3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'a'; echo isset($a) ?? 'b';

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)
8.3.70.0170.00316.63
8.3.60.0130.00716.25
8.3.50.0110.00821.08
8.3.40.0100.00718.54
8.3.30.0060.01018.60
8.3.20.0060.00320.12
8.3.10.0070.00023.66
8.3.00.0080.00019.67
8.2.180.0120.00318.16
8.2.170.0070.01322.96
8.2.160.0130.00320.46
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00417.50
8.2.110.0040.00722.24
8.2.100.0030.00817.63
8.2.90.0000.00819.06
8.2.80.0030.00517.97
8.2.70.0000.00817.63
8.2.60.0040.00417.80
8.2.50.0080.00018.07
8.2.40.0040.00419.52
8.2.30.0070.00019.72
8.2.20.0000.00717.58
8.2.10.0000.00718.04
8.2.00.0080.00017.89
8.1.280.0150.00025.92
8.1.270.0080.00020.43
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0030.00622.50
8.1.230.0070.00417.42
8.1.220.0080.00017.79
8.1.210.0040.00418.77
8.1.200.0030.00617.35
8.1.190.0000.00917.23
8.1.180.0050.00318.10
8.1.170.0030.00518.64
8.1.160.0080.00021.81
8.1.150.0000.00718.92
8.1.140.0030.00517.30
8.1.130.0040.00417.54
8.1.120.0070.00017.41
8.1.110.0000.00717.42
8.1.100.0030.00717.45
8.1.90.0000.00717.29
8.1.80.0040.00417.36
8.1.70.0020.00517.41
8.1.60.0040.00817.55
8.1.50.0030.00517.56
8.1.40.0030.00517.38
8.1.30.0000.00817.62
8.1.20.0080.00017.60
8.1.10.0040.00417.46
8.1.00.0040.00417.46
8.0.300.0040.00418.77
8.0.290.0000.00716.63
8.0.280.0030.00318.42
8.0.270.0000.00717.24
8.0.260.0060.00017.23
8.0.250.0000.00716.96
8.0.240.0000.00816.88
8.0.230.0000.00716.79
8.0.220.0030.00316.82
8.0.210.0040.00416.83
8.0.200.0090.00016.85
8.0.190.0040.00416.71
8.0.180.0050.00216.73
8.0.170.0050.00216.86
8.0.160.0030.00316.72
8.0.150.0000.00816.77
8.0.140.0000.00716.76
8.0.130.0000.00813.27
8.0.120.0030.00516.79
8.0.110.0000.00816.73
8.0.100.0040.00416.80
8.0.90.0080.00016.82
8.0.80.0090.00616.77
8.0.70.0020.00516.61
8.0.60.0070.00016.93
8.0.50.0000.00716.71
8.0.30.0110.00717.10
8.0.20.0100.01217.40
8.0.10.0000.00716.90
8.0.00.0140.00416.63
7.4.330.0050.00015.08
7.4.320.0000.00616.38
7.4.300.0000.00616.53
7.4.290.0000.00716.53
7.4.280.0000.00816.37
7.4.270.0030.00316.42
7.4.260.0040.00416.35
7.4.250.0000.00716.41
7.4.240.0040.00416.53
7.4.230.0040.00416.58
7.4.220.0060.01616.32
7.4.210.0080.00816.51
7.4.200.0000.00716.59
7.4.160.0090.00616.43
7.4.150.0150.00917.40
7.4.140.0100.02717.86
7.4.130.0080.01016.41
7.4.120.0080.00816.36
7.4.110.0100.01016.38
7.4.100.0070.01016.49
7.4.90.0070.01016.34
7.4.80.0100.00719.39
7.4.70.0120.01116.60
7.4.60.0030.01316.43
7.4.50.0060.00316.53
7.4.40.0060.01016.43
7.4.30.0120.01216.28
7.4.10.0090.00914.63
7.4.00.0090.00614.86
7.3.330.0000.00612.86
7.3.320.0060.00012.98
7.3.310.0030.00316.17
7.3.300.0070.00016.09
7.3.290.0000.00616.12
7.3.280.0100.00816.11
