3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = null; $b = $a ?? clone $a; echo 'hello world';

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)
8.3.60.0030.01616.50
8.3.50.0090.00622.06
8.3.40.0120.00318.83
8.3.30.0090.00618.68
8.3.20.0080.00020.15
8.3.10.0040.00423.59
8.3.00.0040.00423.71
8.2.180.0090.01218.29
8.2.170.0140.00022.96
8.2.160.0070.00720.52
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0060.00320.98
8.2.120.0050.00326.35
8.2.110.0060.00320.25
8.2.100.0000.01117.72
8.2.90.0000.00817.62
8.2.80.0040.00418.04
8.2.70.0060.00317.77
8.2.60.0000.00817.93
8.2.50.0040.00419.23
8.2.40.0060.00320.55
8.2.30.0070.00020.52
8.2.20.0070.00017.59
8.2.10.0080.00017.92
8.2.00.0050.00317.92
8.1.280.0100.01025.92
8.1.270.0120.00621.98
8.1.260.0040.01428.09
8.1.250.0070.00028.09
8.1.240.0060.00323.70
8.1.230.0070.00423.88
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0060.00317.00
8.1.190.0040.00417.10
8.1.180.0040.00418.10
8.1.170.0030.00618.54
8.1.160.0000.00720.73
8.1.150.0080.00018.82
8.1.140.0040.00419.56
8.1.130.0030.00317.66
8.1.120.0080.00017.28
8.1.110.0040.00417.26
8.1.100.0030.00517.29
8.1.90.0050.00317.40
8.1.80.0070.00017.36
8.1.70.0000.00717.36
8.1.60.0030.00617.49
8.1.50.0030.00517.42
8.1.40.0060.00317.54
8.1.30.0060.00317.57
8.1.20.0050.00217.68
8.1.10.0030.00617.52
8.1.00.0040.00417.38
8.0.300.0000.00819.78
8.0.290.0040.00416.58
8.0.280.0050.00518.25
8.0.270.0050.00317.18
8.0.260.0000.00617.04
8.0.250.0060.00017.00
8.0.240.0040.00416.84
8.0.230.0000.00816.81
8.0.220.0000.00816.90
8.0.210.0040.00416.92
8.0.200.0040.00416.93
8.0.190.0050.00316.93
8.0.180.0000.00716.91
8.0.170.0000.00816.81
8.0.160.0040.00416.89
8.0.150.0030.00516.86
8.0.140.0030.00916.81
8.0.130.0000.00613.27
8.0.120.0040.00416.82
8.0.110.0050.00316.79
8.0.100.0000.00716.69
8.0.90.0000.00716.68
8.0.80.0060.00916.86
8.0.70.0040.00416.85
8.0.60.0040.00416.89
8.0.50.0000.00716.91
8.0.30.0100.00917.07
8.0.20.0090.01017.40
8.0.10.0000.00816.84
8.0.00.0070.01116.66
7.4.330.0050.00016.84
7.4.320.0000.00616.44
7.4.300.0000.00716.41
7.4.290.0030.00316.44
7.4.280.0040.00416.48
7.4.270.0000.00616.44
7.4.260.0000.00716.54
7.4.250.0000.00716.52
7.4.240.0020.00516.59
7.4.230.0070.00016.59
7.4.220.0060.01216.53
7.4.210.0090.00916.61
7.4.200.0040.00316.44
7.4.160.0060.00916.63
7.4.150.0090.00917.40
7.4.140.0100.00917.86
7.4.130.0080.00916.56
7.4.120.0090.00916.50
7.4.110.0110.01116.46
7.4.100.0170.00016.65
7.4.90.0120.00916.53
7.4.80.0110.00919.39
7.4.70.0090.00616.60
7.4.60.0170.00316.41
