3v4l.org

run code in 300+ PHP versions simultaneously
<?php $y = ''; $b = 1; $x = $y ?? $b; var_dump($x);

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)
8.3.60.0140.00718.43
8.3.50.0100.01121.94
8.3.40.0110.00718.71
8.3.30.0100.00318.63
8.3.20.0040.00420.13
8.3.10.0040.00421.75
8.3.00.0040.00420.29
8.2.180.0120.00616.38
8.2.170.0060.01022.96
8.2.160.0080.00620.81
8.2.150.0050.00224.18
8.2.140.0040.00424.66
8.2.130.0000.00726.16
8.2.120.0090.00017.50
8.2.110.0030.00620.64
8.2.100.0090.00317.63
8.2.90.0040.00419.07
8.2.80.0050.00317.97
8.2.70.0060.00317.63
8.2.60.0000.00817.90
8.2.50.0060.00318.07
8.2.40.0000.00719.40
8.2.30.0070.00020.50
8.2.20.0040.00417.61
8.2.10.0040.00418.12
8.2.00.0040.00418.14
8.1.280.0060.00925.92
8.1.270.0000.00823.91
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0090.00023.96
8.1.230.0090.00317.42
8.1.220.0000.00817.74
8.1.210.0060.00318.77
8.1.200.0060.00317.22
8.1.190.0050.00317.10
8.1.180.0040.00418.10
8.1.170.0000.00818.65
8.1.160.0000.00721.91
8.1.150.0000.00818.82
8.1.140.0030.00517.29
8.1.130.0000.00717.56
8.1.120.0050.00217.41
8.1.110.0050.00217.29
8.1.100.0040.00417.25
8.1.90.0050.00217.42
8.1.80.0060.00317.41
8.1.70.0000.00717.39
8.1.60.0050.00317.53
8.1.50.0040.00417.42
8.1.40.0000.01117.41
8.1.30.0000.00917.42
8.1.20.0060.00317.52
8.1.10.0070.00017.52
8.1.00.0000.00817.45
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0030.00318.36
8.0.270.0060.00317.09
8.0.260.0030.00317.19
8.0.250.0050.00216.88
8.0.240.0000.00716.82
8.0.230.0030.00716.95
8.0.220.0040.00416.71
8.0.210.0000.00716.76
8.0.200.0000.00716.90
8.0.190.0080.00016.87
8.0.180.0040.00816.80
8.0.170.0000.00816.86
8.0.160.0070.00016.88
8.0.150.0040.00416.79
8.0.140.0040.00416.80
8.0.130.0000.00513.21
8.0.120.0040.00416.73
8.0.110.0040.00416.74
8.0.100.0000.00816.79
8.0.90.0040.00416.85
8.0.80.0090.00616.71
8.0.70.0000.00816.84
8.0.60.0030.00316.95
8.0.50.0000.00716.70
8.0.30.0070.00916.97
8.0.20.0110.01117.40
8.0.10.0000.00717.02
8.0.00.0120.00716.54
7.4.330.0030.00315.08
7.4.320.0000.00616.44
7.4.300.0000.00716.51
7.4.290.0000.00716.43
7.4.280.0020.00816.34
7.4.270.0000.00616.54
7.4.260.0030.00516.32
7.4.250.0030.00516.39
7.4.240.0020.00516.49
7.4.230.0000.00716.65
7.4.220.0110.00716.54
7.4.210.0090.00916.45
7.4.200.0030.00316.37
7.4.160.0090.00616.33
7.4.150.0120.00617.40
7.4.140.0130.01117.86
7.4.130.0120.00816.40
7.4.120.0090.00816.43
7.4.110.0070.01016.45
7.4.100.0030.01316.46
7.4.90.0110.00716.50
7.4.80.0110.00519.39
7.4.70.0150.00316.30
7.4.60.0170.00016.45
7.4.50.0030.00616.42
7.4.40.0100.00716.47
7.4.30.0060.01216.33
