3v4l.org

run code in 300+ PHP versions simultaneously
<?php if(empty($myvar)){ if(isset($myvar)) echo $myvar; }

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)
8.3.40.0090.00618.55
8.3.30.0030.01020.09
8.3.20.0000.00720.05
8.3.10.0030.00522.09
8.3.00.0000.00722.39
8.2.170.0150.00322.96
8.2.160.0110.00320.57
8.2.150.0030.00624.18
8.2.140.0130.00624.66
8.2.130.0100.00726.16
8.2.120.0000.00819.54
8.2.110.0060.00322.31
8.2.100.0040.00717.66
8.2.90.0050.00318.82
8.2.80.0000.00917.97
8.2.70.0000.00817.49
8.2.60.0000.00817.80
8.2.50.0080.00018.10
8.2.40.0050.00318.03
8.2.30.0040.00418.00
8.2.20.0000.00817.39
8.2.10.0040.00417.41
8.2.00.0040.00417.53
8.1.270.0000.00724.66
8.1.260.0040.00426.35
8.1.250.0160.00328.09
8.1.240.0060.00322.34
8.1.230.0000.01117.77
8.1.220.0030.00617.74
8.1.210.0080.00018.77
8.1.200.0070.00417.23
8.1.190.0060.00317.09
8.1.180.0040.00418.10
8.1.170.0000.01218.45
8.1.160.0040.00422.05
8.1.150.0040.00418.41
8.1.140.0000.00717.27
8.1.130.0030.00317.75
8.1.120.0050.00517.32
8.1.110.0030.00317.31
8.1.100.0000.00717.21
8.1.90.0000.00717.30
8.1.80.0040.00417.32
8.1.70.0000.00817.30
8.1.60.0040.00417.48
8.1.50.0040.00317.38
8.1.40.0080.00017.29
8.1.30.0050.00217.47
8.1.20.0050.00217.58
8.1.10.0000.00717.36
8.1.00.0000.00717.29
8.0.300.0000.00818.77
8.0.290.0040.00416.63
8.0.280.0030.00318.26
8.0.270.0070.00017.16
8.0.260.0000.00616.59
8.0.250.0060.00016.79
8.0.240.0030.00616.86
8.0.230.0000.00816.83
8.0.220.0030.00516.64
8.0.210.0030.00316.72
8.0.200.0050.00316.77
8.0.190.0030.00316.81
8.0.180.0030.00316.76
8.0.170.0070.00016.68
8.0.160.0040.00316.75
8.0.150.0000.00716.61
8.0.140.0030.00616.62
8.0.130.0000.00613.11
8.0.120.0000.00916.72
8.0.110.0000.00716.78
8.0.100.0090.00016.64
8.0.90.0040.00416.82
8.0.80.0000.01516.74
8.0.70.0070.00016.80
8.0.60.0040.00416.71
8.0.50.0000.00716.78
8.0.30.0090.00917.05
8.0.20.0090.00917.40
8.0.10.0050.00216.83
8.0.00.0080.00916.53
7.4.330.0030.00315.00
7.4.320.0060.00016.22
7.4.300.0060.00016.29
7.4.290.0030.00316.46
7.4.280.0060.00016.31
7.4.270.0030.00316.29
7.4.260.0050.00316.25
7.4.250.0000.00716.41
7.4.240.0000.00716.36
7.4.230.0030.00316.37
7.4.220.0040.01516.46
7.4.210.0060.00916.41
7.4.200.0030.00316.49
7.4.190.0040.00416.61
7.4.160.0090.01316.38
7.4.150.0100.00717.40
7.4.140.0150.00817.86
7.4.130.0080.01016.49
7.4.120.0080.01216.34
7.4.110.0030.01416.32
7.4.100.0070.01116.23
7.4.90.0110.00616.35
7.4.80.0110.00719.39
7.4.70.0070.01016.38
7.4.60.0060.01016.43
7.4.50.0000.00516.30
7.4.40.0030.01022.77
7.4.30.0130.00716.34
7.4.00.0030.01414.85
7.3.330.0030.00313.05
