3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (empty($mystring)) { echo 'empty'; } if ($mystring == null) { echo 'null'; // and warning }

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)
8.3.40.0110.00418.64
8.3.30.0080.00618.79
8.3.20.0000.00720.25
8.3.10.0040.00423.52
8.3.00.0080.00019.25
8.2.170.0140.00022.96
8.2.160.0060.00820.27
8.2.150.0000.00724.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00422.24
8.2.110.0000.00920.47
8.2.100.0070.00417.78
8.2.90.0040.00417.75
8.2.80.0000.00818.84
8.2.70.0000.00817.63
8.2.60.0000.00917.63
8.2.50.0000.00817.63
8.2.40.0040.00417.62
8.2.30.0050.00217.97
8.2.20.0000.00817.57
8.2.10.0020.00517.96
8.2.00.0050.00217.72
8.1.270.0030.00623.99
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0080.00417.64
8.1.230.0070.00420.85
8.1.220.0080.00018.58
8.1.210.0020.00518.77
8.1.200.0050.00317.39
8.1.190.0000.00817.23
8.1.180.0040.00418.10
8.1.170.0040.00417.62
8.1.160.0040.00421.96
8.1.150.0070.00418.43
8.1.140.0000.00717.49
8.1.130.0070.00017.63
8.1.120.0080.00017.35
8.1.110.0050.00317.33
8.1.100.0000.00817.36
8.1.90.0000.00717.43
8.1.80.0000.00717.44
8.1.70.0070.00017.33
8.1.60.0060.00917.38
8.1.50.0070.00017.32
8.1.40.0030.00617.41
8.1.30.0040.00417.46
8.1.20.0000.00817.45
8.1.10.0000.00717.43
8.1.00.0020.00517.27
8.0.300.0070.00018.77
8.0.290.0030.00616.75
8.0.280.0070.00018.28
8.0.270.0070.00017.18
8.0.260.0000.00617.10
8.0.250.0000.00716.98
8.0.240.0070.00016.94
8.0.230.0030.00316.95
8.0.220.0070.00016.82
8.0.210.0070.00016.83
8.0.200.0060.00016.93
8.0.190.0000.00716.90
8.0.180.0000.00716.93
8.0.170.0000.00816.79
8.0.160.0030.00516.87
8.0.150.0000.00816.73
8.0.140.0070.00016.85
8.0.130.0030.00313.39
8.0.120.0040.00416.82
8.0.110.0030.00516.74
8.0.100.0030.00516.85
8.0.90.0000.00816.83
8.0.80.0100.00716.90
8.0.70.0000.00816.81
8.0.60.0000.00716.75
8.0.50.0040.00416.75
8.0.30.0070.01117.01
8.0.20.0070.01017.40
8.0.10.0050.00317.02
8.0.00.0110.01016.58
7.4.330.0020.00215.09
7.4.320.0060.00016.37
7.4.300.0060.00016.38
7.4.290.0030.00316.38
7.4.280.0080.00016.32
7.4.270.0070.00016.47
7.4.260.0040.00416.46
7.4.250.0030.00516.40
7.4.240.0030.00416.49
7.4.230.0040.00416.60
7.4.220.0070.01016.54
7.4.210.0040.01116.52
7.4.200.0030.00316.55
7.4.190.0000.00716.57
7.4.160.0130.01016.27
7.4.150.0090.01017.40
7.4.140.0130.00517.86
7.4.130.0110.01016.67
7.4.120.0070.01016.45
7.4.110.0130.00616.45
7.4.100.0070.01016.39
7.4.90.0070.01016.61
7.4.80.0120.00619.39
7.4.70.0110.00716.25
7.4.60.0100.00716.36
7.4.50.0040.00016.53
7.4.40.0060.01116.40
7.4.30.0110.00716.41
7.4.00.0080.00914.88
7.3.330.0000.00713.00
7.3.320.0000.00513.17
7.3.310.0000.00716.14
7.3.300.0060.00016.10
7.3.290.0120.00316.29
7.3.280.0090.00816.28
7.3.270.0040.01317.40
7.3.260.0080.00816.49
7.3.250.0130.00616.33
