3v4l.org

run code in 300+ PHP versions simultaneously
<?php $myvar = 0; if (empty($myvar)) { echo "It's empty."; } if(!isset($myvar)) { echo "It's not set."; }

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)
8.5.00.0070.01421.91
8.4.150.0020.00014.05
8.4.140.0160.00817.56
8.4.130.0140.00617.65
8.4.120.0130.00922.43
8.4.110.0120.00818.63
8.4.100.0150.00518.57
8.4.90.0140.00618.75
8.4.80.0080.00918.79
8.4.70.0110.00917.98
8.4.60.0120.00819.07
8.4.50.0100.01018.44
8.4.40.0080.01119.27
8.4.30.0130.00620.24
8.4.20.0140.00717.58
8.4.10.0030.00619.61
8.3.280.0130.00718.31
8.3.270.0140.00716.34
8.3.260.0120.00716.28
8.3.250.0080.01118.77
8.3.240.0100.01016.84
8.3.230.0080.00216.80
8.3.220.0050.00318.94
8.3.210.0040.00418.62
8.3.200.0080.00116.32
8.3.190.0070.01117.18
8.3.180.0110.00617.29
8.3.170.0110.00720.68
8.3.160.0160.00317.38
8.3.150.0030.01516.98
8.3.140.0090.00616.36
8.3.130.0090.00016.66
8.3.120.0070.01018.59
8.3.110.0090.00016.65
8.3.100.0060.00324.06
8.3.90.0080.00026.77
8.3.80.0060.00316.50
8.3.70.0110.00416.50
8.3.60.0080.01218.15
8.3.50.0100.00723.57
8.3.40.0110.00418.71
8.3.30.0120.00618.57
8.3.20.0080.00020.91
8.3.10.0030.00620.07
8.3.00.0040.00420.95
8.2.290.0110.00820.29
8.2.280.0070.00918.40
8.2.270.0120.00617.24
8.2.260.0030.00616.47
8.2.250.0040.00418.57
8.2.240.0030.00618.93
8.2.230.0000.00820.94
8.2.220.0060.00337.54
8.2.210.0070.01026.77
8.2.200.0090.00016.63
8.2.190.0100.01016.58
8.2.180.0040.01118.05
8.2.170.0070.01022.96
8.2.160.0100.00320.08
8.2.150.0060.00324.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0070.00026.16
8.2.110.0100.00020.35
8.2.100.0090.00317.91
8.2.90.0030.00621.12
8.2.80.0000.00820.52
8.2.70.0070.00317.80
8.2.60.0030.00617.94
8.2.50.0030.00719.39
8.2.40.0040.00421.05
8.2.30.0040.00419.23
8.2.20.0070.00017.93
8.2.10.0070.00019.24
8.2.00.0000.00719.12
8.1.330.0050.00321.92
8.1.320.0090.01017.58
8.1.310.0060.01218.50
8.1.300.0110.00718.13
8.1.290.0060.00330.84
8.1.280.0070.00725.92
8.1.270.0070.00023.99
8.1.260.0040.00426.35
8.1.250.0090.00028.09
8.1.240.0090.00020.66
8.1.230.0070.00422.12
8.1.220.0040.00417.76
8.1.210.0000.00818.77
8.1.200.0070.00317.23
8.1.190.0080.00017.23
8.1.180.0000.00819.02
8.1.170.0060.00318.50
8.1.160.0040.00419.02
8.1.150.0030.00518.89
8.1.140.0050.00517.46
8.1.130.0040.00417.44
8.1.120.0030.00717.38
8.1.110.0040.00417.34
8.1.100.0030.00617.46
8.1.90.0070.00017.46
8.1.80.0040.00417.40
8.1.70.0000.00917.38
8.1.60.0030.00717.62
8.1.50.0040.00417.44
8.1.40.0000.00817.53
8.1.30.0080.00017.66
8.1.20.0000.00817.58
8.1.10.0000.00817.55
8.1.00.0000.00817.47
8.0.300.0000.00720.09
