3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump($b ?? 1 ?? 2); // 1 var_dump($b ?? (1 ?? 2)); // 1 var_dump(($b ?? 1) ?? 2); // 1

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)
8.3.40.0090.00618.71
8.3.30.0000.01418.84
8.3.20.0040.00420.16
8.3.10.0050.00223.53
8.3.00.0080.00019.26
8.2.170.0110.00422.96
8.2.160.0110.00420.38
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0050.00317.25
8.2.120.0080.00026.35
8.2.110.0070.00320.94
8.2.100.0070.00317.78
8.2.90.0080.00018.03
8.2.80.0030.00618.22
8.2.70.0030.00617.68
8.2.60.0000.00917.78
8.2.50.0040.00418.10
8.2.40.0040.00420.66
8.2.30.0040.00420.69
8.2.20.0040.00417.49
8.2.10.0000.00818.04
8.2.00.0000.00817.80
8.1.270.0060.00323.96
8.1.260.0070.00028.09
8.1.250.0000.00728.09
8.1.240.0090.00023.97
8.1.230.0040.00822.56
8.1.220.0000.00817.74
8.1.210.0030.00518.77
8.1.200.0050.00317.23
8.1.190.0040.00417.10
8.1.180.0090.00018.10
8.1.170.0040.00418.56
8.1.160.0030.00322.14
8.1.150.0000.00718.75
8.1.140.0000.00719.44
8.1.130.0000.00717.49
8.1.120.0000.00717.20
8.1.110.0030.00317.29
8.1.100.0070.00017.33
8.1.90.0030.00317.29
8.1.80.0020.00517.25
8.1.70.0030.00317.25
8.1.60.0040.00417.52
8.1.50.0000.00817.34
8.1.40.0030.00617.47
8.1.30.0000.00817.63
8.1.20.0000.00817.57
8.1.10.0000.00917.41
8.1.00.0070.00317.31
8.0.300.0050.00319.86
8.0.290.0080.00016.63
8.0.280.0090.00018.31
8.0.270.0000.00717.01
8.0.260.0000.00617.07
8.0.250.0000.00716.75
8.0.240.0000.00816.80
8.0.230.0070.00016.90
8.0.220.0000.00716.83
8.0.210.0070.00016.82
8.0.200.0000.00616.92
8.0.190.0070.00416.82
8.0.180.0000.00716.91
8.0.170.0000.00816.91
8.0.160.0000.00816.89
8.0.150.0030.00316.81
8.0.140.0060.00316.76
8.0.130.0060.00013.18
8.0.120.0040.00416.70
8.0.110.0080.00016.80
8.0.100.0030.00616.67
8.0.90.0040.00416.77
8.0.80.0070.00816.78
8.0.70.0030.00416.93
8.0.60.0050.00316.70
8.0.50.0000.00716.76
8.0.30.0110.01116.95
8.0.20.0150.00617.40
8.0.10.0080.00016.99
8.0.00.0130.00816.78
7.4.330.0020.00216.78
7.4.320.0000.00616.51
7.4.300.0030.00316.24
7.4.290.0030.00316.38
7.4.280.0000.00716.38
7.4.270.0000.00716.36
7.4.260.0030.00316.48
7.4.250.0000.00916.38
7.4.240.0030.00416.39
7.4.230.0030.00316.17
7.4.220.0120.00616.48
7.4.210.0110.00616.47
7.4.200.0000.00716.45
7.4.160.0060.00916.65
7.4.150.0180.00617.40
7.4.140.0180.00617.86
7.4.130.0110.00716.47
7.4.120.0100.00816.39
7.4.110.0130.00916.43
7.4.100.0090.01016.40
7.4.90.0130.00616.44
7.4.80.0100.01319.39
7.4.70.0090.00916.46
7.4.60.0090.00616.43