7.3.240.0140.00316.30
7.3.230.0090.00916.39
7.3.210.0070.01116.35
7.3.200.0110.00919.39
7.3.190.0120.00916.37
7.3.180.0130.01016.43
7.3.170.0060.00916.39
7.3.160.0000.01616.40
7.3.120.0060.00914.71
7.3.110.0030.01514.95
7.3.100.0070.00414.93
7.3.90.0070.00714.90
7.3.80.0070.00714.87
7.3.70.0100.00714.84
7.3.60.0060.00914.68
7.3.50.0130.00314.56
7.3.40.0070.00314.61
7.3.30.0040.01214.78
7.3.20.0000.01416.55
7.3.10.0040.01216.34
7.3.00.0000.01416.25
7.2.330.0160.00316.55
7.2.320.0190.00316.62
7.2.310.0030.01316.55
7.2.300.0100.00716.46
7.2.290.0110.00816.29
7.2.250.0100.01015.18
7.2.240.0130.00615.17
7.2.230.0030.01214.75
7.2.220.0110.00415.04
7.2.210.0030.00615.23
7.2.200.0110.00415.02
7.2.190.0000.01714.67
7.2.180.0000.01415.14
7.2.170.0070.00714.82
7.2.00.0030.01019.13
7.1.330.0070.00715.92
7.1.320.0080.00815.81
7.1.310.0030.00915.68
7.1.300.0120.00315.71
7.1.290.0030.01515.56
7.1.280.0040.01215.59
7.1.270.0030.00615.66
7.1.260.0040.01215.46
7.1.200.0140.00915.42
7.1.100.0070.00718.10
7.1.70.0040.00417.00
7.1.60.0060.00919.46
7.1.50.0080.00816.79
7.1.00.0030.07322.42
7.0.200.0000.00716.58
7.0.140.0100.06722.00
7.0.110.0130.04320.08
7.0.100.0000.08319.99
7.0.90.0100.03719.92
7.0.80.0030.08020.04
7.0.70.0130.07019.93
7.0.60.0030.07720.07
7.0.50.0070.06320.35
7.0.40.0000.09020.06
7.0.30.0070.08020.04
7.0.20.0100.07719.96
7.0.10.0130.07020.05
7.0.00.0100.08020.14
5.6.280.0030.07321.14
5.6.250.0170.07320.58
5.6.240.0100.07720.55
5.6.230.0170.07020.65
5.6.220.0170.07320.68
5.6.210.0100.04720.63
5.6.200.0070.08721.14
5.6.190.0030.07020.96
5.6.180.0200.05021.26
5.6.170.0070.08021.07
5.6.160.0070.08321.02
5.6.150.0130.05321.14
5.6.140.0000.08721.01
5.6.130.0130.07721.06
5.6.120.0130.07721.14
5.6.110.0030.08021.13
5.6.100.0100.07720.91
5.6.90.0100.08321.05
5.6.80.0070.05020.32
5.6.70.0200.06320.48
5.6.60.0170.05320.55
5.6.50.0100.04320.64
5.6.40.0070.08320.33
5.6.30.0030.07720.54
5.6.20.0070.08020.38
5.6.10.0030.08320.56
5.6.00.0070.07320.32
5.5.380.0130.07020.54
5.5.370.0030.08720.35
5.5.360.0100.06720.44
5.5.350.0130.07320.44
5.5.340.0200.07320.90
5.5.330.0070.07720.86
5.5.320.0030.07720.86
5.5.310.0100.05320.91
5.5.300.0170.07320.73
5.5.290.0100.07320.95
5.5.280.0100.07320.89
5.5.270.0100.07320.79
5.5.260.0170.06721.02
5.5.250.0030.06020.75
5.5.240.0130.06720.19
5.5.230.0070.08720.18
5.5.220.0070.08320.17
5.5.210.0100.07320.15
5.5.200.0100.08020.29
5.5.190.0130.07320.24
5.5.180.0100.08020.16
5.5.160.0070.08320.12
5.5.150.0130.07020.04
5.5.140.0130.04020.02
5.5.130.0100.04720.38
5.5.120.0100.07720.08
5.5.110.0030.07720.03
5.5.100.0100.07320.02
5.5.90.0170.06720.09
5.5.80.0000.07020.15
5.5.70.0070.07720.13
5.5.60.0030.08020.02
5.5.50.0000.04320.20
5.5.40.0000.05720.25
5.5.30.0130.06320.20
5.5.20.0100.08020.11
5.5.10.0100.05020.03
