3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var1 = 'ccc'; $var2 = $var1; echo "===========\n"; debug_zval_dump($var1, $var2); $var2 .= 'xxx'; debug_zval_dump($var1, $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)
8.3.60.0110.00818.28
8.3.50.0080.01222.83
8.3.40.0150.00418.67
8.3.30.0100.00319.02
8.3.20.0070.00020.21
8.3.10.0040.00423.67
8.3.00.0050.00319.38
8.2.180.0150.00616.50
8.2.170.0040.01122.96
8.2.160.0040.01120.38
8.2.150.0030.00524.18
8.2.140.0080.00024.66
8.2.130.0070.00026.16
8.2.120.0050.00321.00
8.2.110.0100.00020.39
8.2.100.0040.00818.16
8.2.90.0040.00419.36
8.2.80.0000.00817.97
8.2.70.0040.00417.50
8.2.60.0040.00417.93
8.2.50.0000.00818.07
8.2.40.0060.00318.34
8.2.30.0000.00819.35
8.2.20.0040.00417.77
8.2.10.0030.00318.09
8.2.00.0030.00617.60
8.1.280.0130.00325.92
8.1.270.0040.00423.96
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0040.00422.02
8.1.230.0080.00318.99
8.1.220.0070.00017.74
8.1.210.0040.00418.77
8.1.200.0070.00317.22
8.1.190.0080.00017.23
8.1.180.0030.00618.10
8.1.170.0080.00018.54
8.1.160.0030.00321.88
8.1.150.0040.00418.81
8.1.140.0050.00317.29
8.1.130.0070.00017.86
8.1.120.0040.00417.30
8.1.110.0020.00517.33
8.1.100.0070.00017.40
8.1.90.0050.00217.44
8.1.80.0020.00517.37
8.1.70.0040.00417.36
8.1.60.0060.00317.54
8.1.50.0060.00317.43
8.1.40.0030.00517.41
8.1.30.0050.00317.56
8.1.20.0040.00417.54
8.1.10.0000.00717.46
8.1.00.0080.00017.48
8.0.300.0070.00018.77
8.0.290.0050.00216.75
8.0.280.0070.00018.35
8.0.270.0000.00717.11
8.0.260.0000.00617.20
8.0.250.0000.00616.79
8.0.240.0000.00616.89
8.0.230.0040.00316.87
8.0.220.0060.00316.81
8.0.210.0050.00316.82
8.0.200.0030.00316.89
8.0.190.0000.00716.82
8.0.180.0030.00316.90
8.0.170.0050.00316.84
8.0.160.0040.00416.75
8.0.150.0070.00016.77
8.0.140.0000.00716.66
8.0.130.0060.00013.19
8.0.120.0040.00416.80
8.0.110.0020.00516.73
8.0.100.0040.00416.88
8.0.90.0040.00416.67
8.0.80.0090.00616.74
8.0.70.0040.00416.78
8.0.60.0040.00416.66
8.0.50.0000.00716.68
8.0.30.0090.01516.92
8.0.20.0110.00817.40
8.0.10.0030.00516.78
8.0.00.0150.00516.65
7.4.330.0030.00315.01
7.4.320.0070.00016.44
7.4.300.0030.00316.52
7.4.290.0000.00716.54
7.4.280.0030.00516.50
7.4.270.0000.00616.57
7.4.260.0070.00016.50
7.4.250.0000.00816.41
7.4.240.0020.00516.45
7.4.230.0060.00016.42
7.4.220.0050.01416.38
7.4.210.0070.01016.39
7.4.200.0030.00316.55
7.4.160.0100.01016.43
7.4.150.0160.00017.40
7.4.140.0120.00817.86
7.4.130.0100.00716.44
7.4.120.0110.00516.44
7.4.110.0070.01416.38
7.4.100.0110.00616.49
7.4.90.0100.01016.39
7.4.80.0070.01419.39
7.4.70.0070.01016.48
7.4.60.0100.00716.42
7.4.50.0040.00416.55
7.4.40.0060.01616.42
7.4.30.0110.00516.59
7.4.00.0030.01014.82
7.3.330.0020.00212.90
7.3.320.0030.00313.08
7.3.310.0000.00816.06
7.3.300.0000.00716.18
7.3.290.0030.01616.22
7.3.280.0060.01216.18
7.3.270.0060.01117.40
7.3.260.0170.00716.52
7.3.250.0080.01016.23
7.3.240.0100.00616.30
7.3.230.0100.00716.47
7.3.210.0060.01516.36
7.3.200.0140.00319.39
7.3.190.0130.00316.33
7.3.180.0100.00616.42
7.3.170.0170.00316.38
7.3.160.0060.00916.45
7.3.10.0140.00516.65
7.3.00.0120.00816.09
7.2.330.0110.00516.14
7.2.320.0000.01716.63
7.2.310.0130.00716.55
7.2.300.0130.00316.69
7.2.290.0090.00916.42
7.2.130.0130.00816.24
7.2.120.0220.00316.42
7.2.110.0080.00416.41
7.2.100.0120.00616.11
7.2.90.0160.00616.25
7.2.80.0090.00616.35
7.2.70.0110.00716.63
7.2.60.0120.00316.45
7.2.50.0000.01616.20
7.2.40.0000.01016.31
7.2.30.0060.01216.47
7.2.20.0090.00316.25
7.2.10.0030.01116.46
7.2.00.0080.00818.01
7.1.250.0120.00915.45
7.1.200.0110.00715.88
7.1.100.0030.00918.05
7.1.70.0030.00716.87
