3v4l.org

run code in 300+ PHP versions simultaneously
<?php array A = [1, 2, 3], B; B = A; var_dump(B); A = 1; var_dump(B);

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)
5.4.340.0070.03312.01
5.4.320.0050.03712.50
5.4.310.0090.03512.50
5.4.300.0060.03512.50
5.4.290.0070.03612.50
5.4.280.0030.03812.39
5.4.270.0050.03612.39
5.4.260.0050.03812.39
5.4.250.0070.04012.39
5.4.240.0070.03512.39
5.4.230.0050.03912.38
5.4.220.0080.03412.38
5.4.210.0060.03512.38
5.4.200.0060.03612.38
5.4.190.0040.03712.38
5.4.180.0040.03612.38
5.4.170.0070.04412.38
5.4.160.0060.05212.38
5.4.150.0040.03812.38
5.4.140.0070.03612.07
5.4.130.0080.03512.05
5.4.120.0050.03512.02
5.4.110.0060.03512.01
5.4.100.0080.03212.01
5.4.90.0050.04312.01
5.4.80.0070.03512.01
5.4.70.0060.03612.01
5.4.60.0050.03612.00
5.4.50.0070.03412.01
5.4.40.0040.03611.99
5.4.30.0060.03912.00
5.4.20.0050.03411.99
5.4.10.0060.04311.99
5.4.00.0100.04911.49
5.3.290.0040.04212.80
5.3.280.0070.04112.71
5.3.270.0050.04712.73
5.3.260.0050.04212.72
5.3.250.0080.04012.72
5.3.240.0070.04512.71
5.3.230.0060.04012.71
5.3.220.0040.04012.68
5.3.210.0090.04512.68
5.3.200.0060.03612.68
5.3.190.0030.04012.68
5.3.180.0080.03512.68
5.3.170.0090.03312.67
5.3.160.0070.03712.67
5.3.150.0060.03812.68
5.3.140.0060.04712.66
5.3.130.0100.04212.66
5.3.120.0050.05612.65
5.3.110.0040.04612.66
5.3.100.0070.04512.12
5.3.90.0060.04412.08
5.3.80.0050.04812.07
5.3.70.0060.04312.08
5.3.60.0070.03912.06
5.3.50.0060.03412.00
5.3.40.0030.04312.00
5.3.30.0050.03511.95
5.3.20.0070.04311.73
5.3.10.0070.03411.70
5.3.00.0020.04011.68
5.2.170.0040.0319.18
5.2.160.0070.0319.18
5.2.150.0040.0319.18
5.2.140.0050.0439.18
5.2.130.0060.0399.14
5.2.120.0030.0489.14
5.2.110.0090.0339.14
5.2.100.0040.0399.14
5.2.90.0060.0289.14
5.2.80.0030.0329.14
5.2.70.0080.0289.14
5.2.60.0070.0289.09
5.2.50.0030.0329.06
5.2.40.0050.0289.04
5.2.30.0050.0369.02
5.2.20.0040.0389.00
5.2.10.0090.0238.93
5.2.00.0070.0278.79
5.1.60.0030.0248.07
5.1.50.0050.0258.06
5.1.40.0030.0288.05
5.1.30.0030.0288.39
5.1.20.0040.0318.41
5.1.10.0040.0338.14
5.1.00.0050.0258.14
5.0.50.0050.0356.62
5.0.40.0020.0206.48
5.0.30.0040.0316.29
5.0.20.0040.0186.26
5.0.10.0020.0216.24
5.0.00.0010.0336.23
4.4.90.0030.0164.78
4.4.80.0050.0194.76
4.4.70.0020.0164.75
4.4.60.0030.0144.75
4.4.50.0050.0184.77
4.4.40.0020.0254.71
4.4.30.0030.0164.76
4.4.20.0010.0164.84
4.4.10.0040.0144.85
4.4.00.0050.0224.76
4.3.110.0010.0174.67
4.3.100.0030.0144.66
4.3.90.0020.0154.64
4.3.80.0010.0254.59
4.3.70.0020.0154.63
4.3.60.0020.0144.63
4.3.50.0020.0154.63
4.3.40.0030.0234.54
4.3.30.0030.0153.29
4.3.20.0020.0153.27
4.3.10.0040.0253.21
4.3.00.0100.0278.68

preferences:
142.98 ms | 1394 KiB | 7 Q