3v4l.org

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

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)
8.3.40.0110.00418.54
8.3.30.0120.00320.17
8.3.20.0040.00420.21
8.3.10.0000.00822.06
8.3.00.0080.00022.58
8.2.170.0140.00022.96
8.2.160.0070.00722.12
8.2.150.0000.00824.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0080.00020.66
8.2.110.0110.00020.47
8.2.100.0110.00017.78
8.2.90.0000.00919.09
8.2.80.0050.00219.25
8.2.70.0050.00317.50
8.2.60.0080.00017.93
8.2.50.0040.00418.07
8.2.40.0080.00019.85
8.2.30.0080.00019.42
8.2.20.0030.00617.50
8.2.10.0030.00617.64
8.2.00.0000.00717.64
8.1.270.0040.00423.99
8.1.260.0060.00626.35
8.1.250.0040.00428.09
8.1.240.0090.00023.97
8.1.230.0090.00318.89
8.1.220.0050.00317.74
8.1.210.0080.00018.77
8.1.200.0080.00017.35
8.1.190.0000.00717.40
8.1.180.0040.00419.01
8.1.170.0000.00818.50
8.1.160.0050.00318.77
8.1.150.0060.00618.64
8.1.140.0040.00417.36
8.1.130.0030.00317.69
8.1.120.0030.00317.29
8.1.110.0070.00017.29
8.1.100.0070.00017.44
8.1.90.0070.00017.42
8.1.80.0050.00217.39
8.1.70.0030.00517.39
8.1.60.0030.00517.49
8.1.50.0070.00017.41
8.1.40.0000.00717.50
8.1.30.0000.00717.55
8.1.20.0000.00817.48
8.1.10.0040.00417.41
8.1.00.0000.01017.36
8.0.300.0040.00418.77
8.0.290.0000.00817.16
8.0.280.0000.00718.26
8.0.270.0000.00817.19
8.0.260.0000.00616.66
8.0.250.0000.00716.89
8.0.240.0040.00416.85
8.0.230.0000.00716.88
8.0.220.0030.00316.73
8.0.210.0000.00716.86
8.0.200.0000.00716.76
8.0.190.0080.00016.86
8.0.180.0030.00316.73
8.0.170.0040.00416.81
8.0.160.0030.00316.85
8.0.150.0070.00016.71
8.0.140.0080.00016.74
8.0.130.0050.00013.22
8.0.120.0000.00816.79
8.0.110.0070.00016.77
8.0.100.0070.00016.59
8.0.90.0030.00316.62
8.0.80.0000.01516.73
8.0.70.0000.00816.82
8.0.60.0040.00416.83
8.0.50.0040.00416.88
8.0.30.0090.01116.91
8.0.20.0120.00717.40
8.0.10.0040.00417.00
8.0.00.0120.01416.78
7.4.330.0000.00515.00
7.4.320.0060.00016.52
7.4.300.0040.00416.57
7.4.290.0000.00816.53
7.4.280.0000.00816.41
7.4.270.0070.00016.45
7.4.260.0000.00513.25
7.4.250.0040.00416.41
7.4.240.0010.00616.50
7.4.230.0030.00316.55
7.4.220.0100.00716.54
7.4.210.0050.01216.58
7.4.200.0000.00816.55
7.4.190.0000.00716.39
7.4.160.0080.00816.27
7.4.150.0120.00617.40
7.4.140.0100.01217.86
7.4.130.0100.00816.48
7.4.120.0080.00916.42
7.4.110.0090.00916.21
7.4.100.0110.00716.34
7.4.90.0060.01016.51
7.4.80.0140.00419.39
7.4.70.0120.00316.38
7.4.60.0080.00816.31
7.4.50.0000.00816.43
7.4.40.0060.00822.77
7.4.30.0030.01816.35
7.4.00.0040.01115.03
7.3.330.0050.00013.03
7.3.320.0050.00012.96
7.3.310.0000.00716.22
7.3.300.0030.00416.14
7.3.290.0030.01016.16
7.3.280.0120.00416.12
7.3.270.0100.00717.40
7.3.260.0060.01116.24
7.3.250.0080.01016.22
7.3.240.0130.01016.51
7.3.230.0090.00616.39
7.3.210.0090.00916.34
7.3.200.0100.01019.39
7.3.190.0110.00616.37
