3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = String ("a" + "string"); echo '$a = ' . $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)
8.3.70.0150.00018.50
8.3.60.0160.00018.55
8.3.50.0100.01221.90
8.3.40.0070.01018.67
8.3.30.0140.00019.03
8.3.20.0140.00020.16
8.3.10.0060.01221.90
8.3.00.0000.00817.68
8.2.180.0190.00316.50
8.2.170.0080.00622.96
8.2.160.0130.00320.53
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0100.00326.16
8.2.120.0030.00521.10
8.2.110.0030.00720.52
8.2.100.0030.00917.72
8.2.90.0000.00819.07
8.2.80.0080.00017.97
8.2.70.0030.00517.50
8.2.60.0040.00417.93
8.2.50.0000.00818.07
8.2.40.0000.00819.74
8.2.30.0060.00317.91
8.2.20.0040.00417.67
8.2.10.0030.00517.92
8.2.00.0080.00017.57
8.1.280.0100.00725.92
8.1.270.0050.00323.92
8.1.260.0000.00726.35
8.1.250.0110.00428.09
8.1.240.0060.00322.47
8.1.230.0080.00420.96
8.1.220.0090.00017.74
8.1.210.0040.00418.77
8.1.200.0040.00717.23
8.1.190.0040.00417.00
8.1.180.0090.00018.10
8.1.170.0040.00418.34
8.1.160.0000.00821.86
8.1.150.0050.00218.68
8.1.140.0040.00417.36
8.1.130.0030.00317.82
8.1.120.0040.00417.31
8.1.110.0000.00817.34
8.1.100.0070.00017.32
8.1.90.0000.00717.25
8.1.80.0040.00417.20
8.1.70.0050.00317.21
8.1.60.0050.00317.46
8.1.50.0040.00417.41
8.1.40.0000.00817.47
8.1.30.0040.00417.51
8.1.20.0040.00417.55
8.1.10.0000.00717.39
8.1.00.0050.00317.45
8.0.300.0070.00018.77
8.0.290.0000.00716.63
8.0.280.0000.00718.38
8.0.270.0030.00317.24
8.0.260.0000.00817.20
8.0.250.0070.00017.00
8.0.240.0030.00316.83
8.0.230.0040.00416.84
8.0.220.0000.00716.79
8.0.210.0000.00716.89
8.0.200.0070.00016.96
8.0.190.0040.00416.93
8.0.180.0030.00516.95
8.0.170.0000.00816.80
8.0.160.0030.00316.80
8.0.150.0000.00716.72
8.0.140.0040.00416.86
8.0.130.0030.00313.31
8.0.120.0040.00416.88
8.0.110.0050.00216.89
8.0.100.0040.00417.01
8.0.90.0070.00016.93
8.0.80.0040.01116.88
8.0.70.0040.00416.91
8.0.60.0040.00416.72
8.0.50.0000.00816.72
8.0.30.0060.01416.81
8.0.20.0060.01317.40
8.0.10.0040.00417.04
8.0.00.0090.01016.55
7.4.330.0020.00215.00
7.4.320.0060.00016.38
7.4.300.0030.00316.57
7.4.290.0030.00616.36
7.4.280.0100.00016.38
7.4.270.0000.00716.44
7.4.260.0060.00316.38
7.4.250.0040.00416.44
7.4.240.0030.00316.45
7.4.230.0050.00316.43
7.4.220.0070.01116.47
7.4.210.0100.01016.57
7.4.200.0000.00716.65
7.4.160.0070.01016.37
7.4.150.0090.00917.40
7.4.140.0100.00917.86
7.4.130.0150.00516.45
7.4.120.0110.00516.56
7.4.110.0100.00716.32
7.4.100.0090.00916.53
7.4.90.0030.01716.43