7.3.270.0070.01017.40
7.3.260.0170.00716.39
7.3.250.0100.00816.29
7.3.240.0150.00916.39
7.3.230.0130.00316.39
7.3.210.0100.00616.16
7.3.200.0100.00616.44
7.3.190.0080.00816.11
7.3.180.0060.00916.06
7.3.170.0130.00316.27
7.3.160.0090.00616.19
7.3.130.0130.00614.63
7.3.120.0060.01014.79
7.3.110.0070.01114.77
7.3.100.0050.00914.68
7.3.90.0080.00614.76
7.3.80.0110.00414.70
7.3.70.0070.00914.80
7.3.60.0070.00714.42
7.3.50.0080.00714.73
7.3.40.0040.01114.69
7.3.30.0080.00614.67
7.3.20.0040.00916.55
7.3.10.0030.00916.54
7.3.00.0060.00616.46
7.2.330.0110.01116.57
7.2.320.0000.01716.53
7.2.310.0160.00616.23
7.2.300.0060.01016.64
7.2.290.0190.00316.23
7.2.260.0060.01314.96
7.2.250.0050.01214.88
7.2.240.0100.00814.85
7.2.230.0050.01114.72
7.2.220.0030.01015.06
7.2.210.0050.00714.66
7.2.200.0030.01215.02
7.2.190.0050.00714.79
7.2.180.0060.00714.89
7.2.170.0060.00714.85
7.2.160.0070.00715.03
7.2.150.0060.00616.86
7.2.140.0110.00416.75
7.2.130.0000.00916.73
7.2.120.0000.01516.86
7.2.110.0070.00716.82
7.2.100.0000.01116.75
7.2.90.0000.01516.43
7.2.80.0040.01116.76
7.2.70.0160.00316.85
7.2.60.0090.00616.73
7.2.50.0060.01216.91
7.2.40.0070.00716.81
7.2.30.0080.00416.64
7.2.20.0090.00616.87
7.2.10.0040.00716.79
7.2.00.0050.01018.02
7.1.330.0070.00815.63
7.1.320.0090.00515.74
7.1.310.0060.00815.56
7.1.300.0050.00815.56
7.1.290.0050.00715.53
7.1.280.0060.01015.57
7.1.270.0050.00815.43
7.1.260.0060.00515.65
7.1.250.0030.01315.45
7.1.240.0030.00915.83
7.1.230.0130.00315.69
7.1.220.0070.01015.75
7.1.210.0030.00715.70
7.1.200.0080.00515.67
7.1.190.0030.01215.51
7.1.180.0060.00915.68
7.1.170.0120.00415.80
7.1.160.0030.01215.40
7.1.150.0070.00715.46
7.1.140.0100.00615.64
7.1.130.0060.00615.61
7.1.120.0060.00315.54
7.1.110.0060.00615.48
7.1.100.0060.00616.60
7.1.90.0070.00715.89
7.1.80.0100.00015.81
7.1.70.0030.00816.36
7.1.60.0090.00617.79
7.1.50.0030.00816.04
7.1.40.0030.00615.81
7.1.30.0100.00315.71
7.1.20.0030.00615.54
7.1.10.0030.01215.39
7.1.00.0050.04018.95
7.0.330.0030.01115.36
7.0.320.0030.01214.96
7.0.310.0090.00615.36
7.0.300.0100.00315.31
7.0.290.0080.00415.31
7.0.280.0030.01015.26
7.0.270.0040.01115.06
7.0.260.0030.00715.27
7.0.250.0070.00715.27
7.0.240.0030.01015.12
7.0.230.0070.00415.29
7.0.220.0070.01015.35
7.0.210.0060.00615.12
7.0.200.0030.00815.85
7.0.190.0000.01215.12
7.0.180.0040.01115.17
7.0.170.0030.01015.36
7.0.160.0120.00615.54
7.0.150.0000.01215.28
7.0.140.0060.01015.01
7.0.130.0030.01015.08
7.0.120.0060.00915.31
7.0.110.0090.03717.50
7.0.100.0050.02517.55
7.0.90.0170.03917.73
7.0.80.0100.03117.53
7.0.70.0080.03417.41
7.0.60.0060.02617.57
7.0.50.0070.04017.62
7.0.40.0050.03416.62
7.0.30.0050.02916.47
7.0.20.0040.02416.52
7.0.10.0060.03216.56
7.0.00.0020.02916.43
5.6.400.0070.00714.21
5.6.390.0100.00314.32