7.3.180.0070.01116.29
7.3.170.0100.00516.33
7.3.160.0090.00616.08
7.3.120.0070.01014.33
7.3.110.0070.01114.29
7.3.100.0040.00814.63
7.3.90.0030.01014.31
7.3.80.0090.00614.58
7.3.70.0030.01314.55
7.3.60.0030.01314.50
7.3.50.0070.00714.52
7.3.40.0060.00914.59
7.3.30.0070.00714.49
7.3.20.0060.00616.55
7.3.10.0060.00816.26
7.3.00.0080.00616.46
7.2.330.0080.01216.22
7.2.320.0100.00616.59
7.2.310.0090.01316.66
7.2.300.0130.00316.64
7.2.290.0120.00416.68
7.2.240.0070.01014.86
7.2.230.0120.00614.92
7.2.220.0030.01614.93
7.2.210.0030.01014.95
7.2.200.0130.00714.59
7.2.190.0090.00414.75
7.2.180.0040.00714.68
7.2.170.0030.01214.86
7.2.160.0100.00614.98
7.2.150.0070.00716.71
7.2.140.0060.00916.73
7.2.130.0090.00516.84
7.2.120.0030.00916.54
7.2.110.0030.01416.65
7.2.100.0090.00516.70
7.2.90.0090.00616.79
7.2.80.0040.00916.54
7.2.70.0020.01116.89
7.2.60.0080.00616.57
7.2.50.0050.01016.72
7.2.40.0060.00916.73
7.2.30.0050.00716.85
7.2.20.0020.01016.75
7.2.10.0080.00316.87
7.2.00.0050.00817.49
7.1.330.0090.00715.61
7.1.320.0040.01415.86
7.1.310.0100.00615.51
7.1.300.0060.00615.55
7.1.290.0030.01015.39
7.1.280.0070.01115.39
7.1.270.0070.00415.62
7.1.260.0090.00615.77
7.1.250.0020.01215.85
7.1.100.0000.01517.80
7.1.70.0030.00616.86
7.1.60.0140.01119.32
7.1.50.0230.01034.43
7.1.00.0000.06022.37
7.0.200.0090.00016.82
7.0.140.0100.06722.08
7.0.70.0030.05721.75
7.0.60.0000.08721.72
7.0.50.0030.04322.05
7.0.40.0070.08720.05
7.0.30.0070.08020.08
7.0.20.0100.06020.08
7.0.10.0000.09020.12
7.0.00.0000.04320.07
5.6.280.0070.07020.77
5.6.220.0030.08320.55
5.6.210.0130.05020.64
5.6.200.0070.08320.96
5.6.190.0070.08021.02
5.6.180.0130.06320.93
5.6.170.0030.05321.04
5.6.160.0130.07720.91
5.6.150.0130.08020.96
5.6.140.0030.08321.11
5.6.130.0070.05321.03
5.6.120.0170.06720.92
5.6.110.0100.08021.04
5.6.100.0000.08720.92
5.6.90.0130.08021.02
5.6.80.0030.04020.34
5.6.70.0030.08720.44
5.6.60.0030.08720.44
5.6.50.0030.04020.51
5.6.40.0030.08720.45
5.6.30.0000.05720.41
5.6.20.0070.07320.27
5.6.10.0000.07720.45
5.6.00.0130.08020.38
5.5.360.0070.08020.40
5.5.350.0070.08720.42
5.5.340.0070.08020.80
5.5.330.0070.08020.82
5.5.320.0030.08720.90
5.5.310.0200.06720.75
5.5.300.0070.07720.82
5.5.290.0030.08020.63
5.5.280.0070.08320.91
5.5.270.0100.05320.62
5.5.260.0070.08020.61
5.5.250.0000.09020.44
5.5.240.0030.05720.26
5.5.230.0030.08320.20
5.5.220.0130.05720.28
5.5.210.0030.07020.25
5.5.200.0000.08020.22
5.5.190.0100.06720.09
5.5.180.0070.08320.20
5.5.160.0100.08020.26
5.5.150.0070.07720.09
5.5.140.0100.07320.14
5.5.130.0030.08320.23
5.5.120.0070.08320.25
5.5.110.0000.05720.13
5.5.100.0030.08020.06
5.5.90.0100.07320.10
5.5.80.0070.08020.11
5.5.70.0030.05320.14
5.5.60.0000.08720.04
5.5.50.0030.05319.92
5.5.40.0070.08019.96
5.5.30.0100.07720.10
5.5.20.0000.08320.06
5.5.10.0030.08020.03
5.5.00.0070.05720.11
