3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s="aaaaaa"; $q="str_replace"; $g = ""; while (strlen($g)<strlen($s)) { $q = pack("H*",md5($g.$q."q1w2e3r4")); $g.=substr($q,0,8); } echo $s^$g;

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)
8.3.60.0000.02118.56
8.3.50.0150.00322.06
8.3.40.0150.00618.63
8.3.30.0060.01018.98
8.3.20.0140.00020.24
8.3.10.0090.00923.65
8.3.00.0040.00418.89
8.2.180.0120.00618.16
8.2.170.0030.01022.96
8.2.160.0130.00720.36
8.2.150.0040.00424.18
8.2.140.0150.00324.66
8.2.130.0090.00926.16
8.2.120.0000.00820.67
8.2.110.0060.00322.10
8.2.100.0040.00817.84
8.2.90.0040.00419.30
8.2.80.0030.00517.97
8.2.70.0050.00317.63
8.2.60.0050.00517.93
8.2.50.0050.00318.07
8.2.40.0030.00621.18
8.2.30.0000.00818.30
8.2.20.0040.00417.79
8.2.10.0040.00418.02
8.2.00.0080.00017.73
8.1.280.0150.00325.92
8.1.270.0070.00423.97
8.1.260.0080.00026.35
8.1.250.0000.00828.09
8.1.240.0040.00422.24
8.1.230.0040.00719.01
8.1.220.0040.00417.74
8.1.210.0060.00318.77
8.1.200.0080.00417.25
8.1.190.0050.00317.23
8.1.180.0070.00418.10
8.1.170.0040.00418.46
8.1.160.0000.00822.01
8.1.150.0070.00018.50
8.1.140.0040.00417.36
8.1.130.0000.00717.77
8.1.120.0000.00717.36
8.1.110.0080.00017.48
8.1.100.0030.00317.48
8.1.90.0000.00717.34
8.1.80.0040.00417.38
8.1.70.0030.00617.17
8.1.60.0080.00017.46
8.1.50.0070.00017.40
8.1.40.0040.00417.56
8.1.30.0000.00817.66
8.1.20.0050.00317.68
8.1.10.0000.00717.48
8.1.00.0040.00417.41
8.0.300.0020.00518.77
8.0.290.0040.00417.18
8.0.280.0070.00018.42
8.0.270.0040.00417.14
8.0.260.0060.00017.15
8.0.250.0030.00316.93
8.0.240.0030.00316.95
8.0.230.0030.00316.88
8.0.220.0070.00016.81
8.0.210.0000.00716.77
8.0.200.0030.00316.92
8.0.190.0000.00716.82
8.0.180.0040.00416.78
8.0.170.0040.00416.85
8.0.160.0000.00716.92
8.0.150.0000.00716.88
8.0.140.0040.00316.83
8.0.130.0030.00313.28
8.0.120.0000.00816.90
8.0.110.0040.00416.85
8.0.100.0080.00016.86
8.0.90.0040.00416.92
8.0.80.0100.01316.83
8.0.70.0000.00716.84
8.0.60.0040.00416.91
8.0.50.0050.00216.88
8.0.30.0070.01517.05
8.0.20.0100.00817.40
8.0.10.0030.00316.75
8.0.00.0160.00416.70
7.4.330.0050.00015.01
7.4.320.0030.00316.42
7.4.300.0030.00316.57
7.4.290.0040.00416.57
7.4.280.0070.00016.41
7.4.270.0070.00016.53
7.4.260.0030.00316.41
7.4.250.0070.00016.44
7.4.240.0030.00416.46
7.4.230.0030.00316.63
7.4.220.0140.00316.39
7.4.210.0090.00616.47
7.4.200.0000.00816.47
7.4.190.0000.00816.23
