3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "aaaaaaaaaaaaaaaababababababababa"; while(strpos($a, "aa") ||strpos($a, "ba")) { $a = str_replace(array("aa", "ba"), "a", $a); } echo $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)
8.3.60.0140.00318.20
8.3.50.0110.00616.15
8.3.40.0130.00718.79
8.3.30.0000.01419.07
8.3.20.0040.00420.06
8.3.10.0040.00423.48
8.3.00.0050.00319.38
8.2.180.0060.00918.41
8.2.170.0120.00322.96
8.2.160.0030.01420.43
8.2.150.0000.00724.18
8.2.140.0050.00324.66
8.2.130.0130.00026.16
8.2.120.0030.00622.11
8.2.110.0060.00320.52
8.2.100.0090.00317.72
8.2.90.0060.00319.24
8.2.80.0080.00017.97
8.2.70.0000.00817.50
8.2.60.0040.00418.05
8.2.50.0040.00418.07
8.2.40.0030.00618.22
8.2.30.0000.00717.93
8.2.20.0040.00417.57
8.2.10.0050.00218.14
8.2.00.0040.00417.59
8.1.280.0100.01025.92
8.1.270.0060.00321.91
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0100.00021.92
8.1.230.0070.00421.06
8.1.220.0050.00317.74
8.1.210.0000.00818.77
8.1.200.0050.00517.35
8.1.190.0080.00017.22
8.1.180.0080.00018.10
8.1.170.0000.00820.25
8.1.160.0040.00422.00
8.1.150.0000.00718.82
8.1.140.0000.00717.48
8.1.130.0020.00517.85
8.1.120.0040.00417.35
8.1.110.0070.00017.35
8.1.100.0050.00217.45
8.1.90.0050.00317.41
8.1.80.0030.00417.44
8.1.70.0040.00417.41
8.1.60.0060.00317.46
8.1.50.0050.00317.51
8.1.40.0050.00317.54
8.1.30.0000.01017.55
8.1.20.0050.00317.52
8.1.10.0070.00017.57
8.1.00.0040.00417.35
8.0.300.0000.00718.77
8.0.290.0070.00016.63
8.0.280.0040.00418.32
8.0.270.0030.00317.23
8.0.260.0060.00017.20
8.0.250.0000.00716.96
8.0.240.0040.00417.01
8.0.230.0030.00316.83
8.0.220.0040.00416.76
8.0.210.0000.00616.89
8.0.200.0060.00016.95
8.0.190.0030.00416.95
8.0.180.0000.00716.79
8.0.170.0000.00716.88
8.0.160.0080.00016.89
8.0.150.0000.00716.87
8.0.140.0000.00716.85
8.0.130.0030.00313.31
8.0.120.0080.00016.75
8.0.110.0000.00716.90
8.0.100.0020.00516.93
8.0.90.0030.00516.93
8.0.80.0080.01616.84
8.0.70.0050.00316.72
8.0.60.0040.00416.87
8.0.50.0040.00416.94
8.0.30.0120.01417.14
8.0.20.0120.00717.40
8.0.10.0030.00417.07
8.0.00.0100.00616.52
7.4.330.0000.00515.14
7.4.320.0030.00316.63
7.4.300.0060.00016.53
7.4.290.0030.00616.50
7.4.280.0080.00016.59
7.4.270.0030.00316.64
7.4.260.0030.00316.57
7.4.250.0000.00816.45
7.4.240.0020.00516.52
7.4.230.0030.00316.50
7.4.220.0100.01616.66
7.4.210.0070.00716.60
7.4.200.0000.00716.70
7.4.160.0050.01116.52
7.4.150.0040.01317.40
7.4.140.0120.00817.86
7.4.130.0110.00616.46
7.4.120.0120.00516.34
7.4.110.0120.00816.54
