3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(isset($var)); var_dump(empty($var)); $var = null; var_dump(isset($var)); var_dump(empty($var)); $var = false; var_dump(isset($var)); var_dump(empty($var));

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)
8.3.60.0000.01516.50
8.3.50.0260.00316.35
8.3.40.0030.01118.75
8.3.30.0110.00418.51
8.3.20.0040.00418.49
8.3.10.0080.00020.39
8.3.00.0040.00419.01
8.2.180.0130.01016.63
8.2.170.0070.01022.96
8.2.160.0140.00020.86
8.2.150.0080.00024.18
8.2.140.0060.00324.66
8.2.130.0070.00026.16
8.2.120.0070.00317.63
8.2.110.0040.00721.05
8.2.100.0120.00017.59
8.2.90.0030.00720.80
8.2.80.0090.00017.90
8.2.70.0040.00417.38
8.2.60.0000.00818.04
8.2.50.0000.00918.07
8.2.40.0060.00318.16
8.2.30.0090.00018.10
8.2.20.0000.00717.40
8.2.10.0040.00417.59
8.2.00.0050.00517.55
8.1.280.0040.01225.92
8.1.270.0050.00324.66
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0090.00022.38
8.1.230.0080.00320.88
8.1.220.0000.00917.74
8.1.210.0080.00018.96
8.1.200.0070.00317.22
8.1.190.0080.00017.41
8.1.180.0040.00418.10
8.1.170.0000.00818.90
8.1.160.0040.00418.88
8.1.150.0040.00418.63
8.1.140.0040.00417.42
8.1.130.0070.00017.86
8.1.120.0040.00417.39
8.1.110.0070.00017.36
8.1.100.0050.00317.37
8.1.90.0050.00517.28
8.1.80.0050.00317.42
8.1.70.0070.00017.38
8.1.60.0040.00417.50
8.1.50.0040.00417.38
8.1.40.0000.00817.41
8.1.30.0040.00417.62
8.1.20.0080.00017.47
8.1.10.0000.00817.41
8.1.00.0000.00717.25
8.0.300.0000.00819.98
8.0.290.0040.00416.63
8.0.280.0000.00718.40
8.0.270.0070.00017.23
8.0.260.0070.00016.73
8.0.250.0070.00016.91
8.0.240.0000.00716.77
8.0.230.0040.00416.77
8.0.220.0030.00316.83
8.0.210.0030.00316.69
8.0.200.0000.00716.79
8.0.190.0030.00316.86
8.0.180.0070.00016.88
8.0.170.0090.00016.83
8.0.160.0030.00516.80
8.0.150.0080.00016.75
8.0.140.0030.00616.67
8.0.130.0060.00013.26
8.0.120.0050.00316.78
8.0.110.0000.00716.70
8.0.100.0020.00616.76
8.0.90.0000.00816.88
8.0.80.0080.00816.86
8.0.70.0050.00316.66
8.0.60.0000.00816.87
8.0.50.0040.00416.69
8.0.30.0130.00817.13
8.0.20.0110.01116.98
8.0.10.0050.00216.99
8.0.00.0050.01716.61
7.4.330.0000.00512.86
7.4.320.0030.00316.54
7.4.300.0030.00316.53
7.4.290.0030.00316.40
7.4.280.0000.00816.43
7.4.270.0020.00516.42
7.4.260.0030.00313.18
7.4.250.0000.00916.53
7.4.240.0070.00016.44
7.4.230.0040.00416.60
7.4.220.0110.00616.42
7.4.210.0080.00816.43
7.4.200.0000.00716.46
7.4.190.0000.00816.57
7.4.160.0120.00316.38