7.4.50.0060.00616.27
7.4.40.0080.00916.44
7.4.30.0060.01616.29
7.4.00.0060.00914.79
7.3.330.0030.00313.24
7.3.320.0090.00013.04
7.3.310.0070.00016.20
7.3.300.0000.00716.25
7.3.290.0040.00416.25
7.3.280.0090.00716.28
7.3.270.0100.00717.40
7.3.260.0170.00716.19
7.3.250.0090.00816.46
7.3.240.0120.00716.39
7.3.230.0080.00816.49
7.3.210.0140.00316.39
7.3.200.0080.00816.42
7.3.190.0120.00816.17
7.3.180.0090.00916.39
7.3.170.0070.01016.37
7.3.160.0190.00016.18
7.3.120.0080.00914.67
7.3.110.0100.00714.58
7.3.100.0070.00714.80
7.3.90.0060.01114.76
7.3.80.0090.00714.58
7.3.70.0060.00614.71
7.3.60.0080.00614.75
7.3.50.0030.01114.76
7.3.40.0060.00814.74
7.3.30.0130.00214.52
7.3.20.0100.00516.49
7.3.10.0060.00816.59
7.3.00.0060.00716.54
7.2.330.0160.00716.53
7.2.320.0100.01116.48
7.2.310.0140.00316.34
7.2.300.0090.00916.68
7.2.290.0060.00916.59
7.2.250.0070.00915.10
7.2.240.0090.00814.93
7.2.230.0070.00714.97
7.2.220.0020.01114.61
7.2.210.0020.01314.86
7.2.200.0080.00614.60
7.2.190.0050.01014.96
7.2.180.0020.01014.89
7.2.170.0070.00714.87
7.2.130.0110.00416.88
7.2.120.0110.00316.75
7.2.110.0030.01216.41
7.2.100.0090.00916.83
7.2.90.0030.00716.47
7.2.80.0100.00716.68
7.2.70.0040.01116.83
7.2.60.0060.00916.71
7.2.50.0030.01216.77
7.2.40.0030.01316.82
7.2.30.0000.01216.85
7.2.20.0090.00616.91
7.2.10.0060.00616.48
7.2.00.0080.00618.07
7.1.330.0090.00515.42
7.1.320.0100.00315.50
7.1.310.0090.00515.65
7.1.300.0030.00715.43
7.1.290.0060.00815.41
7.1.280.0030.00815.65
7.1.270.0040.01115.57
7.1.260.0030.01115.67
7.1.250.0030.01015.68
7.1.200.0070.00715.71
7.1.100.0030.00918.00
7.1.70.0100.00317.18
7.1.60.0060.01919.36
7.1.50.0060.00616.70
7.1.00.0070.07322.33
7.0.200.0040.00416.66
7.0.60.0100.08019.90
7.0.50.0000.05717.80
7.0.40.0070.08020.02
7.0.30.0570.07019.96
7.0.20.0230.07020.16
7.0.10.0100.05020.20
7.0.00.0070.06020.00
5.6.280.0030.06320.99
5.6.210.0030.06720.53
5.6.200.0000.04718.16
5.6.190.0100.08320.52
5.6.180.0500.05320.41
5.6.170.0430.07320.40
5.6.160.0100.08320.47
5.6.150.0130.07318.18
5.6.140.0000.09318.23
5.6.130.0130.07318.18
5.6.120.0100.04720.95
5.6.110.0100.04021.11
5.6.100.0100.08720.99
5.6.90.0200.06721.09
5.6.80.0200.06720.28
5.5.350.4170.04320.45
5.5.340.0070.08017.94
5.5.330.0100.08320.27
5.5.320.0000.08320.32
5.5.310.0400.07320.32
5.5.300.0000.04018.03
5.5.290.0030.08317.94
5.5.280.0000.09320.86
5.5.270.0100.03720.64
5.5.260.0000.05020.76
5.5.250.0070.03720.66
5.5.240.0330.05720.25

preferences:
49.78 ms | 400 KiB | 5 Q