7.3.320.0050.00012.98
7.3.310.0040.00416.10
7.3.300.0050.00216.20
7.3.290.0080.00616.08
7.3.280.0100.01016.12
7.3.270.0120.00617.40
7.3.260.0190.00816.14
7.3.250.0090.00916.21
7.3.240.0040.01116.22
7.3.230.0060.01716.39
7.3.210.0030.01316.39
7.3.200.0090.01219.39
7.3.190.0100.00716.17
7.3.180.0040.01116.41
7.3.170.0090.00616.27
7.3.160.0060.00916.25
7.3.120.0070.01014.66
7.3.110.0060.00614.80
7.3.100.0080.00414.57
7.3.90.0100.00614.67
7.3.80.0060.00914.80
7.3.70.0060.00614.36
7.3.60.0070.00314.74
7.3.50.0060.00614.48
7.3.40.0070.01314.29
7.3.30.0070.00714.36
7.3.20.0070.00716.27
7.3.10.0120.00616.61
7.3.00.0100.00716.34
7.2.330.0140.00416.44
7.2.320.0090.01216.52
7.2.310.0140.00316.24
7.2.300.0060.01516.53
7.2.290.0060.01216.53
7.2.240.0030.01314.69
7.2.230.0000.01314.54
7.2.220.0000.01414.84
7.2.210.0080.00814.66
7.2.200.0030.01414.93
7.2.190.0060.01214.99
7.2.180.0100.01014.47
7.2.170.0090.00614.94
7.2.160.0070.00714.85
7.2.150.0100.00616.45
7.2.140.0100.00316.52
7.2.130.0030.01016.70
7.2.120.0000.01516.52
7.2.110.0070.01116.42
7.2.100.0090.00616.72
7.2.90.0070.00716.63
7.2.80.0100.00716.69
7.2.70.0030.01716.74
7.2.60.0040.00916.72
7.2.50.0090.00316.71
7.2.40.0060.01016.77
7.2.30.0060.01016.80
7.2.20.0060.00916.68
7.2.10.0040.01516.80
7.2.00.0030.00616.54
7.1.330.0070.00715.37
7.1.320.0070.00715.83
7.1.310.0090.00315.54
7.1.300.0080.00615.55
7.1.290.0100.00515.47
7.1.280.0090.00615.61
7.1.270.0060.00915.76
7.1.260.0030.01315.79
7.1.250.0110.00415.58
7.1.200.0060.00615.73
7.1.70.0100.00316.64
7.1.60.0180.00419.29
7.1.50.0000.02216.54
7.1.00.0100.07022.54
7.0.200.0100.00714.61
7.0.140.0000.07722.04
7.0.60.0070.07719.91
7.0.50.0070.08717.90
7.0.40.0100.08020.20
7.0.30.0270.05720.18
7.0.20.0230.03720.12
7.0.10.0270.06020.09
7.0.00.0100.08320.01
5.6.280.0000.07721.06
5.6.210.0070.08320.52
5.6.200.0070.08018.07
5.6.190.0130.05020.66
5.6.180.0270.07720.49
5.6.170.0400.07320.45
5.6.160.0130.04020.37
5.6.150.0030.04018.11
5.6.140.0070.05318.16
5.6.130.0000.04318.21
5.6.120.0100.04721.14
5.6.110.0070.04321.00
5.6.100.0070.07321.02
5.6.90.0070.07721.09
5.6.80.0000.08720.36
5.6.70.0230.07020.37
5.5.350.0130.08020.43
5.5.340.0130.07317.95
5.5.330.0030.04320.21
5.5.320.0100.04720.24
5.5.310.0430.06720.30
5.5.300.0100.07317.98
5.5.290.0030.09017.87
5.5.280.0070.08320.67
5.5.270.0170.07020.72
5.5.260.0100.08020.78
5.5.250.0130.07720.63
5.5.240.0070.06720.14
5.4.450.0370.06319.38
5.4.440.0430.03319.35
5.4.430.0400.03719.09
5.4.420.0300.04319.20
5.4.410.0370.03719.30
5.4.400.0430.03019.20
5.4.390.0400.03319.07
5.4.380.0370.03719.04
5.4.370.0430.03718.77
