3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = Null; $alpha = $string ?? 'No Input'; echo $alpha;

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)
8.3.60.0120.00916.11
8.3.50.0120.00621.85
8.3.40.0120.00618.34
8.3.30.0070.00718.75
8.3.20.0000.00822.06
8.3.10.0000.00823.52
8.3.00.0040.00419.74
8.2.180.0060.01216.32
8.2.170.0070.00722.96
8.2.160.0100.00320.53
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0000.00821.05
8.2.120.0030.00526.35
8.2.110.0060.00320.44
8.2.100.0100.00317.73
8.2.90.0040.00419.22
8.2.80.0040.00417.97
8.2.70.0060.00317.63
8.2.60.0060.00318.05
8.2.50.0030.00518.07
8.2.40.0000.00722.28
8.2.30.0080.00020.51
8.2.20.0000.00817.54
8.2.10.0070.00018.09
8.2.00.0070.00018.05
8.1.280.0120.00425.92
8.1.270.0080.00023.99
8.1.260.0070.00028.09
8.1.250.0050.00328.09
8.1.240.0060.00322.07
8.1.230.0030.00721.04
8.1.220.0000.00817.74
8.1.210.0030.00618.77
8.1.200.0030.00617.35
8.1.190.0060.00317.00
8.1.180.0000.00718.10
8.1.170.0030.00618.52
8.1.160.0040.00420.61
8.1.150.0000.00818.81
8.1.140.0030.00519.41
8.1.130.0000.00717.54
8.1.120.0070.00017.42
8.1.110.0000.00717.39
8.1.100.0000.00717.40
8.1.90.0000.00817.36
8.1.80.0000.00817.27
8.1.70.0030.00317.27
8.1.60.0000.00817.53
8.1.50.0080.00017.35
8.1.40.0000.00817.33
8.1.30.0030.00517.51
8.1.20.0040.00417.61
8.1.10.0020.00517.49
8.1.00.0000.00717.42
8.0.300.0050.00218.77
8.0.290.0060.00316.75
8.0.280.0070.00018.30
8.0.270.0030.00317.27
8.0.260.0060.00317.14
8.0.250.0030.00316.94
8.0.240.0000.00716.92
8.0.230.0050.00216.79
8.0.220.0000.00716.83
8.0.210.0000.00716.80
8.0.200.0080.00316.90
8.0.190.0040.00416.89
8.0.180.0070.00016.83
8.0.170.0040.00416.73
8.0.160.0060.00316.86
8.0.150.0070.00016.67
8.0.140.0040.00416.75
8.0.130.0000.00613.17
8.0.120.0040.00416.65
8.0.110.0040.00416.88
8.0.100.0040.00416.63
8.0.90.0030.00516.88
8.0.80.0030.01216.79
8.0.70.0030.00616.84
8.0.60.0000.00716.77
8.0.50.0050.00216.61
8.0.30.0110.00917.08
8.0.20.0100.00917.40
8.0.10.0000.00816.92
8.0.00.0100.01116.63
7.4.330.0000.00516.83
7.4.320.0020.00516.55
7.4.300.0000.00616.53
7.4.290.0070.00016.37
7.4.280.0040.00416.36
7.4.270.0000.00616.54
7.4.260.0000.00716.41
7.4.250.0000.00716.38
7.4.240.0050.00216.43
7.4.230.0070.00016.61
7.4.220.0070.01716.46
7.4.210.0060.00816.48
7.4.200.0020.00516.47
7.4.160.0050.01016.32
7.4.150.0090.00917.40
7.4.140.0140.00717.86
7.4.130.0060.01516.44
7.4.120.0100.00716.46
7.4.110.0180.00616.46
7.4.100.0140.00316.44
7.4.90.0120.00916.32
7.4.80.0130.00719.39
7.4.70.0130.00316.40
7.4.60.0040.01216.49
7.4.50.0000.01316.28
7.4.40.0100.01316.34
7.4.30.0120.00616.16
7.4.00.0030.01215.13
7.3.330.0050.00013.11
7.3.320.0050.00213.12
7.3.310.0050.00216.14
7.3.300.0060.00016.07
7.3.290.0040.00416.21
7.3.280.0090.00816.20
7.3.270.0090.00917.40
7.3.260.0120.00916.10
7.3.250.0110.00816.40
7.3.240.0140.00716.23
7.3.230.0090.00916.55
7.3.210.0130.00616.28
7.3.200.0140.00616.14
7.3.190.0040.01316.57
7.3.180.0030.01416.34
7.3.170.0000.01616.27
7.3.160.0130.00516.47
7.2.330.0030.01216.56
7.2.320.0080.00816.50
7.2.310.0110.00716.63
7.2.300.0110.00616.35
7.2.290.0160.00016.61
7.2.60.0070.00716.78
7.2.00.0100.00019.25
7.1.200.0060.00615.53
7.1.100.0000.01517.98
7.1.70.0040.00416.71
7.1.60.0070.01819.52
7.1.50.0070.01416.77
7.1.00.0000.08022.35
7.0.200.0000.00816.39
7.0.60.0100.06319.96
7.0.50.0070.06317.87
7.0.40.0070.08320.07
7.0.30.0200.05020.02
7.0.20.0370.06720.09
7.0.10.0000.04720.09
7.0.00.0000.04720.17
5.6.280.0000.07720.92
5.6.210.0070.08320.70
5.6.200.0100.07018.28
5.6.190.0070.05720.46
5.6.180.0200.05320.63
5.6.170.0430.05320.39
5.6.160.0070.04720.71
5.6.150.0100.07718.14
5.6.140.0030.04018.21
5.6.130.0100.06718.19
5.6.120.0130.07320.99
5.6.110.0130.08021.00
5.6.100.0030.04721.07
5.6.90.0130.04321.11
5.6.80.0030.05320.50
5.5.350.0300.05320.40
5.5.340.0030.08318.00
5.5.330.0030.08720.13
5.5.320.0170.05720.27
5.5.310.0130.04320.23
5.5.300.0070.04017.96
5.5.290.0100.03718.04
5.5.280.0070.03720.86
5.5.270.0170.07320.86
5.5.260.0070.08020.79
5.5.250.0200.06320.46
5.5.240.4200.03720.16

preferences:
56.09 ms | 401 KiB | 5 Q