3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 12; $b = null; $c = $x ?? $b ?? $a; echo $c;

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)
8.3.60.0150.01216.38
8.3.50.0100.00821.99
8.3.40.0150.00018.48
8.3.30.0080.00618.55
8.3.20.0070.00020.21
8.3.10.0040.00423.53
8.3.00.0050.00319.38
8.2.180.0050.01018.37
8.2.170.0090.00622.96
8.2.160.0070.01020.41
8.2.150.0070.00024.18
8.2.140.0090.00024.66
8.2.130.0030.00517.63
8.2.120.0000.00726.35
8.2.110.0030.00621.93
8.2.100.0040.00817.72
8.2.90.0050.00319.05
8.2.80.0040.00417.97
8.2.70.0040.00417.63
8.2.60.0040.00417.80
8.2.50.0040.00418.07
8.2.40.0000.00719.33
8.2.30.0070.00020.70
8.2.20.0060.00317.68
8.2.10.0000.00818.16
8.2.00.0000.00717.99
8.1.280.0110.01125.92
8.1.270.0070.00323.91
8.1.260.0000.00828.09
8.1.250.0060.00328.09
8.1.240.0030.00623.96
8.1.230.0040.00719.09
8.1.220.0080.00017.79
8.1.210.0080.00018.77
8.1.200.0000.01017.00
8.1.190.0000.00817.10
8.1.180.0050.00318.10
8.1.170.0040.00418.62
8.1.160.0000.00721.95
8.1.150.0000.00718.82
8.1.140.0040.00419.47
8.1.130.0040.00417.63
8.1.120.0040.00417.41
8.1.110.0050.00217.29
8.1.100.0040.00417.41
8.1.90.0000.00717.22
8.1.80.0070.00017.26
8.1.70.0030.00517.36
8.1.60.0040.00417.42
8.1.50.0030.00617.46
8.1.40.0040.00417.35
8.1.30.0050.00317.66
8.1.20.0000.00717.57
8.1.10.0000.00817.52
8.1.00.0080.00017.36
8.0.300.0040.00418.77
8.0.290.0000.00816.75
8.0.280.0050.00318.44
8.0.270.0030.00317.17
8.0.260.0080.00017.27
8.0.250.0000.00616.85
8.0.240.0000.00716.93
8.0.230.0050.00316.90
8.0.220.0000.00716.71
8.0.210.0000.00716.83
8.0.200.0060.00016.82
8.0.190.0070.00016.89
8.0.180.0060.00316.74
8.0.170.0000.00816.86
8.0.160.0030.00316.88
8.0.150.0030.00316.74
8.0.140.0000.00716.66
8.0.130.0070.00013.31
8.0.120.0040.00416.84
8.0.110.0000.00716.82
8.0.100.0040.00416.80
8.0.90.0070.00016.77
8.0.80.0070.00716.86
8.0.70.0080.00016.71
8.0.60.0040.00416.67
8.0.50.0040.00416.64
8.0.30.0100.01117.15
8.0.20.0090.00917.40
8.0.10.0000.00716.92
8.0.00.0090.00916.83
7.4.330.0000.00715.08
7.4.320.0030.00316.49
7.4.300.0000.00716.56
7.4.290.0030.00316.46
7.4.280.0030.00616.57
7.4.270.0000.00816.46
7.4.260.0000.00716.36
7.4.250.0030.00516.31
7.4.240.0050.00216.42
7.4.230.0030.00316.41
7.4.220.0030.01616.49
7.4.210.0060.00916.54
7.4.200.0000.00716.63
7.4.160.0030.01316.38
7.4.150.0090.00917.40
7.4.140.0090.00917.86
7.4.130.0100.00716.44
7.4.120.0040.01416.58
7.4.110.0130.00316.43
7.4.100.0090.00916.37
7.4.90.0110.01116.55
7.4.80.0100.01319.39
7.4.70.0100.00916.46
7.4.60.0030.01516.46
7.4.50.0030.01016.26
7.4.40.0100.01316.63
7.4.30.0100.01016.36
7.4.00.0100.00314.72
7.3.330.0000.00613.09
7.3.320.0030.00313.05
7.3.310.0030.00316.17
7.3.300.0030.00316.21
7.3.290.0060.01016.19
7.3.280.0090.00716.22
7.3.270.0130.00317.40
7.3.260.0140.00316.42
7.3.250.0120.00516.38
7.3.240.0080.00816.25
7.3.230.0130.00416.39
7.3.210.0030.01316.30
7.3.200.0130.00616.13
7.3.190.0100.01016.34
7.3.180.0060.01016.55
7.3.170.0150.00016.27
7.3.160.0090.00916.55
7.3.10.0140.00016.05
7.3.00.0110.00016.39
7.2.330.0100.01016.56
7.2.320.0100.01316.54
7.2.310.0060.00916.25
7.2.300.0070.01016.56
7.2.290.0060.01316.54
7.2.130.0070.00716.39
7.2.120.0130.00016.63
7.2.110.0080.01116.32
7.2.100.0030.00716.00
7.2.90.0060.00916.66
7.2.80.0000.01716.82
7.2.70.0060.01216.70
7.2.60.0080.00716.47
7.2.50.0030.01616.75
7.2.40.0070.01016.73
7.2.30.0190.00816.88
7.2.20.0220.00016.54
7.2.10.0040.01316.42
7.2.00.0040.00917.91
7.1.250.0000.00915.07
7.1.200.0110.00015.68
7.1.100.0070.00318.24
7.1.70.0090.00317.24
7.1.60.0140.01019.36
7.1.50.0060.01616.89
7.1.00.0070.05722.42
7.0.200.0000.00816.74
7.0.60.0070.07319.89
7.0.50.0100.08317.66
7.0.40.0130.08319.98
7.0.30.0400.08020.18
7.0.20.0230.04320.08
7.0.10.0000.04720.16
7.0.00.0130.06720.00
5.6.280.0030.03020.78
5.6.210.0070.05020.66
5.6.200.0130.08018.19
5.6.190.0100.04720.61
5.6.180.0370.04720.61
5.6.170.0470.06720.50
5.6.160.0000.05020.54
5.6.150.0000.07318.25
5.6.140.0070.04718.12
5.6.130.0030.06318.18
5.6.120.0070.03721.03
5.6.110.0070.04021.11
5.6.100.0070.07321.10
5.6.90.0030.05321.10
5.6.80.0070.08020.46
5.5.350.3800.03720.48
5.5.340.0130.06318.09
5.5.330.0100.05320.57
5.5.320.0000.05720.37
5.5.310.0200.06320.34
5.5.300.0070.07717.91
5.5.290.0100.07718.08
5.5.280.0070.06020.63
5.5.270.0000.09020.96
5.5.260.0030.07720.89
5.5.250.0130.07720.58
5.5.240.0270.07320.31

preferences:
60.29 ms | 401 KiB | 5 Q