3v4l.org

run code in 300+ PHP versions simultaneously
<?php $txt_var1 = "PHP"; $txt_var2 = &$txt_str1; $txt_var2 = "MySQL"; echo $txt_var1 . $txt_var2; ?>

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)
8.3.40.0070.00718.52
8.3.30.0100.00718.88
8.3.20.0050.00220.07
8.3.10.0080.00023.69
8.3.00.0060.00317.68
8.2.170.0100.00722.96
8.2.160.0090.00920.37
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0000.00820.99
8.2.110.0030.00522.20
8.2.100.0070.00318.03
8.2.90.0050.00319.22
8.2.80.0000.00817.97
8.2.70.0050.00317.50
8.2.60.0070.00018.03
8.2.50.0000.00818.07
8.2.40.0030.00518.16
8.2.30.0030.00618.26
8.2.20.0030.00517.67
8.2.10.0070.00018.00
8.2.00.0090.00017.57
8.1.270.0050.00323.96
8.1.260.0070.00026.35
8.1.250.0080.00028.09
8.1.240.0100.00022.10
8.1.230.0040.00819.02
8.1.220.0060.00317.79
8.1.210.0030.00618.77
8.1.200.0060.00317.23
8.1.190.0030.00617.22
8.1.180.0020.00518.10
8.1.170.0060.00318.59
8.1.160.0000.00721.93
8.1.150.0020.00518.66
8.1.140.0000.00717.25
8.1.130.0000.00817.81
8.1.120.0030.00717.39
8.1.110.0040.00417.37
8.1.100.0030.00417.30
8.1.90.0000.00717.27
8.1.80.0040.00417.27
8.1.70.0070.00017.26
8.1.60.0030.00617.50
8.1.50.0000.00817.30
8.1.40.0040.00417.48
8.1.30.0080.00017.53
8.1.20.0040.00417.63
8.1.10.0040.00417.49
8.1.00.0040.00417.42
8.0.300.0060.00318.77
8.0.290.0070.00316.75
8.0.280.0030.00318.39
8.0.270.0000.00717.24
8.0.260.0000.00817.12
8.0.250.0020.00516.98
8.0.240.0030.00316.97
8.0.230.0040.00416.85
8.0.220.0030.00316.78
8.0.210.0070.00016.77
8.0.200.0040.00416.88
8.0.190.0000.00816.95
8.0.180.0000.00716.90
8.0.170.0040.00416.77
8.0.160.0000.00816.77
8.0.150.0040.00416.88
8.0.140.0040.00416.83
8.0.130.0040.00413.31
8.0.120.0070.00016.82
8.0.110.0080.00016.81
8.0.100.0080.00016.82
8.0.90.0000.00816.70
8.0.80.0060.01016.88
8.0.70.0020.00516.75
8.0.60.0040.00416.99
8.0.50.0000.00716.81
8.0.30.0150.00716.98
8.0.20.0120.00617.40
8.0.10.0040.00416.79
8.0.00.0080.00816.75
7.4.330.0030.00315.00
7.4.320.0000.00716.54
7.4.300.0000.00716.38
7.4.290.0030.00316.51
7.4.280.0040.00416.54
7.4.270.0030.00316.53
7.4.260.0040.00416.55
7.4.250.0040.00416.50
7.4.240.0020.00516.52
7.4.230.0070.00016.42
7.4.220.0160.00916.47
7.4.210.0070.01316.55
7.4.200.0070.00016.40
7.4.160.0140.00316.41
7.4.150.0090.00817.40
7.4.140.0060.01117.86
7.4.130.0090.00816.46
7.4.120.0080.01116.41
7.4.110.0180.00316.54
7.4.100.0100.00716.45
7.4.90.0060.01016.28
7.4.80.0130.01019.39
7.4.70.0130.00316.40
7.4.60.0070.01016.32
7.4.50.0080.00016.40
7.4.40.0160.00616.40
7.4.30.0060.00916.33
7.4.00.0170.00015.04
7.3.330.0060.00013.07
7.3.320.0050.00013.10
7.3.310.0000.00716.27
7.3.300.0070.00016.17
7.3.290.0050.01016.30
7.3.280.0130.00716.20
7.3.270.0070.01017.40
7.3.260.0090.00916.25
7.3.250.0070.01116.40
7.3.240.0100.00716.30
7.3.230.0130.00316.45
7.3.210.0140.00316.36
7.3.200.0130.00919.39
7.3.190.0140.00716.32
7.3.180.0080.00816.45
7.3.170.0070.00816.46
7.3.160.0100.00616.44
7.3.120.0080.00614.67
7.3.10.0080.00816.66
7.3.00.0070.00716.32
7.2.330.0100.00716.32
7.2.320.0170.00016.33
7.2.310.0100.01316.63
7.2.300.0080.00816.42
7.2.290.0120.00616.60
7.2.130.0060.00616.84
7.2.120.0070.00716.91
7.2.110.0090.00616.91
7.2.100.0040.00816.65
7.2.90.0070.00716.70
7.2.80.0090.00416.63
7.2.70.0110.00416.88
7.2.60.0040.00816.82
7.2.50.0040.01116.73
7.2.40.0070.01116.66
7.2.30.0110.00616.90
7.2.20.0000.01416.64
7.2.10.0130.00016.81
7.2.00.0090.00616.59
7.1.250.0030.00615.38
7.1.200.0060.00815.43
7.1.70.0060.00316.90
7.1.60.0060.01919.70
7.1.50.0100.01416.85
7.1.00.0070.07322.57