7.4.80.0030.01319.39
7.4.70.0060.01216.44
7.4.60.0100.01116.55
7.4.50.0000.00416.63
7.4.40.0110.00616.30
7.4.30.0050.01116.57
7.4.00.0120.00615.04
7.3.330.0080.00013.15
7.3.320.0030.00313.18
7.3.310.0070.00016.23
7.3.300.0030.00316.30
7.3.290.0060.00916.25
7.3.280.0070.00916.28
7.3.270.0050.01417.40
7.3.260.0090.00816.26
7.3.250.0030.01316.43
7.3.240.0090.01216.21
7.3.230.0070.01016.47
7.3.210.0060.01216.46
7.3.200.0080.00819.39
7.3.190.0060.01016.65
7.3.180.0120.00916.21
7.3.170.0130.00316.34
7.3.160.0100.00616.31
7.3.120.0050.00914.78
7.3.110.0070.01014.63
7.3.100.0070.01014.64
7.3.90.0070.00714.82
7.3.80.0100.00314.85
7.3.70.0000.01314.78
7.3.60.0070.00714.69
7.3.50.0150.00014.92
7.3.40.0030.01014.87
7.3.30.0060.00314.76
7.3.20.0000.01116.67
7.3.10.0100.00016.23
7.3.00.0030.01216.57
7.2.330.0150.00916.39
7.2.320.0060.01216.51
7.2.310.0030.01316.54
7.2.300.0030.01316.32
7.2.290.0070.01016.58
7.2.250.0090.00914.90
7.2.240.0130.00615.02
7.2.230.0070.00714.99
7.2.220.0030.00715.13
7.2.210.0080.00314.72
7.2.200.0060.00314.79
7.2.190.0080.00414.89
7.2.180.0040.00714.85
7.2.170.0100.00014.67
7.2.60.0030.01016.86
7.2.00.0080.00219.19
7.1.330.0000.01115.52
7.1.320.0040.00715.47
7.1.310.0080.00815.40
7.1.300.0000.01415.52
7.1.290.0100.00315.54
7.1.280.0040.01115.47
7.1.270.0000.01115.69
7.1.260.0090.00615.62
7.1.200.0060.00315.24
7.1.70.0000.01017.10
7.1.60.0000.01416.86
7.1.50.0060.01616.86
7.1.00.0030.07722.54
7.0.200.0000.00716.69
7.0.140.0070.06722.18
7.0.60.0200.07019.94
7.0.50.0070.08017.66
7.0.40.0100.08019.98
7.0.30.0300.07020.13
7.0.20.0400.06720.20
7.0.10.0030.05320.09
7.0.00.0100.06720.33
5.6.280.0000.07321.11
5.6.210.0130.07720.44
5.6.200.0200.06718.16
5.6.190.0130.05720.35
5.6.180.0330.07720.27
5.6.170.0230.03320.51
5.6.160.0130.05020.51
5.6.150.0070.06718.15
5.6.140.0070.03718.14
5.6.130.0170.06318.20
5.6.120.0000.06320.98
5.6.110.0100.08721.11
5.6.100.0170.08021.11
5.6.90.0200.06020.97
5.6.80.0070.03320.39
5.5.350.0100.07020.29
5.5.340.0070.07317.93
5.5.330.0030.05720.19
5.5.320.0270.06320.32
5.5.310.0230.08020.41
5.5.300.0100.07318.01
5.5.290.0100.07718.01
5.5.280.0070.05020.89
5.5.270.0070.06320.93
5.5.260.0170.07320.71
5.5.250.0030.07320.68
5.5.240.3600.03720.25
5.4.450.0300.04319.43
5.4.440.0270.04019.21
5.4.430.0400.03719.56
5.4.420.0370.04319.45
5.4.410.0230.04719.29
5.4.400.0430.04318.91
5.4.390.0830.05719.08
5.4.380.0200.04718.53
5.4.370.0170.04718.49
5.4.360.0170.05018.66
5.4.350.0130.05718.61
5.4.340.0200.04718.46