8.0.290.0050.00316.58
8.0.280.0050.00318.36
8.0.270.0050.00316.82
8.0.260.0030.00316.71
8.0.250.0000.00716.97
8.0.240.0000.00816.79
8.0.230.0030.00616.95
8.0.220.0030.00316.88
8.0.210.0000.00716.88
8.0.200.0030.00317.05
8.0.190.0070.00016.93
8.0.180.0040.00416.82
8.0.170.0040.00416.76
8.0.160.0000.00716.81
8.0.150.0000.00716.84
8.0.140.0030.00516.84
8.0.130.0030.00313.34
8.0.120.0030.00516.82
8.0.110.0030.00316.90
8.0.100.0070.00016.91
8.0.90.0030.00616.77
8.0.80.0070.01016.84
8.0.70.0070.00016.76
8.0.60.0000.00716.84
8.0.50.0000.00816.79
8.0.30.0080.00816.93
8.0.20.0090.00916.95
8.0.10.0040.00416.91
8.0.00.0150.00916.70
7.4.330.0050.00015.55
7.4.320.0030.00316.52
7.4.300.0000.00816.63
7.4.290.0040.00716.51
7.4.280.0070.00016.51
7.4.270.0030.00316.59
7.4.260.0060.00013.16
7.4.250.0050.00316.51
7.4.240.0020.00516.42
7.4.230.0070.00016.40
7.4.220.0020.00516.37
7.4.210.0070.01316.46
7.4.200.0070.00016.54
7.4.130.0130.00816.45
7.4.120.0090.00616.38
7.4.110.0120.00616.59
7.4.100.0090.00616.61
7.4.90.0040.01416.52
7.4.80.0070.01119.39
7.4.70.0030.01216.61
7.4.60.0100.00716.41
7.4.50.0090.00316.38
7.4.40.0080.00816.43
7.4.20.0160.00716.47
7.4.10.0110.01116.34
7.4.00.0060.01216.54
7.3.330.0040.00416.14
7.3.320.0020.00213.06
7.3.310.0030.00316.21
7.3.300.0020.00516.16
7.3.290.0070.00916.14
7.3.280.0110.00816.14
7.3.260.0180.00816.45
7.3.240.0090.00716.24
7.3.230.0090.01216.34
7.3.210.0090.00616.12
7.3.200.0080.00816.37
7.3.190.0070.01416.30
7.3.180.0000.01716.50
7.3.170.0110.01216.34
7.3.160.0130.00716.40
7.3.140.0050.01616.28
7.3.130.0170.00516.26
7.3.120.0030.01816.29
7.3.110.0100.01016.23
7.3.100.0090.00916.50
7.3.90.0150.00916.14
7.3.80.0040.01716.30
7.3.70.0130.01216.26
7.3.60.0100.01016.30
7.3.50.0060.01416.41
7.3.40.0000.02016.14
7.3.30.0040.01416.18
7.3.20.0120.00816.23
7.3.10.0160.00316.39
7.3.00.0130.00716.32
7.2.330.0090.01516.23
7.2.320.0090.01216.38
7.2.310.0090.00616.57
7.2.300.0130.00316.37
7.2.290.0080.00816.29
7.2.270.0120.00916.57
7.2.260.0120.01016.23
7.2.250.0030.01616.51
7.2.240.0130.01016.53
7.2.230.0080.01316.38
7.2.220.0050.01216.62
7.2.210.0090.01116.50
7.2.200.0130.00616.53
7.2.190.0130.00916.41
7.2.180.0110.01116.44
7.2.170.0140.00616.41
7.2.160.0160.00316.26
7.2.150.0090.01516.49
7.2.140.0100.01016.50
7.2.130.0160.00616.36
7.2.120.0130.00916.57
7.2.110.0080.01116.43
7.2.100.0090.01016.33
7.2.90.0100.01016.65
7.2.80.0100.00716.46
7.2.70.0140.00716.34
7.2.60.0070.01416.51
7.2.50.0150.00916.46
7.2.40.0130.00616.33
7.2.30.0180.00316.59
7.2.20.0040.01716.34
7.2.10.0080.01216.60
7.2.00.0090.00916.29

preferences:
100.17 ms | 403 KiB | 5 Q