5.6.380.0030.00613.96
5.6.370.0070.00614.42
5.6.360.0070.00714.00
5.6.350.0070.00414.16
5.6.340.0030.01014.23
5.6.330.0030.01014.05
5.6.320.0030.01213.97
5.6.310.0060.00614.23
5.6.300.0120.00314.13
5.6.290.0040.00414.09
5.6.280.0040.02017.62
5.6.270.0130.00314.24
5.6.260.0070.02017.22
5.6.250.0120.03317.46
5.6.240.0070.04317.45
5.6.230.0020.04217.38
5.6.220.0080.03017.35
5.6.210.0100.03917.41
5.6.200.0050.04317.35
5.6.190.0050.04717.25
5.6.180.0030.02417.32
5.6.170.0060.02117.30
5.6.160.0050.02517.28
5.6.150.0000.02817.20
5.6.140.0070.03017.35
5.6.130.0050.02317.39
5.6.120.0090.03417.20
5.6.110.0030.02517.34
5.6.100.0040.03717.34
5.6.90.0050.02117.34
5.6.80.0090.03816.92
5.6.70.0080.01817.02
5.6.60.0070.02316.96
5.6.50.0030.03316.92
5.6.40.0050.03816.88
5.6.30.0050.02717.05
5.6.20.0040.02417.03
5.6.10.0020.02317.09
5.6.00.0020.02816.90
5.5.380.0030.04515.87
5.5.370.0020.03215.86
5.5.360.0050.04715.60
5.5.350.0030.02815.72
5.5.340.0020.02616.03
5.5.330.0080.02215.87
5.5.320.0020.02616.11
5.5.310.0030.02516.00
5.5.300.0110.03015.94
5.5.290.0050.02316.29
5.5.280.0030.02516.01
5.5.270.0050.02415.99
5.5.260.0070.04216.08
5.5.250.0080.04015.94
5.5.240.0030.02515.56
5.5.230.0030.03115.85
5.5.220.0050.04215.73
5.5.210.0130.03515.68
5.5.200.0050.02115.65
5.5.190.0080.02215.67
5.5.180.0020.02215.76
5.5.170.0070.00714.11
5.5.160.0010.02615.61
5.5.150.0020.02315.61
5.5.140.0030.02115.59
5.5.130.0040.02215.68
5.5.120.0020.02715.76
5.5.110.0050.01915.45
5.5.100.0050.02315.64
5.5.90.0020.02315.71
5.5.80.0030.02115.52
5.5.70.0050.02015.50
5.5.60.0040.02215.71
5.5.50.0030.02615.58
5.5.40.0070.01815.61
5.5.30.0090.01515.69
5.5.20.0050.02515.70
5.5.10.0020.02715.62
5.5.00.0090.01815.77
5.4.450.0030.02315.88
5.4.440.0070.04215.86
5.4.430.0050.02315.81
5.4.420.0040.04015.82
5.4.410.0100.01715.74
5.4.400.0020.02415.78
5.4.390.0080.04015.83
5.4.380.0030.03415.65
5.4.370.0070.01915.63
5.4.360.0060.02315.66
5.4.350.0050.02115.72
5.4.340.0080.01515.65
5.4.330.0030.00712.38
5.4.320.0020.02115.66
5.4.310.0020.02515.67
5.4.300.0050.02015.75
5.4.290.0000.02315.83
5.4.280.0070.02015.65
5.4.270.0020.01815.77
5.4.260.0020.01915.72
5.4.250.0030.02015.76
5.4.240.0040.01715.75
5.4.230.0080.01215.82
5.4.220.0030.02015.64
5.4.210.0050.01915.74
5.4.200.0070.01815.83
5.4.190.0040.02215.64
5.4.180.0040.02415.66
5.4.170.0070.02315.64
5.4.160.0090.02215.76
5.4.150.0030.02315.82
5.4.140.0040.02414.44
5.4.130.0030.02414.35
5.4.120.0050.02014.35
5.4.110.0020.01914.43
5.4.100.0020.02114.48
5.4.90.0050.01814.43
5.4.80.0050.02014.41
5.4.70.0020.02214.45
5.4.60.0050.01914.34
5.4.50.0050.01814.37
5.4.40.0080.01714.46
5.4.30.0090.01514.38
5.4.20.0050.01814.40
5.4.10.0040.02114.29
5.4.00.0080.01314.08

preferences:
55.65 ms | 404 KiB | 6 Q