3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 1; $b = [&$a]; $c = $b; $b[0] = 2; echo "$b[0] $c[0]"; // 2 2

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)
8.3.60.0110.00418.29
8.3.50.0070.01418.32
8.3.40.0130.00318.89
8.3.30.0150.00018.71
8.3.20.0000.00724.18
8.3.10.0050.00324.66
8.3.00.0040.00426.16
8.2.180.0100.00725.92
8.2.170.0070.00718.91
8.2.160.0130.00022.96
8.2.150.0040.00425.66
8.2.140.0000.00724.66
8.2.130.0050.00326.16
8.2.120.0000.00819.77
8.2.110.0090.00020.38
8.2.100.0110.00317.72
8.2.90.0040.00417.88
8.2.80.0040.00418.92
8.2.70.0090.00018.04
8.2.60.0000.00918.22
8.2.50.0030.00518.10
8.2.40.0040.00421.20
8.2.30.0080.00019.41
8.2.20.0000.00818.25
8.2.10.0040.00419.18
8.2.00.0000.00719.34
8.1.280.0110.00625.92
8.1.270.0080.00024.66
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0030.00623.86
8.1.230.0040.00823.86
8.1.220.0030.00517.79
8.1.210.0040.00418.77
8.1.200.0070.00417.48
8.1.190.0030.00517.35
8.1.180.0040.00418.10
8.1.170.0000.00818.65
8.1.160.0040.00418.83
8.1.150.0000.00818.79
8.1.140.0030.00518.92
8.1.130.0030.00317.35
8.1.120.0000.00717.52
8.1.110.0000.00817.46
8.1.100.0030.00317.33
8.1.90.0000.00717.47
8.1.80.0040.00417.46
8.1.70.0030.00317.43
8.1.60.0050.00317.45
8.1.50.0000.00817.42
8.1.40.0040.00417.55
8.1.30.0040.00417.56
8.1.20.0050.00217.67
8.1.10.0070.00017.57
8.1.00.0040.00417.36
8.0.300.0070.00018.77
8.0.290.0040.00416.75
8.0.280.0030.00318.34
8.0.270.0050.00316.66
8.0.260.0030.00616.81
8.0.250.0030.00316.96
8.0.240.0000.00816.92
8.0.230.0000.00716.89
8.0.220.0000.00716.75
8.0.210.0030.00516.77
8.0.200.0030.00316.86
8.0.190.0000.00716.88
8.0.180.0040.00416.87
8.0.170.0060.00316.79
8.0.160.0000.00816.76
8.0.150.0030.00616.84
8.0.140.0050.00516.73
8.0.130.0030.00313.28
8.0.120.0040.00416.71
8.0.110.0040.00416.87
8.0.100.0040.00416.83
8.0.90.0030.00316.74
8.0.80.0090.00616.85
8.0.70.0040.01116.86
8.0.60.0040.01116.80
8.0.50.0030.01716.73
8.0.30.0130.00716.81
8.0.20.0060.01516.94
8.0.10.0110.00716.98
8.0.00.0140.00716.96
7.4.330.0030.00315.55
7.4.320.0000.00716.51
7.4.300.0000.00616.63
7.4.290.0080.00016.45
7.4.280.0030.00416.58
7.4.270.0070.00016.57
7.4.260.0000.00513.23
7.4.250.0030.00316.38
7.4.240.0050.00216.57
7.4.230.0040.00416.29
7.4.220.0000.00716.34
7.4.210.0030.01616.64
7.4.200.0140.00416.51
7.4.190.0000.01616.53
7.4.180.0100.00916.59
7.4.160.0040.00916.48
7.4.150.0030.01016.55
7.4.140.0090.00416.59
7.4.130.0070.00716.41
7.4.120.0140.00416.51
7.4.110.0070.00716.54
7.4.100.0040.01116.60
7.4.90.0060.00916.49
7.4.80.0100.00616.53
7.4.70.0110.01116.40
7.4.60.0090.00616.32
7.4.50.0090.01216.34
7.4.40.0100.01016.36
7.4.30.0100.01016.46
7.4.20.0030.01016.48
7.4.10.0040.01016.45
7.4.00.0080.00516.57
7.3.330.0070.00016.41
7.3.320.0050.00013.04
7.3.310.0040.00416.30
7.3.300.0030.00316.30
7.3.290.0070.00716.38
7.3.280.0100.00316.31
7.3.270.0000.01316.38
7.3.260.0090.00616.37
7.3.250.0030.01016.24
7.3.240.0130.00016.27
7.3.230.0070.00716.29
7.3.220.0000.01316.19
7.3.210.0030.01016.18
7.3.200.0060.00616.15
7.3.190.0060.00616.36
7.3.180.0060.00616.18
7.3.170.0040.00816.18
7.3.160.0030.01016.29
7.3.150.0000.01416.24
7.3.140.0080.00516.20
7.3.130.0060.00716.36
7.3.120.0130.00016.22
7.3.110.0070.00716.07
7.3.100.0070.00716.13
7.3.90.0000.01316.52
7.3.80.0100.00316.32
7.3.70.0100.00316.35
7.3.60.0070.00716.46
7.3.50.0030.01216.44
7.3.40.0080.00516.49
7.3.30.0070.00716.45
7.3.20.0040.01116.38
7.3.10.0040.01316.31
7.3.00.0080.00516.26

preferences:
64.04 ms | 401 KiB | 5 Q