0070.0278.79
5.1.60.0050.0238.06
5.1.50.0020.0268.06
5.1.40.0040.0258.04
5.1.30.0080.0228.40
5.1.20.0040.0268.42
5.1.10.0020.0288.14
5.1.00.0020.0278.14
5.0.50.0020.0236.62
5.0.40.0020.0226.48
5.0.30.0030.0326.29
5.0.20.0050.0216.27
5.0.10.0070.0176.24
5.0.00.0040.0306.23
4.4.90.0030.0174.78
4.4.80.0030.0164.75
4.4.70.0030.0214.76
4.4.60.0040.0204.75
4.4.50.0040.0164.77
4.4.40.0010.0274.71
4.4.30.0010.0164.76
4.4.20.0040.0144.84
4.4.10.0030.0154.84
4.4.00.0020.0264.76
4.3.110.0020.0174.67
4.3.100.0030.0144.66
4.3.90.0030.0164.63
4.3.80.0020.0264.58
4.3.70.0040.0144.63
4.3.60.0010.0164.63
4.3.50.0020.0174.63
4.3.40.0040.0224.54
4.3.30.0020.0153.28
4.3.20.0010.0173.26
4.3.10.0020.0153.21
4.3.00.0030.0206.96

preferences:
142.93 ms | 1394 KiB | 7 Q