3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = isset($b) ? $b : -1; $a = $b ?? -1; echo $a; // results: -1 $a = null; $b = null; $c = 10; $d = null; var_dump ($a ?? $b ?? $c ?? $d); // results: 10

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)
8.3.60.0070.01116.63
8.3.50.0180.01121.01
8.3.40.0160.00618.79
8.3.30.0000.01418.42
8.3.20.0070.00020.36
8.3.10.0040.00421.90
8.3.00.0050.00319.56
8.2.180.0040.01218.30
8.2.170.0090.01222.96
8.2.160.0070.00720.53
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0100.00017.63
8.2.110.0060.00322.18
8.2.100.0060.00619.23
8.2.90.0080.00019.22
8.2.80.0000.00817.97
8.2.70.0050.00317.50
8.2.60.0070.00018.03
8.2.50.0030.00618.07
8.2.40.0030.00619.33
8.2.30.0000.00719.84
8.2.20.0000.00717.64
8.2.10.0070.00018.05
8.2.00.0030.00618.15
8.1.280.0040.01525.92
8.1.270.0040.01122.11
8.1.260.0030.00526.35
8.1.250.0070.00028.09
8.1.240.0090.00022.53
8.1.230.0030.00917.42
8.1.220.0030.00617.79
8.1.210.0040.00418.77
8.1.200.0040.00417.23
8.1.190.0060.00317.10
8.1.180.0000.00718.10
8.1.170.0000.00818.29
8.1.160.0070.00021.85
8.1.150.0070.00018.83
8.1.140.0040.00417.29
8.1.130.0000.00717.29
8.1.120.0030.00717.29
8.1.110.0000.00717.33
8.1.100.0040.00417.37
8.1.90.0030.00417.27
8.1.80.0040.00417.29
8.1.70.0040.00417.40
8.1.60.0060.00317.50
8.1.50.0090.00017.35
8.1.40.0000.00917.30
8.1.30.0030.00517.56
8.1.20.0000.00717.57
8.1.10.0000.00817.48
8.1.00.0000.00717.40
8.0.300.0050.00318.77
8.0.290.0000.00716.58
8.0.280.0030.00318.48
8.0.270.0030.00317.31
8.0.260.0030.00316.81
8.0.250.0050.00316.98
8.0.240.0030.00316.94
8.0.230.0030.00316.78
8.0.220.0030.00316.71
8.0.210.0070.00016.71
8.0.200.0000.00616.88
8.0.190.0040.00416.88
8.0.180.0040.00416.90
8.0.170.0040.00416.79
8.0.160.0000.00716.85
8.0.150.0040.00416.68
8.0.140.0030.00316.68
8.0.130.0030.00313.27
8.0.120.0040.00416.73
8.0.110.0000.00716.86
8.0.100.0070.00016.81
8.0.90.0040.00416.85
8.0.80.0090.00916.81
8.0.70.0000.00716.76
8.0.60.0050.00316.82
8.0.50.0000.00716.81
8.0.30.0090.01117.04
8.0.20.0120.00817.40
8.0.10.0070.00016.99
8.0.00.0080.00916.88
7.4.330.0000.00515.08
7.4.320.0000.00616.48
7.4.300.0000.00616.48
7.4.290.0040.00416.38
7.4.280.0040.00316.41
7.4.270.0030.00316.45
7.4.260.0070.00016.31
7.4.250.0070.00016.41
7.4.240.0040.00316.48
7.4.230.0000.00716.46
7.4.220.0160.00916.38
7.4.210.0070.01316.46
7.4.200.0000.00716.38
7.4.160.0060.01216.52
7.4.150.0060.01217.40
7.4.140.0130.00817.86
7.4.130.0040.01316.34
7.4.120.0110.00916.48
7.4.110.0070.01016.62
7.4.100.0070.01316.41
7.4.90.0070.01016.34
7.4.80.0060.01319.39
7.4.70.0070.01116.44
7.4.60.0060.01016.50
7.4.50.0030.00616.54
7.4.40.0090.00916.43
7.4.30.0130.00616.42
7.4.00.0070.01014.84
7.3.330.0060.00013.09
