3v4l.org

run code in 300+ PHP versions simultaneously
<?php x = 0; $a = array(&$x); $b = $a; $x = 2; unset($x); $b[1]++; $b[0]++; echo $a[0], ' ', $b[0];

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)
5.4.320.0090.04012.50
5.4.310.0040.03912.50
5.4.300.0060.03612.50
5.4.290.0060.03812.50
5.4.280.0100.03212.39
5.4.270.0090.03712.39
5.4.260.0140.03912.39
5.4.250.0020.04112.39
5.4.240.0080.03412.39
5.4.230.0050.04812.38
5.4.220.0040.04512.38
5.4.210.0090.03312.38
5.4.200.0050.03912.38
5.4.190.0030.03912.38
5.4.180.0090.03912.38
5.4.170.0060.03612.38
5.4.160.0040.03712.38
5.4.150.0070.03412.38
5.4.140.0060.03712.07
5.4.130.0080.03612.05
5.4.120.0070.03412.01
5.4.110.0080.03412.01
5.4.100.0060.03912.01
5.4.90.0070.03812.01
5.4.80.0040.03912.01
5.4.70.0060.03612.01
5.4.60.0070.03812.01
5.4.50.0060.04612.01
5.4.40.0040.03811.99
5.4.30.0070.03312.00
5.4.20.0050.05811.99
5.4.10.0090.03111.99
5.4.00.0060.03611.48
5.3.290.0060.03912.80
5.3.280.0100.04012.71
5.3.270.0050.03912.72
5.3.260.0070.05512.72
5.3.250.0050.03812.72
5.3.240.0060.03812.72
5.3.230.0070.03612.71
5.3.220.0060.04212.68
5.3.210.0030.04112.68
5.3.200.0050.03612.68
5.3.190.0040.03912.68
5.3.180.0060.03612.67
5.3.170.0080.03312.67
5.3.160.0050.03712.67
5.3.150.0070.05312.68
5.3.140.0090.03912.66
5.3.130.0070.03712.66
5.3.120.0080.03712.66
5.3.110.0080.03712.66
5.3.100.0050.03712.12
5.3.90.0040.03712.09
5.3.80.0080.04012.07
5.3.70.0070.03512.07
5.3.60.0090.03312.06
5.3.50.0080.03312.00
5.3.40.0010.04112.00
5.3.30.0070.04011.95
5.3.20.0110.04411.73
5.3.10.0040.04111.70
5.3.00.0030.04011.68
5.2.170.0060.0299.18
5.2.160.0030.0309.18
5.2.150.0050.0299.18
5.2.140.0050.0299.18
5.2.130.0040.0299.14
5.2.120.0070.0259.14
5.2.110.0010.0339.14
5.2.100.0020.0309.14
5.2.90.0030.0309.14
5.2.80.0060.0299.14
5.2.70.0030.0319.14
5.2.60.0070.0279.09
5.2.50.0070.0279.06
5.2.40.0060.0289.03
5.2.30.0030.0319.01
5.2.20.0040.0299.01
5.2.10.0060.0268.92
5.2.00.0070.0268.78
5.1.60.0040.0258.07
5.1.50.0060.0238.07
5.1.40.0030.0258.05
5.1.30.0030.0268.40
5.1.20.0040.0258.42
5.1.10.0050.0258.14
5.1.00.0060.0238.14
5.0.50.0020.0216.63
5.0.40.0060.0166.48
5.0.30.0040.0306.29
5.0.20.0050.0186.27
5.0.10.0050.0186.24
5.0.00.0020.0326.23
4.4.90.0010.0164.78
4.4.80.0030.0144.75
4.4.70.0040.0154.75
4.4.60.0030.0204.75
4.4.50.0030.0154.77
4.4.40.0030.0254.71
4.4.30.0030.0154.76
4.4.20.0030.0164.84
4.4.10.0030.0144.85
4.4.00.0060.0354.76
4.3.110.0020.0164.67
4.3.100.0040.0134.66
4.3.90.0010.0164.63
4.3.80.0050.0214.58
4.3.70.0030.0224.63
4.3.60.0010.0204.63
4.3.50.0020.0164.63
4.3.40.0020.0334.54
4.3.30.0020.0173.28
4.3.20.0050.0183.26
4.3.10.0030.0163.21
4.3.00.0030.0207.14

preferences:
143.58 ms | 1394 KiB | 7 Q