7.0.200.0030.00316.89
7.0.140.0100.06322.07
7.0.60.0070.08719.83
7.0.50.0070.08017.87
7.0.40.0030.09020.20
7.0.30.0230.04320.18
7.0.20.0270.07720.09
7.0.10.0130.04320.01
7.0.00.0130.05020.18
5.6.280.0100.06721.09
5.6.210.0070.08320.65
5.6.200.0070.04018.16
5.6.190.0100.08720.60
5.6.180.0100.04020.40
5.6.170.0130.05320.41
5.6.160.0000.04720.32
5.6.150.0030.04318.16
5.6.140.0070.08018.21
5.6.130.0070.04018.14
5.6.120.0070.08320.98
5.6.110.0100.06721.10
5.6.100.0100.07721.03
5.6.90.0030.08021.01
5.6.80.0130.06020.39
5.6.70.0300.07020.35
5.5.350.0330.07320.35
5.5.340.0100.07317.95
5.5.330.0030.09320.43
5.5.320.0100.05020.23
5.5.310.0300.06320.31
5.5.300.0000.04317.98
5.5.290.0030.05317.89
5.5.280.0070.06720.79
5.5.270.0070.06720.82
5.5.260.0130.07020.66
5.5.250.0070.07320.46
5.5.240.0070.05720.15
5.4.450.0300.07019.32
5.4.440.0700.05719.29
5.4.430.0900.05019.41
5.4.420.0900.04719.51
5.4.410.0130.05718.89
5.4.400.0370.05018.74
5.4.390.0370.04718.69
5.4.380.0130.05318.65
5.4.370.0030.04018.68
5.4.360.0000.05718.68
5.4.350.0050.04211.97
5.4.340.0060.03511.97
5.4.320.0110.05412.45
5.4.310.0040.04912.45
5.4.300.0050.04112.45
5.4.290.0060.03812.45
5.4.280.0050.03612.35
5.4.270.0050.04412.34
5.4.260.0050.03912.35
5.4.250.0060.03712.35
5.4.240.0040.03812.34
5.4.230.0030.04112.34
5.4.220.0090.03312.34
5.4.210.0070.03412.34
5.4.200.0080.03612.34
5.4.190.0060.03612.34
5.4.180.0050.03912.34
5.4.170.0030.04112.35
5.4.160.0060.04012.34
5.4.150.0030.03912.34
5.4.140.0110.03912.02
5.4.130.0070.03412.01
5.4.120.0070.04711.96
5.4.110.0070.04111.96
5.4.100.0090.03811.96
5.4.90.0070.03611.96
5.4.80.0060.03711.96
5.4.70.0030.03811.96
5.4.60.0090.03711.96
5.4.50.0090.03311.96
5.4.40.0110.04811.95
5.4.30.0080.03911.95
5.4.20.0090.03211.95
5.4.10.0060.03511.95
5.4.00.0060.03611.43
5.3.290.0090.03812.80
5.3.280.0080.03712.71
5.3.270.0060.04212.73
5.3.260.0090.03612.72
5.3.250.0050.04412.72
5.3.240.0060.04812.71
5.3.230.0060.03812.71
5.3.220.0060.04412.68
5.3.210.0050.05112.68
5.3.200.0030.04012.68
5.3.190.0080.03612.68
5.3.180.0080.04012.67
5.3.170.0050.03812.67
5.3.160.0090.03412.67
5.3.150.0060.04312.67
5.3.140.0060.04312.66
5.3.130.0070.04112.66
5.3.120.0100.04212.66
5.3.110.0070.04712.66
5.3.100.0070.04712.11
5.3.90.0050.03712.08
5.3.80.0060.03712.07
5.3.70.0050.03812.08
5.3.60.0080.04412.06
5.3.50.0040.04012.00
5.3.40.0070.04312.00
5.3.30.0090.04411.94
5.3.20.0100.03811.72
5.3.10.0040.03811.69
5.3.00.0090.04711.67
5.2.170.0020.0429.18
5.2.160.0030.0389.18
5.2.150.0060.0299.18
5.2.140.0030.0419.17
5.2.130.0030.0309.14
5.2.120.0050.0399.14
5.2.110.0060.0329.14
5.2.100.0090.0259.13
5.2.90.0040.0379.13
5.2.80.0040.0319.13
5.2.70.0050.0389.13
5.2.60.0050.0319.08
5.2.50.0060.0299.05
5.2.40.0070.0349.03
5.2.30.0090.0399.01
5.2.20.0070.0279.00
5.2.10.0050.0378.92
5.2.00.0060.0388.77
5.1.60.0040.0248.06
5.1.50.0040.0338.06
5.1.40.0060.0298.04
5.1.30.0050.0308.39
5.1.20.0060.0258.40
5.1.10.0060.0298.13
5.1.00.0040.0298.13
5.0.50.0070.0206.61
5.0.40.0020.0246.47
5.0.30.0040.0306.28
5.0.20.0050.0186.25
5.0.10.0030.0216.23
5.0.00.0050.0366.23
4.4.90.0030.0164.78
4.4.80.0070.0214.75
4.4.70.0030.0224.75
4.4.60.0040.0254.75
4.4.50.0040.0204.77
4.4.40.0050.0324.70
4.4.30.0010.0174.76
4.4.20.0030.0164.85
4.4.10.0030.0154.85
4.4.00.0040.0294.76
4.3.110.0030.0204.67
4.3.100.0000.0174.67
4.3.90.0040.0204.63
4.3.80.0030.0254.59
4.3.70.0020.0234.63
4.3.60.0030.0204.63
4.3.50.0050.0134.63
4.3.40.0020.0264.53
4.3.30.0030.0173.28
4.3.20.0030.0153.26
4.3.10.0020.0153.21
4.3.00.0000.0277.56

preferences:
41.67 ms | 400 KiB | 5 Q