7.3.320.0030.00313.00
7.3.310.0070.00016.24
7.3.300.0030.00316.04
7.3.290.0080.00816.19
7.3.280.0090.00916.20
7.3.270.0140.00417.40
7.3.260.0100.00716.22
7.3.250.0100.01016.24
7.3.240.0100.00616.46
7.3.230.0100.01116.39
7.3.210.0110.00516.23
7.3.200.0130.01016.23
7.3.190.0170.00416.12
7.3.180.0070.01016.37
7.3.170.0040.01116.54
7.3.160.0060.01516.51
7.3.10.0100.01016.27
7.3.00.0120.00616.05
7.2.330.0060.01116.53
7.2.320.0160.00316.15
7.2.310.0060.01116.54
7.2.300.0030.01416.26
7.2.290.0090.00916.32
7.2.130.0140.00316.62
7.2.120.0170.00816.38
7.2.110.0120.00416.59
7.2.100.0100.01016.41
7.2.90.0000.01416.37
7.2.80.0080.00816.19
7.2.70.0040.01116.63
7.2.60.0050.00816.72
7.2.50.0030.00716.57
7.2.40.0070.00716.44
7.2.30.0000.01316.46
7.2.20.0040.00716.37
7.2.10.0070.00416.30
7.2.00.0060.00618.05
7.1.250.0060.00615.10
7.1.200.0150.00815.59
7.1.100.0000.01218.22
7.1.70.0000.00816.92
7.1.60.0080.00419.27
7.1.50.0030.01616.95
7.1.00.0030.07722.35
7.0.200.0090.00016.74
7.0.60.0100.07320.07
7.0.50.0100.05017.80
7.0.40.0100.04720.06
7.0.30.0330.07020.18
7.0.20.0430.07020.20
7.0.10.0170.03720.33
7.0.00.0070.04020.17
5.6.280.0000.05021.02
5.6.210.0030.04720.72
5.6.200.0030.05718.12
5.6.190.0100.08320.63
5.6.180.3200.04720.47
5.6.170.0330.07020.51
5.6.160.0000.04320.48
5.6.150.0070.03318.25
5.6.140.0000.04718.18
5.6.130.0170.04018.12
5.6.120.0070.07020.99
5.6.110.0200.07020.98
5.6.100.0070.08021.00
5.6.90.0070.03720.87
5.6.80.0130.07320.36
5.6.70.4170.04320.42
5.5.350.0070.06020.46
5.5.340.0070.03318.04
5.5.330.0100.06020.19
5.5.320.0200.03720.36
5.5.310.0230.05320.32
5.5.300.0100.08317.99
5.5.290.0170.07018.04
5.5.280.0070.07020.88
5.5.270.0100.08020.94
5.5.260.0030.08720.86
5.5.250.0070.03720.58
5.5.240.0270.07320.15
5.4.450.0830.06319.47
5.4.440.0830.06719.58
5.4.430.0630.06019.62
5.4.420.0830.05319.39
5.4.410.0700.05019.44
5.4.400.0700.04718.84
5.4.390.0770.06019.15
5.4.380.0600.06719.15
5.4.370.0570.06319.37
5.4.360.0630.05319.30
5.4.350.0630.05318.98
5.4.340.0730.05018.86
5.4.320.0800.05319.25
5.4.310.0700.05018.83
5.4.300.0870.04719.16
5.4.290.0800.05019.05
5.4.280.0830.05019.00
5.4.270.0800.05019.14
5.4.260.0600.06019.22
5.4.250.0630.06318.97
5.4.240.0770.05719.24
5.4.230.0770.04318.86
5.4.220.0730.05719.07
5.4.210.0930.03718.97
5.4.200.0700.05719.29
5.4.190.0770.07319.16
5.4.180.0630.05719.29
5.4.170.0800.06019.23
5.4.160.0570.08018.86
5.4.150.1000.05319.13
5.4.140.0670.05016.31
5.4.130.0670.06016.54
5.4.120.0770.05016.49
5.4.110.0800.05016.43
5.4.100.0830.04316.19
5.4.90.0670.05316.62
5.4.80.0600.05316.17
5.4.70.0300.06716.55
5.4.60.0270.03016.39
5.4.50.0070.04016.43
5.4.40.0070.05016.16
5.4.30.0000.03316.16
5.4.20.0270.04716.42

preferences:
55.48 ms | 401 KiB | 5 Q