7.4.00.0050.00714.64
7.3.330.0000.00513.05
7.3.320.0000.00513.04
7.3.310.0030.00316.29
7.3.300.0000.00716.15
7.3.290.0090.00516.21
7.3.280.0060.01016.19
7.3.270.0160.00017.40
7.3.260.0080.00816.18
7.3.250.0100.00616.35
7.3.240.0110.01116.32
7.3.230.0080.01616.39
7.3.210.0090.00616.17
7.3.200.0110.01116.09
7.3.190.0030.01316.41
7.3.180.0110.00816.19
7.3.170.0130.00716.31
7.3.160.0100.00616.17
7.3.120.0100.00614.79
7.3.110.0100.00614.75
7.3.100.0060.00714.79
7.3.90.0040.01014.67
7.3.80.0050.00714.66
7.3.70.0080.00414.55
7.3.60.0060.00514.63
7.3.50.0020.01014.64
7.3.40.0120.00514.54
7.3.30.0040.00714.44
7.3.20.0050.00616.42
7.3.10.0040.00616.36
7.3.00.0050.00816.39
7.2.330.0110.00716.42
7.2.320.0120.01216.38
7.2.310.0060.01516.43
7.2.300.0110.01116.13
7.2.290.0130.00616.59
7.2.250.0090.00614.62
7.2.240.0060.00914.95
7.2.230.0020.01214.64
7.2.220.0050.00914.93
7.2.210.0020.00814.98
7.2.200.0070.00714.87
7.2.190.0030.01014.69
7.2.180.0070.00414.95
7.2.170.0040.01014.81
7.2.160.0070.00214.83
7.2.150.0050.00716.85
7.2.140.0100.00416.75
7.2.130.0070.00416.80
7.2.120.0020.01116.74
7.2.110.0050.00716.78
7.2.100.0030.01316.87
7.2.90.0050.00716.68
7.2.80.0070.00716.79
7.2.70.0050.01016.75
7.2.60.0050.01016.74
7.2.50.0020.01416.77
7.2.40.0070.00716.69
7.2.30.0050.00616.89
7.2.20.0000.01316.76
7.2.10.0060.00716.83
7.2.00.0060.00617.68
7.1.330.0070.00715.67
7.1.320.0030.00915.58
7.1.310.0080.00515.52
7.1.300.0040.00715.78
7.1.290.0060.00515.59
7.1.280.0050.00815.68
7.1.270.0040.00615.60
7.1.260.0050.00715.63
7.1.250.0030.01015.77
7.1.200.0030.00615.75
7.1.100.0040.01118.00
7.1.70.0070.01017.29
7.1.60.0090.01519.11
7.1.50.0200.01034.64
7.1.00.0000.08022.44
7.0.200.0000.01116.55
7.0.60.0100.07719.85
7.0.50.0070.08017.84
7.0.40.0070.05020.25
7.0.30.0300.05020.13
7.0.20.0370.08020.12
7.0.10.0030.08720.33
7.0.00.0070.04320.17
5.6.280.0030.04721.02
5.6.210.0100.07720.76
5.6.200.0070.03718.19
5.6.190.0030.06320.34
5.6.180.0270.08020.58
5.6.170.0230.04320.54
5.6.160.0070.04720.44
5.6.150.0070.08018.23
5.6.140.0030.08018.14
5.6.130.0000.05018.26
5.6.120.0070.08321.10
5.6.110.0100.04320.96
5.6.100.0130.03321.13
5.6.90.0070.03721.01
5.6.80.0070.03720.52
5.5.350.0030.08020.46
5.5.340.0230.06718.05
5.5.330.0000.04320.47
5.5.320.0100.03720.26
5.5.310.0170.05320.24
5.5.300.0030.05718.01
5.5.290.0170.07717.93
5.5.280.0100.03720.87
5.5.270.0130.08020.66
5.5.260.0170.07320.88
5.5.250.0130.07020.70
5.5.240.0230.05720.16
5.4.450.0830.05319.62
5.4.440.0930.06319.58
5.4.430.0770.05319.54
5.4.420.0800.05319.16
5.4.410.0770.05719.09
5.4.400.0700.06018.86
5.4.390.0900.04719.11
5.4.380.0830.05019.01