5.4.320.0080.04012.45
5.4.310.0050.03912.45
5.4.300.0060.03712.45
5.4.290.0110.03312.45
5.4.280.0070.03312.34
5.4.270.0100.03312.34
5.4.260.0100.03412.35
5.4.250.0060.03812.34
5.4.240.0050.03712.35
5.4.230.0050.03812.34
5.4.220.0060.03512.34
5.4.210.0070.04912.34
5.4.200.0080.05112.34
5.4.190.0060.05212.33
5.4.180.0050.03712.34
5.4.170.0120.04612.35
5.4.160.0060.04312.34
5.4.150.0060.03512.34
5.4.140.0120.03112.02
5.4.130.0050.03512.01
5.4.120.0090.04511.96
5.4.110.0030.04311.96
5.4.100.0050.03711.96
5.4.90.0040.03711.96
5.4.80.0060.03611.96
5.4.70.0060.03411.96
5.4.60.0060.03411.96
5.4.50.0050.03511.96
5.4.40.0050.03411.95
5.4.30.0070.03411.95
5.4.20.0040.03711.95
5.4.10.0020.03811.95
5.4.00.0040.03811.44
5.3.290.0040.04812.80
5.3.280.0050.03912.71
5.3.270.0060.04012.72
5.3.260.0060.03912.72
5.3.250.0070.03612.72
5.3.240.0050.03812.72
5.3.230.0050.03812.71
5.3.220.0070.03612.68
5.3.210.0060.03912.68
5.3.200.0050.03612.68
5.3.190.0050.03912.68
5.3.180.0050.03712.67
5.3.170.0050.03712.67
5.3.160.0100.03212.68
5.3.150.0070.03512.67
5.3.140.0030.03812.66
5.3.130.0080.03712.66
5.3.120.0010.04412.66
5.3.110.0050.03912.66
5.3.100.0070.03612.12
5.3.90.0050.03712.08
5.3.80.0060.03612.08
5.3.70.0040.03912.07
5.3.60.0060.03612.06
5.3.50.0090.03312.00
5.3.40.0050.03712.00
5.3.30.0080.03611.94
5.3.20.0090.03811.72
5.3.10.0080.03111.70
5.3.00.0060.03611.68
5.2.170.0050.0309.18
5.2.160.0050.0299.18
5.2.150.0060.0299.18
5.2.140.0030.0339.18
5.2.130.0080.0319.14
5.2.120.0050.0289.14
5.2.110.0030.0309.14
5.2.100.0070.0269.14
5.2.90.0050.0289.14
5.2.80.0020.0329.13
5.2.70.0040.0309.13
5.2.60.0070.0289.09
5.2.50.0060.0289.06
5.2.40.0040.0299.04
5.2.30.0040.0319.01
5.2.20.0020.0329.00
5.2.10.0060.0268.92
5.2.00.0020.0318.77
5.1.60.0050.0238.07
5.1.50.0040.0258.06
5.1.40.0070.0248.04
5.1.30.0050.0278.39
5.1.20.0040.0268.41
5.1.10.0040.0258.14
5.1.00.0050.0238.14
5.0.50.0020.0216.62
5.0.40.0040.0186.48
5.0.30.0030.0316.29
5.0.20.0040.0216.26
5.0.10.0020.0216.23
5.0.00.0050.0306.23
4.4.90.0030.0154.78
4.4.80.0040.0144.75
4.4.70.0060.0144.76
4.4.60.0000.0184.76
4.4.50.0030.0154.77
4.4.40.0030.0254.71
4.4.30.0020.0164.76
4.4.20.0090.0154.85
4.4.10.0030.0154.85
4.4.00.0050.0224.75
4.3.110.0020.0164.67
4.3.100.0020.0154.66
4.3.90.0010.0164.64
4.3.80.0020.0254.59
4.3.70.0030.0144.63
4.3.60.0030.0144.63
4.3.50.0020.0164.63
4.3.40.0030.0244.54
4.3.30.0000.0183.28
4.3.20.0020.0163.25
4.3.10.0020.0163.21
4.3.00.0030.01715.27

preferences:
44.56 ms | 401 KiB | 5 Q