7.4.150.0090.01516.12
7.4.140.0100.00716.25
7.4.130.0100.00716.35
7.4.120.0070.00916.33
7.4.110.0090.00816.52
7.4.100.0090.00916.51
7.4.90.0100.01016.68
7.4.80.0140.00619.39
7.4.70.0180.00016.32
7.4.60.0090.00816.34
7.4.50.0000.00916.25
7.4.40.0070.00716.29
7.4.30.0120.00916.41
7.4.00.0000.01514.96
7.3.330.0000.00612.87
7.3.320.0000.00512.97
7.3.310.0040.00416.20
7.3.300.0000.00716.04
7.3.290.0070.01016.08
7.3.280.0100.00516.15
7.3.270.0140.00816.16
7.3.260.0060.01216.12
7.3.250.0050.01416.10
7.3.240.0180.00416.07
7.3.230.0190.00016.14
7.3.210.0090.00616.38
7.3.200.0090.00616.19
7.3.190.0040.01216.14
7.3.180.0000.01516.09
7.3.170.0120.00416.37
7.3.160.0100.01016.24
7.3.120.0030.01014.55
7.3.10.0210.01015.91
7.3.00.0230.00316.20
7.2.330.0030.01716.38
7.2.320.0150.00916.46
7.2.310.0030.01816.26
7.2.300.0060.01116.24
7.2.290.0110.01216.36
7.2.130.0200.00016.93
7.2.120.0170.00316.26
7.2.110.0160.00716.30
7.2.100.0170.00316.47
7.2.90.0070.01016.32
7.2.80.0070.00716.43
7.2.70.0140.00316.71
7.2.60.0110.00716.45
7.2.50.0060.00916.52
7.2.40.0070.01016.50
7.2.30.0130.00316.70
7.2.20.0040.00816.59
7.2.10.0100.00616.39
7.2.00.0080.00917.91
7.1.250.0200.00314.96
7.1.100.0060.00617.96
7.1.70.0070.00717.09
7.1.60.0090.01519.40
7.1.50.0140.00716.79
7.1.00.0070.07322.45
7.0.200.0170.00314.65
7.0.140.0100.07021.92
7.0.120.0030.07321.96
7.0.60.0000.07719.96
7.0.50.0070.04717.79
7.0.40.0170.07720.27
7.0.30.0200.04020.04
7.0.20.0300.05720.16
7.0.10.0170.06720.21
7.0.00.0170.08320.04
5.6.280.0100.06721.07
5.6.210.0030.07320.54
5.6.200.0130.06318.18
5.6.190.0100.08320.38
5.6.180.0200.08020.57
5.6.170.0230.07720.38
5.6.160.0130.07320.50
5.6.150.0070.08018.17
5.6.140.0130.03018.21
5.6.130.0030.04018.18
5.6.120.0070.08021.01
5.6.110.0130.07720.95
5.6.100.0100.04320.88
5.6.90.0070.08720.93
5.6.80.0000.06320.37
5.6.70.2830.04720.41
5.5.350.0300.06020.43
5.5.340.0070.03717.89
5.5.330.0130.08020.46
5.5.320.0270.03720.21
5.5.310.0330.07020.27
5.5.300.0030.08017.98
5.5.290.0000.05317.93
5.5.280.0130.07720.86
5.5.270.0100.08020.71
5.5.260.0130.07720.72
5.5.250.0000.05720.68
5.5.240.0000.05320.05
5.4.450.0030.04019.41
5.4.440.0000.04319.24
5.4.430.0130.04319.23
5.4.420.0070.06019.25
5.4.410.0130.05719.28
5.4.400.0030.04019.12
5.4.390.0070.06719.14
5.4.380.0070.08018.81
5.4.370.0100.07319.16
5.4.360.0030.07318.79
5.4.350.0100.06718.88
5.4.340.0130.07319.07
5.4.320.0030.04718.93
5.4.310.0070.03719.17
5.4.300.0100.06719.11