5.5.00.0070.06020.09
5.4.450.0100.08319.33
5.4.440.0030.08319.57
5.4.430.0000.08019.35
5.4.420.0130.07319.57
5.4.410.0070.08019.31
5.4.400.0070.07318.93
5.4.390.0100.07019.16
5.4.380.0100.07718.95
5.4.370.0030.07319.08
5.4.360.0200.06319.16
5.4.350.0170.06718.95
5.4.340.0000.08019.04
5.4.320.0070.08019.11
5.4.310.0130.06719.03
5.4.300.0000.07319.09
5.4.290.0130.07018.95
5.4.280.0030.08319.07
5.4.270.0030.06719.07
5.4.260.0100.07719.25
5.4.250.0170.07018.99
5.4.240.0070.07318.97
5.4.230.0170.06718.92
5.4.220.0100.07319.24
5.4.210.0130.06719.02
5.4.200.0100.07319.09
5.4.190.0030.04719.15
5.4.180.0130.06318.94
5.4.170.0030.08019.00
5.4.160.0070.07019.09
5.4.150.0100.07718.98
5.4.140.0100.07316.26
5.4.130.0070.07016.25
5.4.120.0070.07016.46
5.4.110.0070.05016.41
5.4.100.0100.03716.15
5.4.90.0070.05716.50
5.4.80.0070.04016.48
5.4.70.0000.04016.36
5.4.60.0100.03716.36
5.4.50.0000.04716.29
5.4.40.0030.03716.16
5.4.30.0100.03316.51
5.4.20.0070.06316.50
5.4.10.0070.03316.51
5.4.00.0000.04015.89
5.3.290.0070.07314.54
5.3.280.0100.06314.53
5.3.270.0030.06714.62
5.3.260.0130.07314.43
5.3.250.0030.07014.52
5.3.240.0100.06714.61
5.3.230.0030.08314.49
5.3.220.0070.03714.50
5.3.210.0100.06314.56
5.3.200.0070.04314.45
5.3.190.0070.04314.35
5.3.180.0030.03714.43
5.3.170.0070.03314.57
5.3.160.0070.03314.57
5.3.150.0030.03714.48
5.3.140.0000.04314.61
5.3.130.0070.03314.37
5.3.120.0130.02714.33
5.3.110.0070.03314.41
5.3.100.0030.04013.93
5.3.90.0030.06013.86
5.3.80.0030.04314.11
5.3.70.0000.04013.96
5.3.60.0070.03313.84
5.3.50.0030.03713.80
5.3.40.0130.02713.80
5.3.30.0000.05713.79
5.3.20.0070.05313.47
5.3.10.0000.03313.66
5.3.00.0000.04013.58
5.2.170.0070.05011.09
5.2.160.0000.03011.04
5.2.150.0030.02711.13
5.2.140.0070.04311.06
5.2.130.0000.03011.03
5.2.120.0030.05311.04
5.2.110.0030.03011.09
5.2.100.0000.03011.02
5.2.90.0030.02711.04
5.2.80.0000.03011.25
5.2.70.0100.03311.09
5.2.60.0000.03010.94
5.2.50.0070.02310.90
5.2.40.0000.02711.05
5.2.30.0030.04010.92
5.2.20.0000.03711.03
5.2.10.0030.02710.81
5.2.00.0000.03010.70
5.1.60.0070.04310.00
5.1.50.0070.0209.91
5.1.40.0030.0339.98
5.1.30.0000.03710.34
5.1.20.0030.02710.34
5.1.10.0030.02310.21
5.1.00.0030.0309.97
5.0.50.0030.0438.61
5.0.40.0000.0208.36
5.0.30.0000.0308.38
5.0.20.0070.0308.16
5.0.10.0070.0278.14
5.0.00.0030.0238.23
4.4.90.0030.0137.89
4.4.80.0000.0137.89
4.4.70.0000.0177.89
4.4.60.0000.0177.89
4.4.50.0000.0177.89
4.4.40.0000.0437.89
4.4.30.0030.0107.89
4.4.20.0000.0137.89
4.4.10.0000.0177.89
4.4.00.0030.0337.89
4.3.110.0000.0177.89
4.3.100.0030.0137.89
4.3.90.0000.0137.89
4.3.80.0030.0207.89
4.3.70.0000.0137.89
4.3.60.0000.0237.89
4.3.50.0030.0207.89
4.3.40.0000.0237.89
4.3.30.0030.0107.89
4.3.20.0030.0137.89
4.3.10.0030.0137.89
4.3.00.0000.0137.89

preferences:
55.07 ms | 400 KiB | 5 Q