7.4.160.0140.00316.34
7.4.150.0150.00617.40
7.4.140.0150.00217.86
7.4.130.0060.01116.48
7.4.120.0080.00816.40
7.4.110.0090.00916.39
7.4.100.0100.01016.32
7.4.90.0060.01216.54
7.4.80.0160.00319.39
7.4.70.0000.01616.39
7.4.60.0130.00416.43
7.4.50.0040.00416.49
7.4.40.0060.01216.37
7.4.30.0080.00816.44
7.4.00.0070.00714.89
7.3.330.0020.00213.15
7.3.320.0050.00013.11
7.3.310.0000.00716.47
7.3.300.0030.00316.30
7.3.290.0090.00916.35
7.3.280.0030.01416.34
7.3.270.0100.00717.40
7.3.260.0210.00416.61
7.3.250.0100.00716.32
7.3.240.0100.00716.40
7.3.230.0080.01316.61
7.3.210.0030.01616.50
7.3.200.0050.01119.39
7.3.190.0060.01316.31
7.3.180.0090.00616.36
7.3.170.0060.01116.60
7.3.160.0130.00316.31
7.3.120.0060.00614.52
7.3.10.0070.00716.67
7.3.00.0060.00916.75
7.2.330.0090.01516.94
7.2.320.0120.01216.70
7.2.310.0070.01016.48
7.2.300.0090.00916.67
7.2.290.0070.01516.80
7.2.130.0060.00616.66
7.2.120.0090.00016.96
7.2.110.0080.00916.87
7.2.100.0120.00317.04
7.2.90.0060.00616.91
7.2.80.0110.00016.91
7.2.70.0070.01017.12
7.2.60.0090.00317.00
7.2.50.0000.01516.77
7.2.40.0100.00716.41
7.2.30.0070.01016.76
7.2.20.0040.01216.73
7.2.10.0050.00516.94
7.2.00.0060.00917.04
7.1.250.0120.00315.91
7.1.100.0000.01218.38
7.1.70.0070.00417.18
7.1.60.0070.01719.70
7.1.50.0250.01434.79
7.1.00.0000.08022.45
7.0.200.0000.00716.79
7.0.140.0100.06321.99
7.0.60.0070.08020.06
7.0.50.0100.07317.81
7.0.40.0130.07319.91
7.0.30.0330.07320.21
7.0.20.0330.06320.04
7.0.10.0000.09020.18
7.0.00.0130.08320.16
5.6.280.0130.06321.02
5.6.210.0070.08020.54
5.6.200.0070.08718.11
5.6.190.0130.07720.60
5.6.180.0230.04020.35
5.6.170.0230.07020.51
5.6.160.0100.07720.51
5.6.150.0030.03718.16
5.6.140.0030.07718.09
5.6.130.0130.07318.14
5.6.120.0200.06720.98
5.6.110.0200.07020.98
5.6.100.0130.05720.97
5.6.90.0100.06320.99
5.6.80.0030.07720.28
5.5.350.0130.07720.44
5.5.340.0100.06717.98
5.5.330.0000.06320.19
5.5.320.0130.04720.22
5.5.310.0400.07020.13
5.5.300.0070.08317.96
5.5.290.0070.08317.91
5.5.280.0030.08320.76
5.5.270.0070.03720.79
5.5.260.0000.09020.86
5.5.250.0130.08020.71
5.5.240.0000.08020.23
5.4.450.1000.06019.57
5.4.440.0430.04726.08
5.4.430.0070.04725.72
5.4.420.0370.04025.32
5.4.410.0030.03319.32
5.4.400.0370.04725.29
5.4.390.0200.05025.28
5.4.380.0330.05718.72
5.4.370.0130.07718.71
5.4.360.0130.05018.65
5.4.350.0030.06318.45
5.4.340.0200.05018.72
5.4.320.0060.04312.45
5.4.310.0090.03512.45
5.4.300.0020.04112.45
