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]; // 2 3

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)
8.3.60.0040.01118.68
8.3.50.0130.00822.06
8.3.40.0120.00318.80
8.3.30.0070.00719.09
8.3.20.0070.00020.04
8.3.10.0060.00323.68
8.3.00.0030.00719.26
8.2.180.0120.00416.50
8.2.170.0090.00922.96
8.2.160.0070.00720.35
8.2.150.0090.00024.18
8.2.140.0040.00424.66
8.2.130.0000.00726.16
8.2.120.0000.00722.14
8.2.110.0090.00022.23
8.2.100.0060.00617.75
8.2.90.0000.00819.30
8.2.80.0080.00017.97
8.2.70.0000.01017.63
8.2.60.0080.00017.93
8.2.50.0110.00018.07
8.2.40.0040.00420.01
8.2.30.0040.00418.12
8.2.20.0000.00817.90
8.2.10.0000.00718.09
8.2.00.0070.00017.67
8.1.280.0070.01025.92
8.1.270.0000.00823.91
8.1.260.0090.00026.35
8.1.250.0070.00028.09
8.1.240.0040.00423.92
8.1.230.0080.00419.26
8.1.220.0080.00017.74
8.1.210.0040.00418.77
8.1.200.0040.00417.35
8.1.190.0080.00017.35
8.1.180.0060.00318.10
8.1.170.0000.00818.54
8.1.160.0040.00421.99
8.1.150.0000.00818.76
8.1.140.0040.00417.45
8.1.130.0000.00717.75
8.1.120.0040.00317.52
8.1.110.0030.00517.33
8.1.100.0030.00517.39
8.1.90.0040.00417.50
8.1.80.0000.00717.34
8.1.70.0030.00317.33
8.1.60.0030.00617.50
8.1.50.0030.00517.50
8.1.40.0040.00417.49
8.1.30.0030.00517.62
8.1.20.0030.00517.60
8.1.10.0000.00717.44
8.1.00.0000.00817.53
8.0.300.0040.00418.77
8.0.290.0080.00016.75
8.0.280.0030.00318.42
8.0.270.0070.00017.31
8.0.260.0000.00617.24
8.0.250.0030.00317.02
8.0.240.0040.00417.02
8.0.230.0030.00617.00
8.0.220.0000.00716.86
8.0.210.0040.00416.93
8.0.200.0070.00016.91
8.0.190.0000.00916.98
8.0.180.0040.00417.00
8.0.170.0000.00817.02
8.0.160.0030.00316.93
8.0.150.0040.00416.99
8.0.140.0070.00016.83
8.0.130.0030.00313.41
8.0.120.0000.00816.95
8.0.110.0000.00716.94
8.0.100.0000.00816.91
8.0.90.0000.00817.00
8.0.80.0060.00916.97
8.0.70.0050.00216.93
8.0.60.0040.00416.83
8.0.50.0040.00416.92
8.0.30.0110.00817.28
8.0.20.0130.00717.40
8.0.10.0030.00516.95
8.0.00.0070.01016.88
7.4.330.0060.00015.05
7.4.320.0030.00316.64
7.4.300.0000.00616.42
7.4.290.0040.00416.61
7.4.280.0050.00316.50
7.4.270.0000.00616.59
7.4.260.0030.00716.57
7.4.250.0040.00416.48
7.4.240.0050.00216.53
7.4.230.0040.00416.54
7.4.220.0110.00616.46
7.4.210.0030.01016.56
7.4.200.0000.00716.44
7.4.160.0130.00316.70
7.4.150.0140.00317.40
7.4.140.0050.01417.86
7.4.130.0100.00716.59
7.4.120.0110.00616.70
7.4.110.0060.01216.57
7.4.100.0000.01716.37
7.4.90.0070.01016.38
7.4.80.0100.00719.39
7.4.70.0120.00416.60