5.4.370.0970.05319.06
5.4.360.0900.05019.29
5.4.350.0770.05319.15
5.4.340.0800.05719.31
5.4.320.0930.06319.02
5.4.310.1030.04719.13
5.4.300.1100.04719.14
5.4.290.1200.06019.30
5.4.280.1100.05319.28
5.4.270.1130.05319.25
5.4.260.1000.04719.37
5.4.250.0970.05319.25
5.4.240.1070.06319.10
5.4.230.0770.06019.25
5.4.220.0970.06018.86
5.4.210.1000.05019.00
5.4.200.0970.04019.38
5.4.190.0830.05719.00
5.4.180.0900.05718.79
5.4.170.0830.05319.13
5.4.160.0730.05719.23
5.4.150.0800.05719.13
5.4.140.0930.04316.53
5.4.130.0970.04316.55
5.4.120.0830.04016.39
5.4.110.0830.05316.42
5.4.100.1170.05716.28
5.4.90.1170.04716.43
5.4.80.0900.05016.52
5.4.70.1100.06316.43
5.4.60.0870.04716.60
5.4.50.0770.05016.61
5.4.40.0770.05016.60
5.4.30.0830.05016.24
5.4.20.0770.05016.59
5.4.10.1170.03316.59
5.4.00.0930.05315.88
5.3.290.1000.05714.60
5.3.280.0970.05714.54
5.3.270.1130.04714.45
5.3.260.1130.04014.54
5.3.250.1130.05014.45
5.3.240.1170.04014.49
5.3.230.1070.05014.39
5.3.220.0730.06014.41
5.3.210.0830.05014.55
5.3.200.0870.04314.52
5.3.190.0800.05014.41
5.3.180.0770.05314.36
5.3.170.0830.05014.41
5.3.160.1070.04714.46
5.3.150.1130.04314.45
5.3.140.1030.05314.51
5.3.130.1070.05014.54
5.3.120.0930.05314.39
5.3.110.0830.05014.43
5.3.100.0900.05014.06
5.3.90.0800.07013.85
5.3.80.0930.06013.96
5.3.70.0900.05713.82
5.3.60.0900.04713.85
5.3.50.0830.05314.04
5.3.40.0800.05013.93
5.3.30.0930.04713.93
5.3.20.1070.03713.52
5.3.10.0870.04313.54
5.3.00.0800.05313.57
5.2.170.0930.03711.03
5.2.160.0770.04011.30
5.2.150.0700.04010.98
5.2.140.0670.04310.94
5.2.130.0670.04310.95
5.2.120.0830.04311.18
5.2.110.0870.04710.93
5.2.100.0800.05310.94
5.2.90.1100.04010.95
5.2.80.1030.06011.04
5.2.70.0900.04311.25
5.2.60.0970.06010.89
5.2.50.0900.05310.81
5.2.40.0600.03710.97
5.2.30.0570.04311.02
5.2.20.0600.03310.89
5.2.10.0500.04710.88
5.2.00.0570.03710.71
5.1.60.0530.0339.91
5.1.50.0470.03710.08
5.1.40.0530.0379.96
5.1.30.0500.03710.50
5.1.20.0600.03710.37
5.1.10.0770.03310.08
5.1.00.0670.03710.13
5.0.50.0370.0308.48
5.0.40.0300.0238.42
5.0.30.0300.0408.28
5.0.20.0270.0378.12
5.0.10.0270.0278.09
5.0.00.0270.0438.38
4.4.90.0300.0275.98
4.4.80.0270.0206.00
4.4.70.0200.0276.00
4.4.60.0330.0236.00
4.4.50.0430.0276.00
4.4.40.0370.0476.02
4.4.30.0430.0236.03
4.4.20.0370.0276.04
4.4.10.0230.0236.04
4.4.00.0300.0336.04
4.3.110.0330.0306.04
4.3.100.0300.0306.05
4.3.90.0370.0206.05
4.3.80.0300.0306.06
4.3.70.0300.0176.06
4.3.60.0300.0206.07
4.3.50.0300.0236.07
4.3.40.0330.0276.07
4.3.30.0170.0276.07
4.3.20.0130.0206.08
4.3.10.0130.0206.09
4.3.00.0170.0176.09

preferences:
60.59 ms | 401 KiB | 5 Q