5.4.290.0050.03912.45
5.4.280.0020.03912.35
5.4.270.0080.04112.35
5.4.260.0060.03712.35
5.4.250.0090.03412.35
5.4.240.0080.03412.35
5.4.230.0040.04112.34
5.4.220.0050.04012.34
5.4.210.0020.03912.34
5.4.200.0060.03712.34
5.4.190.0050.03612.34
5.4.180.0060.03712.34
5.4.170.0080.03512.35
5.4.160.0060.04712.35
5.4.150.0030.03912.34
5.4.140.0060.04812.03
5.4.130.0070.03412.01
5.4.120.0060.03411.98
5.4.110.0070.03411.97
5.4.100.0050.03611.97
5.4.90.0070.04311.96
5.4.80.0040.04111.96
5.4.70.0070.03411.96
5.4.60.0080.03411.96
5.4.50.0100.03411.96
5.4.40.0050.03511.95
5.4.30.0070.03911.95
5.4.20.0080.03411.95
5.4.10.0070.03211.95
5.4.00.0070.03511.44
5.3.290.0050.04212.80
5.3.280.0040.03912.71
5.3.270.0080.04712.72
5.3.260.0050.03912.71
5.3.250.0090.04912.72
5.3.240.0060.05212.72
5.3.230.0090.03512.71
5.3.220.0070.03612.68
5.3.210.0100.04612.68
5.3.200.0070.05012.68
5.3.190.0090.04212.67
5.3.180.0070.03612.67
5.3.170.0050.03712.67
5.3.160.0070.04912.67
5.3.150.0090.04812.68
5.3.140.0110.03812.66
5.3.130.0040.04212.66
5.3.120.0080.03812.66
5.3.110.0090.05412.66
5.3.100.0060.03712.12
5.3.90.0050.04012.09
5.3.80.0070.03512.08
5.3.70.0060.04112.07
5.3.60.0060.03612.07
5.3.50.0020.04012.00
5.3.40.0080.03812.00
5.3.30.0060.03611.94
5.3.20.0070.03511.73
5.3.10.0080.03311.69
5.3.00.0060.03711.68
5.2.170.0030.0329.18
5.2.160.0030.0309.17
5.2.150.0040.0329.18
5.2.140.0040.0369.18
5.2.130.0080.0279.13
5.2.120.0080.0379.13
5.2.110.0050.0289.14
5.2.100.0050.0279.14
5.2.90.0070.0269.14
5.2.80.0050.0309.14
5.2.70.0050.0429.13
5.2.60.0040.0419.09
5.2.50.0050.0409.05
5.2.40.0070.0269.04
5.2.30.0050.0329.01
5.2.20.0040.0299.02
5.2.10.0050.0268.93
5.2.00.0050.0318.79
5.1.60.0050.0238.07
5.1.50.0030.0358.07
5.1.40.0050.0248.05
5.1.30.0050.0268.40
5.1.20.0030.0288.42
5.1.10.0030.0278.15
5.1.00.0030.0268.15
5.0.50.0050.0196.63
5.0.40.0040.0246.49
5.0.30.0050.0306.30
5.0.20.0060.0166.27
5.0.10.0040.0206.25
5.0.00.0010.0416.24
4.4.90.0060.0124.78
4.4.80.0030.0154.75
4.4.70.0040.0194.76
4.4.60.0010.0214.76
4.4.50.0020.0164.77
4.4.40.0030.0244.70
4.4.30.0050.0134.76
4.4.20.0050.0134.84
4.4.10.0060.0124.85
4.4.00.0020.0264.76
4.3.110.0020.0174.67
4.3.100.0040.0194.66
4.3.90.0020.0154.63
4.3.80.0010.0264.58
4.3.70.0030.0174.63
4.3.60.0020.0154.63
4.3.50.0010.0174.63
4.3.40.0030.0314.54
4.3.30.0020.0163.29
4.3.20.0010.0173.27
4.3.10.0020.0163.23
4.3.00.0000.02025.00

preferences:
40.6 ms | 401 KiB | 5 Q