7.4.60.0160.00616.45
7.4.50.0050.00016.37
7.4.40.0100.00616.49
7.4.30.0160.00016.75
7.4.00.0090.00915.01
7.3.330.0000.00513.27
7.3.320.0060.00013.24
7.3.310.0070.00016.55
7.3.300.0000.00716.30
7.3.290.0050.01016.42
7.3.280.0060.01216.40
7.3.270.0140.00417.40
7.3.260.0120.01216.59
7.3.250.0070.01316.49
7.3.240.0110.01116.43
7.3.230.0060.01016.48
7.3.210.0160.00416.43
7.3.200.0100.00919.39
7.3.190.0100.01316.54
7.3.180.0100.00716.39
7.3.170.0130.00316.44
7.3.160.0140.00716.52
7.3.120.0070.01014.87
7.3.110.0100.00714.72
7.3.100.0000.01615.09
7.3.90.0040.00815.04
7.3.80.0000.01415.01
7.3.70.0070.00715.04
7.3.60.0070.00414.91
7.3.50.0100.00614.85
7.3.40.0040.00814.73
7.3.30.0040.00714.69
7.3.20.0060.00916.75
7.3.10.0040.00716.88
7.3.00.0060.00616.90
7.2.330.0140.00316.58
7.2.320.0060.01216.57
7.2.310.0060.01016.66
7.2.300.0080.00816.70
7.2.290.0090.01116.55
7.2.250.0060.01315.20
7.2.240.0060.01015.21
7.2.230.0030.01314.92
7.2.220.0040.01114.79
7.2.210.0040.01114.81
7.2.200.0070.00715.15
7.2.190.0060.01015.02
7.2.180.0030.01014.75
7.2.170.0000.01514.94
7.2.60.0060.00916.90
7.2.00.0000.01219.48
7.1.330.0000.01415.96
7.1.320.0070.00415.77
7.1.310.0000.01315.96
7.1.300.0050.00315.90
7.1.290.0000.01315.94
7.1.280.0080.00415.88
7.1.270.0030.01015.82
7.1.260.0030.01016.03
7.1.200.0030.00915.59
7.1.100.0140.01116.06
7.1.70.0040.00417.25
7.1.60.0100.01019.32
7.1.50.0040.01816.61
7.1.00.0070.06722.54
7.0.200.0000.00916.80
7.0.140.0000.07322.07
7.0.60.0030.09020.02
7.0.50.0030.04317.90
7.0.40.0130.05720.32
7.0.30.0300.04020.31
7.0.20.0270.04020.09
7.0.10.0170.08020.02
7.0.00.0070.07720.09
5.6.280.0030.07320.99
5.6.210.0070.08320.62
5.6.200.0100.07718.09
5.6.190.0030.04320.27
5.6.180.0370.04020.38
5.6.170.0170.05320.34
5.6.160.0100.08020.41
5.6.150.0070.03718.11
5.6.140.0130.07318.15
5.6.130.0100.08018.21
5.6.120.0130.03020.95
5.6.110.0070.08721.11
5.6.100.0070.07320.98
5.6.90.0100.07020.94
5.6.80.0100.07020.38
5.5.350.0170.07020.46
5.5.340.0070.06318.02
5.5.330.0000.04320.47
5.5.320.0370.08020.31
5.5.310.0270.06020.27
5.5.300.0070.07017.91
5.5.290.0100.07017.96
5.5.280.0100.05720.84
5.5.270.0170.03720.74
5.5.260.0030.08020.67
5.5.250.0070.04020.55
5.5.240.0230.03720.27
5.4.450.0370.05019.58
5.4.440.0670.06019.60
5.4.430.0530.05019.63
5.4.420.0730.00019.43
5.4.410.0630.00019.41
5.4.400.0630.00019.03
5.4.390.0630.00019.13
5.4.380.0630.00019.26
5.4.370.0670.00019.05
5.4.360.0630.00019.14
5.4.350.0670.00019.09
5.4.340.0060.03811.96
5.4.320.0050.03712.45