7.4.50.0030.00916.23
7.4.40.0120.00616.49
7.4.30.0130.00616.33
7.4.00.0110.00315.12
7.3.330.0020.00212.99
7.3.320.0050.00013.18
7.3.310.0000.00716.20
7.3.300.0000.00716.30
7.3.290.0080.00616.29
7.3.280.0090.00916.28
7.3.270.0070.01017.40
7.3.260.0100.01616.57
7.3.250.0170.00416.41
7.3.240.0190.00016.53
7.3.230.0070.01716.49
7.3.210.0110.00716.49
7.3.200.0060.01616.27
7.3.190.0090.00616.37
7.3.180.0090.00616.28
7.3.170.0030.01316.45
7.3.160.0120.00316.44
7.3.120.0070.01014.66
7.3.110.0040.00814.66
7.3.100.0060.00615.00
7.3.90.0000.00914.85
7.3.80.0030.00714.87
7.3.70.0040.01114.86
7.3.60.0030.01014.82
7.3.50.0030.01414.70
7.3.40.0000.01614.72
7.3.30.0070.00714.88
7.3.20.0120.00316.70
7.3.10.0080.00216.64
7.3.00.0050.00916.61
7.2.330.0070.01016.64
7.2.320.0140.01016.23
7.2.310.0090.00916.49
7.2.300.0080.00916.57
7.2.290.0110.00616.33
7.2.240.0030.01314.80
7.2.230.0050.00314.65
7.2.220.0040.01414.50
7.2.210.0060.00614.79
7.2.200.0040.00715.01
7.2.190.0000.01414.93
7.2.180.0060.01014.93
7.2.170.0060.01014.78
7.2.160.0110.00714.91
7.2.150.0000.01616.84
7.2.140.0000.01616.79
7.2.130.0080.00516.74
7.2.120.0020.01016.65
7.2.110.0130.00216.67
7.2.100.0030.00916.78
7.2.90.0060.00716.76
7.2.80.0070.00916.70
7.2.70.0070.00816.80
7.2.60.0050.00816.71
7.2.50.0060.00816.62
7.2.40.0080.00316.70
7.2.30.0050.00516.63
7.2.20.0050.01016.76
7.2.10.0080.00316.83
7.2.00.0020.00917.58
7.1.330.0030.00915.57
7.1.320.0030.01315.64
7.1.310.0040.01115.55
7.1.300.0000.01315.54
7.1.290.0040.00715.70
7.1.280.0030.00615.63
7.1.270.0080.00415.57
7.1.260.0060.00715.58
7.1.250.0040.00815.67
7.1.200.0090.00615.44
7.1.100.0090.00617.96
7.1.70.0040.00417.11
7.1.60.0100.01319.52
7.1.50.0030.01716.88
7.1.00.0100.07022.28
7.0.200.0030.00316.67
7.0.60.0070.08719.99
7.0.50.0130.07317.81
7.0.40.0000.04720.02
7.0.30.0330.07320.00
7.0.20.0130.06320.12
7.0.10.0100.05320.12
7.0.00.0070.08019.99
5.6.280.0070.02720.86
5.6.210.0070.08320.61
5.6.200.0070.08318.28
5.6.190.0100.03720.48
5.6.180.0230.08320.61
5.6.170.0270.08020.55
5.6.160.0030.04720.71
5.6.150.0070.08018.12
5.6.140.0070.06018.14
5.6.130.0070.06718.12
5.6.120.0100.05721.05
5.6.110.0130.07021.02
5.6.100.0000.05320.88
5.6.90.0100.09721.11
5.6.80.0130.03020.38
5.5.350.0330.07320.39
5.5.340.0030.03717.98
5.5.330.0100.07720.41
5.5.320.0270.04020.22
5.5.310.0400.07320.36
5.5.300.0100.07718.09
5.5.290.0070.04017.96
5.5.280.0100.06020.87
5.5.270.0130.07720.63
5.5.260.0070.06720.75
5.5.250.0100.07320.68
5.5.240.0330.06020.15

preferences:
50.55 ms | 401 KiB | 5 Q