5.4.360.0330.04019.02
5.4.350.0300.04719.11
5.4.340.0330.04019.02
5.4.320.0600.06018.77
5.4.310.0430.03319.20
5.4.300.0470.04719.07
5.4.290.0470.03319.07
5.4.280.0370.04319.04
5.4.270.0370.06719.14
5.4.260.0330.05019.05
5.4.250.0470.05318.77
5.4.240.0430.03719.18
5.4.230.0470.03319.19
5.4.220.0600.04019.18
5.4.210.0430.04019.04
5.4.200.0500.04019.04
5.4.190.0530.06718.75
5.4.180.0570.05319.14
5.4.170.0330.04719.18
5.4.160.0500.04319.08
5.4.150.0500.05318.85
5.4.140.0400.04316.27
5.4.130.0430.04316.16
5.4.120.0470.04016.31
5.4.110.0470.04016.38
5.4.100.0630.06016.50
5.4.90.0500.03716.30
5.4.80.0400.03716.33
5.4.70.0670.06016.33
5.4.60.0570.04316.33
5.4.50.0530.04716.40
5.4.40.0630.05016.37
5.4.30.0430.03716.32
5.4.20.0600.05716.30
5.4.10.0500.03316.34
5.4.00.0470.04015.85
5.3.290.0430.04014.47
5.3.280.0400.07314.42
5.3.270.0430.04014.55
5.3.260.0670.06314.44
5.3.250.0430.04014.63
5.3.240.0500.03714.51
5.3.230.0500.03714.44
5.3.220.0600.05714.40
5.3.210.0530.04714.61
5.3.200.0430.05014.51
5.3.190.0530.04314.41
5.3.180.0500.03014.40
5.3.170.0400.04714.60
5.3.160.0470.04014.41
5.3.150.0470.05014.51
5.3.140.0600.06314.41
5.3.130.0470.03714.38
5.3.120.0430.03714.38
5.3.110.0570.07314.52
5.3.100.0570.06013.98
5.3.90.0430.04313.97
5.3.80.0470.03313.96
5.3.70.0430.03713.95
5.3.60.0530.05313.95
5.3.50.0630.06013.83
5.3.40.0600.06013.85
5.3.30.0470.04013.81
5.3.20.0630.05013.77
5.3.10.0630.05713.63
5.3.00.0600.05313.58
5.2.170.0570.04711.15
5.2.160.0400.03011.00
5.2.150.0500.04310.98
5.2.140.0470.03310.97
5.2.130.0400.05711.12
5.2.120.0400.03311.01
5.2.110.0470.04311.14
5.2.100.0430.05311.25
5.2.90.0370.03710.95
5.2.80.0270.03711.14
5.2.70.0330.03710.95
5.2.60.0300.02710.88
5.2.50.0370.02710.95
5.2.40.0300.02310.83
5.2.30.0230.03011.05
5.2.20.0200.03710.80
5.2.10.0330.02010.80
5.2.00.0370.02310.59
5.1.60.0230.0239.92
5.1.50.0300.0279.90
5.1.40.0230.0279.84
5.1.30.0330.04310.29
5.1.20.0230.02710.21
5.1.10.0230.02310.22
5.1.00.0230.0239.93
5.0.50.0100.0239.32
5.0.40.0130.0239.32
5.0.30.0230.0509.32
5.0.20.0170.0239.32
5.0.10.0230.0409.32
5.0.00.0130.0439.32
4.4.90.0130.0139.32
4.4.80.0130.0139.32
4.4.70.0100.0179.32
4.4.60.0100.0179.32
4.4.50.0130.0139.32
4.4.40.0070.0309.32
4.4.30.0100.0179.32
4.4.20.0100.0179.32
4.4.10.0200.0309.32
4.4.00.0170.0239.32
4.3.110.0130.0139.32
4.3.100.0200.0209.32
4.3.90.0170.0139.32
4.3.80.0230.0339.32
4.3.70.0170.0209.32
4.3.60.0130.0239.32
4.3.50.0270.0379.32
4.3.40.0230.0439.32
4.3.30.0100.0309.32
4.3.20.0070.0379.32
4.3.10.0100.0339.32
4.3.00.0100.0209.32

preferences:
41.65 ms | 400 KiB | 5 Q