5.4.310.0070.04012.45
5.4.300.0060.03712.45
5.4.290.0050.03712.45
5.4.280.0090.03612.35
5.4.270.0110.03412.35
5.4.260.0070.03512.34
5.4.250.0050.03712.35
5.4.240.0050.03612.34
5.4.230.0080.03512.34
5.4.220.0070.03512.34
5.4.210.0050.03612.34
5.4.200.0040.03912.34
5.4.190.0090.03212.33
5.4.180.0050.03712.34
5.4.170.0070.03712.34
5.4.160.0030.03812.34
5.4.150.0030.03812.34
5.4.140.0040.03912.02
5.4.130.0070.03412.01
5.4.120.0080.03311.96
5.4.110.0060.03411.96
5.4.100.0040.03611.96
5.4.90.0070.03511.96
5.4.80.0060.03511.96
5.4.70.0060.03411.96
5.4.60.0060.04511.96
5.4.50.0050.03611.96
5.4.40.0030.03711.95
5.4.30.0030.03911.95
5.4.20.0040.03711.95
5.4.10.0070.03211.95
5.4.00.0090.03711.44
5.3.290.0060.03912.80
5.3.280.0070.03812.71
5.3.270.0030.04112.72
5.3.260.0040.04112.72
5.3.250.0080.03412.72
5.3.240.0050.04012.72
5.3.230.0090.04412.70
5.3.220.0060.03712.68
5.3.210.0060.03912.68
5.3.200.0090.03312.68
5.3.190.0090.04112.68
5.3.180.0040.03812.68
5.3.170.0080.03512.67
5.3.160.0060.03912.68
5.3.150.0050.03912.68
5.3.140.0090.03412.66
5.3.130.0050.03912.66
5.3.120.0050.04012.66
5.3.110.0060.04212.66
5.3.100.0080.03812.12
5.3.90.0090.03512.08
5.3.80.0080.03812.07
5.3.70.0100.03312.08
5.3.60.0040.04612.06
5.3.50.0050.04212.00
5.3.40.0070.03412.00
5.3.30.0030.03711.94
5.3.20.0070.03311.72
5.3.10.0070.03311.69
5.3.00.0080.04511.68
5.2.170.0040.0389.18
5.2.160.0040.0309.18
5.2.150.0040.0399.18
5.2.140.0070.0299.17
5.2.130.0070.0339.13
5.2.120.0030.0309.13
5.2.110.0030.0319.14
5.2.100.0040.0429.14
5.2.90.0020.0339.14
5.2.80.0050.0299.13
5.2.70.0030.0319.13
5.2.60.0050.0299.09
5.2.50.0070.0279.05
5.2.40.0060.0309.03
5.2.30.0060.0309.01
5.2.20.0060.0279.00
5.2.10.0030.0308.93
5.2.00.0020.0338.79
5.1.60.0020.0268.08
5.1.50.0040.0298.07
5.1.40.0050.0268.06
5.1.30.0040.0258.41
5.1.20.0060.0248.43
5.1.10.0040.0268.15
5.1.00.0010.0318.14
5.0.50.0050.0206.63
5.0.40.0030.0196.49
5.0.30.0020.0356.30
5.0.20.0030.0196.27
5.0.10.0020.0236.25
5.0.00.0040.0326.24
4.4.90.0030.0184.78
4.4.80.0030.0174.75
4.4.70.0040.0144.76
4.4.60.0020.0164.76
4.4.50.0050.0134.77
4.4.40.0030.0264.71
4.4.30.0040.0174.76
4.4.20.0040.0154.85
4.4.10.0020.0174.85
4.4.00.0020.0264.76
4.3.110.0040.0174.67
4.3.100.0080.0194.66
4.3.90.0020.0154.63
4.3.80.0030.0264.58
4.3.70.0050.0124.63
4.3.60.0030.0154.63
4.3.50.0040.0144.63
4.3.40.0050.0224.54
4.3.30.0020.0163.29
4.3.20.0000.0193.27
4.3.10.0020.0153.23
4.3.00.0170.0237.18

preferences:
40.12 ms | 401 KiB | 5 Q