5.4.290.0070.03719.17
5.4.280.0130.03319.07
5.4.270.0030.05319.08
5.4.260.0030.06319.09
5.4.250.0130.06719.02
5.4.240.0100.06718.78
5.4.230.0100.04719.07
5.4.220.0070.03718.90
5.4.210.0070.05018.77
5.4.200.0000.05719.17
5.4.190.0100.04318.91
5.4.180.0030.07319.11
5.4.170.0070.03719.10
5.4.160.0070.07319.09
5.4.150.0070.07318.77
5.4.140.0070.05316.39
5.4.130.0070.03316.21
5.4.120.0130.05316.21
5.4.110.0030.07316.24
5.4.100.0100.05316.27
5.4.90.0100.07716.32
5.4.80.0130.06716.21
5.4.70.0170.05316.30
5.4.60.0030.07316.23
5.4.50.0100.06016.57
5.4.40.0130.04716.12
5.4.30.0000.06316.29
5.4.20.0070.07316.24
5.4.10.0100.04316.23
5.4.00.0070.03315.70
5.3.290.0030.04014.59
5.3.280.0100.06714.52
5.3.270.0130.03714.58
5.3.260.0130.07714.53
5.3.250.0000.05714.55
5.3.240.0070.03314.55
5.3.230.0030.05314.53
5.3.220.0070.04014.49
5.3.210.0030.04014.46
5.3.200.0000.04014.58
5.3.190.0070.08014.46
5.3.180.0070.08014.38
5.3.170.0070.07314.38
5.3.160.0030.07714.45
5.3.150.0130.05714.48
5.3.140.0070.07714.52
5.3.130.0230.03014.52
5.3.120.0070.07314.48
5.3.110.0070.05714.47
5.3.100.0000.04313.96
5.3.90.0100.03713.97
5.3.80.0030.08013.84
5.3.70.0030.05013.99
5.3.60.0100.06313.98
5.3.50.0030.05714.04
5.3.40.0070.04713.78
5.3.30.0070.07013.72
5.3.20.0130.04713.67
5.3.10.0070.04013.59
5.3.00.0170.06713.72
5.2.170.0030.04311.13
5.2.160.0030.04011.15
5.2.150.0030.04011.04
5.2.140.0070.06011.15
5.2.130.0070.02710.95
5.2.120.0030.05710.99
5.2.110.0030.03010.98
5.2.100.0130.05711.07
5.2.90.0070.04011.03
5.2.80.0000.06010.99
5.2.70.0070.06011.17
5.2.60.0000.06311.02
5.2.50.0030.05310.95
5.2.40.0070.06011.14
5.2.30.0000.04710.94
5.2.20.0100.04010.96
5.2.10.0070.04010.86
5.2.00.0100.05710.80
5.1.60.0070.0509.94
5.1.50.0000.0579.94
5.1.40.0000.0409.95
5.1.30.0000.03310.34
5.1.20.0030.03310.23
5.1.10.0100.03010.04
5.1.00.0030.05710.08
5.0.50.0030.0278.53
5.0.40.0000.0308.39
5.0.30.0000.0678.20
5.0.20.0030.0378.18
5.0.10.0000.0338.20
5.0.00.0070.0338.17
4.4.90.0030.0307.62
4.4.80.0000.0377.62
4.4.70.0030.0307.62
4.4.60.0000.0377.62
4.4.50.0030.0337.62
4.4.40.0030.0337.62
4.4.30.0030.0237.62
4.4.20.0070.0137.62
4.4.10.0000.0337.62
4.4.00.0000.0437.62
4.3.110.0070.0337.62
4.3.100.0030.0337.62
4.3.90.0030.0237.62
4.3.80.0030.0507.62
4.3.70.0000.0207.62
4.3.60.0100.0277.62
4.3.50.0000.0407.62
4.3.40.0000.0407.62
4.3.30.0000.0307.62
4.3.20.0000.0407.62
4.3.10.0000.0177.62
4.3.00.0030.0237.62

preferences:
43.86 ms | 401 KiB | 5 Q