5.4.450.0100.09719.23
5.4.440.0030.07719.37
5.4.430.0070.07019.46
5.4.420.0030.05319.41
5.4.410.0030.06319.14
5.4.400.0100.04319.04
5.4.390.0100.07319.12
5.4.380.0070.05018.81
5.4.370.0070.04719.14
5.4.360.0030.07019.06
5.4.350.0100.06719.14
5.4.340.0070.05319.10
5.4.320.0100.07719.11
5.4.310.0030.05319.12
5.4.300.0000.08319.05
5.4.290.0000.07719.02
5.4.280.0030.08018.81
5.4.270.0170.05019.12
5.4.260.0030.04718.80
5.4.250.0000.08019.03
5.4.240.0070.05319.22
5.4.230.0070.06018.91
5.4.220.0030.08018.80
5.4.210.0100.07319.11
5.4.200.0030.06719.04
5.4.190.0000.06318.93
5.4.180.0070.07719.11
5.4.170.0000.08019.02
5.4.160.0030.08319.05
5.4.150.0000.07718.92
5.4.140.0130.07016.07
5.4.130.0000.06316.27
5.4.120.0030.06316.33
5.4.110.0030.08016.41
5.4.100.0030.06016.20
5.4.90.0030.07316.34
5.4.80.0000.04016.29
5.4.70.0070.05316.32
5.4.60.0000.07316.21
5.4.50.0030.06316.21
5.4.40.0000.08016.38
5.4.30.0000.07716.31
5.4.20.0000.05716.37
5.4.10.0100.07316.32
5.4.00.0030.06715.71
5.3.290.0030.06314.63
5.3.280.0000.08314.45
5.3.270.0030.04714.51
5.3.260.0030.08314.51
5.3.250.0030.06714.51
5.3.240.0070.07714.59
5.3.230.0100.07714.54
5.3.220.0030.07014.52
5.3.210.0000.05014.57
5.3.200.0070.06714.52
5.3.190.0000.07314.57
5.3.180.0030.05014.57
5.3.170.0070.07314.46
5.3.160.0030.06314.52
5.3.150.0030.07714.39
5.3.140.0030.06314.51
5.3.130.0070.05314.53
5.3.120.0070.07314.40
5.3.110.0100.03314.55
5.3.100.0070.04713.87
5.3.90.0070.07313.86
5.3.80.0030.04313.77
5.3.70.0070.03313.95
5.3.60.0030.04713.91
5.3.50.0030.05313.80
5.3.40.0030.05713.90
5.3.30.0030.03713.89
5.3.20.0000.05713.54
5.3.10.0000.07313.65
5.3.00.0000.05713.58
5.2.170.0030.06012.37
5.2.160.0100.05712.37
5.2.150.0030.06012.37
5.2.140.0070.05712.37
5.2.130.0000.04012.37
5.2.120.0030.06012.37
5.2.110.0030.06712.37
5.2.100.0000.06312.37
5.2.90.0070.05712.37
5.2.80.0000.04012.37
5.2.70.0030.06012.37
5.2.60.0030.05312.37
5.2.50.0030.06012.37
5.2.40.0000.04312.37
5.2.30.0070.06312.37
5.2.20.0030.05712.37
5.2.10.0070.05012.37
5.2.00.0030.06312.37
5.1.60.0030.05012.37
5.1.50.0070.05012.37
5.1.40.0070.04312.37
5.1.30.0030.06012.37
5.1.20.0070.04712.37
5.1.10.0030.04312.37
5.1.00.0000.05312.37
5.0.50.0000.05012.37
5.0.40.0000.03712.37
5.0.30.0070.06312.37
5.0.20.0100.03312.37
5.0.10.0030.04012.37
5.0.00.0100.06012.37
4.4.90.0000.03012.37
4.4.80.0000.02312.37
4.4.70.0030.03312.37
4.4.60.0000.03712.37
4.4.50.0030.02712.37
4.4.40.0030.05312.37
4.4.30.0030.03312.37
4.4.20.0030.02012.37
4.4.10.0030.02312.37
4.4.00.0030.05312.37
4.3.110.0000.03312.37
4.3.100.0000.03712.37
4.3.90.0000.03312.37
4.3.80.0000.05012.37
4.3.70.0000.03712.37
4.3.60.0030.02312.37
4.3.50.0000.02312.37
4.3.40.0000.05312.37
4.3.30.0030.01712.37
4.3.20.0030.03312.37
4.3.10.0000.02012.37
4.3.00.0070.02712.37

preferences:
35.36 ms | 400 KiB | 5 Q