7.1.60.0030.01619.46
7.1.50.0030.01316.96
7.1.00.0030.07722.48
7.0.200.0040.00416.76
7.0.140.0030.07722.00
7.0.60.0100.05319.95
7.0.50.0070.07317.81
7.0.40.0000.04719.97
7.0.30.0230.03320.17
7.0.20.0200.04320.04
7.0.10.0030.04320.13
7.0.00.0070.04320.09
5.6.280.0070.07020.86
5.6.210.0070.07720.50
5.6.200.0030.05018.08
5.6.190.0030.04020.41
5.6.180.0400.04320.45
5.6.170.0370.07720.49
5.6.160.0230.06720.70
5.6.150.0100.07718.09
5.6.140.0100.07718.21
5.6.130.0070.06018.21
5.6.120.0030.06021.09
5.6.110.0100.04321.02
5.6.100.0100.06021.11
5.6.90.0070.09320.96
5.6.80.0100.08320.41
5.5.350.0270.07320.42
5.5.340.0070.04018.00
5.5.330.0030.04720.21
5.5.320.0330.03320.40
5.5.310.0300.03720.12
5.5.300.0000.05317.96
5.5.290.0070.05017.96
5.5.280.0030.04020.96
5.5.270.0100.04720.84
5.5.260.0000.06720.96
5.5.250.0130.07320.68
5.5.240.0170.05720.14
5.4.450.0270.04319.58
5.4.440.0570.04719.42
5.4.430.0530.04319.56
5.4.420.0230.04019.20
5.4.410.0230.04019.28
5.4.400.0700.04318.94
5.4.390.0400.04018.82
5.4.380.0330.06018.73
5.4.370.0470.05018.75
5.4.360.0500.04718.62
5.4.350.0330.05718.71
5.4.340.0500.07718.60
5.4.320.0050.04312.45
5.4.310.0050.03812.45
5.4.300.0070.03712.45
5.4.290.0080.04212.45
5.4.280.0070.04412.34
5.4.270.0110.03312.35
5.4.260.0050.04212.35
5.4.250.0100.04112.35
5.4.240.0090.03512.35
5.4.230.0120.03412.34
5.4.220.0090.03612.34
5.4.210.0060.03512.34
5.4.200.0060.03712.34
5.4.190.0040.03912.33
5.4.180.0100.04212.34
5.4.170.0060.03812.34
5.4.160.0060.03612.34
5.4.150.0090.03612.34
5.4.140.0060.03512.02
5.4.130.0090.03412.01
5.4.120.0030.04111.97
5.4.110.0020.04111.97
5.4.100.0070.03411.96
5.4.90.0080.03411.96
5.4.80.0110.03111.96
5.4.70.0060.04211.96
5.4.60.0050.03611.96
5.4.50.0040.03811.96
5.4.40.0080.03311.95
5.4.30.0070.03411.95
5.4.20.0110.03111.95
5.4.10.0040.03911.95
5.4.00.0010.04011.43
5.3.290.0050.04312.80
5.3.280.0060.04312.71
5.3.270.0110.03512.72
5.3.260.0090.03712.72
5.3.250.0030.04012.72
5.3.240.0050.03912.72
5.3.230.0070.03612.71
5.3.220.0040.04212.68
5.3.210.0080.04212.68
5.3.200.0050.04012.68
5.3.190.0050.03912.68
5.3.180.0070.03712.67
5.3.170.0070.04312.66
5.3.160.0090.03412.67
5.3.150.0080.04412.68
5.3.140.0100.05112.66
5.3.130.0060.05612.66
5.3.120.0090.04412.66
5.3.110.0070.03912.66
5.3.100.0060.04212.12
5.3.90.0070.04112.08
5.3.80.0090.04512.08
5.3.70.0070.04112.07
5.3.60.0080.04512.06
5.3.50.0090.04012.00
5.3.40.0110.04012.00
5.3.30.0060.03411.96
5.3.20.0060.04411.72
5.3.10.0070.04811.69
5.3.00.0040.04211.68
5.2.170.0060.0339.18
5.2.160.0070.0349.18
5.2.150.0050.0309.18
5.2.140.0020.0349.18
5.2.130.0010.0339.14
5.2.120.0040.0319.14
5.2.110.0050.0309.14
5.2.100.0080.0309.13
5.2.90.0070.0319.13
5.2.80.0030.0339.13
5.2.70.0050.0329.13
5.2.60.0070.0309.09
5.2.50.0080.0399.05
5.2.40.0060.0369.03
5.2.30.0070.0319.01
5.2.20.0060.0359.00
5.2.10.0060.0358.92
5.2.00.0050.0358.77
5.1.60.0070.0258.06
5.1.50.0070.0268.05
5.1.40.0100.0298.04
5.1.30.0070.0288.39
5.1.20.0040.0438.41
5.1.10.0070.0298.13
5.1.00.0070.0238.14
5.0.50.0050.0216.62
5.0.40.0030.0206.47
5.0.30.0020.0336.29
5.0.20.0030.0206.26
5.0.10.0070.0196.23
5.0.00.0030.0326.23
4.4.90.0060.0164.78
4.4.80.0040.0174.75
4.4.70.0020.0204.75
4.4.60.0040.0154.75
4.4.50.0050.0214.77
4.4.40.0040.0264.71
4.4.30.0030.0164.76
4.4.20.0060.0134.84
4.4.10.0030.0184.85
4.4.00.0040.0274.76
4.3.110.0050.0154.67
4.3.100.0040.0154.66
4.3.90.0030.0164.64
4.3.80.0040.0244.58
4.3.70.0030.0154.63
4.3.60.0020.0154.63
4.3.50.0020.0194.63
4.3.40.0090.0244.54
4.3.30.0030.0163.28
4.3.20.0050.0153.25
4.3.10.0010.0193.21
4.3.00.0030.01718.56

preferences:
43.01 ms | 400 KiB | 5 Q