7.4.100.0110.00616.59
7.4.90.0140.00416.54
7.4.80.0030.01619.39
7.4.70.0090.00916.23
7.4.60.0100.00516.39
7.4.50.0000.00416.38
7.4.40.0070.01016.52
7.4.30.0060.01516.35
7.4.00.0030.00915.00
7.3.330.0030.00313.11
7.3.320.0000.00513.04
7.3.310.0000.00716.28
7.3.300.0040.00416.23
7.3.290.0110.00616.25
7.3.280.0060.01216.22
7.3.270.0070.01017.40
7.3.260.0120.01216.57
7.3.250.0120.00516.49
7.3.240.0060.01016.25
7.3.230.0060.01216.51
7.3.210.0070.01016.20
7.3.200.0100.00719.39
7.3.190.0070.01016.50
7.3.180.0070.00716.23
7.3.170.0120.00416.37
7.3.160.0120.00916.24
7.2.330.0070.01016.42
7.2.320.0130.01116.71
7.2.310.0130.02816.66
7.2.300.0070.01016.66
7.2.290.0060.01116.79
7.2.00.0120.00619.36
7.1.100.0000.00917.80
7.1.70.0040.00717.13
7.1.60.0060.00616.84
7.1.50.0190.00634.72
7.1.00.0100.07022.43
7.0.200.0070.01116.48
7.0.140.0000.07722.18
7.0.60.0130.05719.93
7.0.50.0170.06317.81
7.0.40.0000.09319.92
7.0.30.0530.05020.11
7.0.20.0400.06720.30
7.0.10.0030.06720.04
7.0.00.0100.08020.12
5.6.280.0000.07720.98
5.6.210.0130.06320.70
5.6.200.0030.08018.17
5.6.190.0000.05720.77
5.6.180.0200.07020.47
5.6.170.0330.06320.62
5.6.160.0130.07720.41
5.6.150.0070.03718.21
5.6.140.0100.04318.14
5.6.130.0100.08018.12
5.6.120.0100.07321.00
5.6.110.0030.08321.01
5.6.100.0100.08020.88
5.6.90.0130.07721.05
5.6.80.0030.08320.30
5.6.70.4530.03720.50
5.5.350.0430.06720.46
5.5.340.0070.04017.89
5.5.330.0070.03720.47
5.5.320.0330.07020.28
5.5.310.0230.04020.16
5.5.300.0100.08017.96
5.5.290.0030.05017.95
5.5.280.0030.07320.80
5.5.270.0100.08720.83
5.5.260.0030.06020.86
5.5.250.0030.08020.61
5.5.240.4170.04020.03
5.4.450.0700.06319.61
5.4.440.0870.07019.45
5.4.430.0500.05719.31
5.4.420.0730.05319.51
5.4.410.0830.05019.11
5.4.400.0500.06319.08
5.4.390.0600.05719.30
5.4.380.0870.05019.30
5.4.370.0700.05318.95
5.4.360.0730.08018.95
5.4.350.0800.04319.30
5.4.340.0080.03211.97
5.4.320.0080.03612.45
5.4.310.0060.05012.45
5.4.300.0100.03712.45
5.4.290.0050.04212.46
5.4.280.0060.03512.35
5.4.270.0060.03612.35
5.4.260.0070.03712.35
5.4.250.0050.04212.35
5.4.240.0080.03712.35
5.4.230.0070.03612.34
5.4.220.0060.04012.34
5.4.210.0080.03712.34
5.4.200.0060.03712.34
5.4.190.0030.04312.34
5.4.180.0050.03612.34
5.4.170.0070.04212.35
5.4.160.0080.03312.34
5.4.150.0110.03812.34
5.4.140.0060.03612.02
5.4.130.0040.03712.02
5.4.120.0090.04011.97
5.4.110.0070.04411.96
5.4.100.0030.03711.97
5.4.90.0040.04111.96
5.4.80.0090.03311.96
5.4.70.0070.04111.96
5.4.60.0060.03511.96
5.4.50.0100.04011.96
5.4.40.0060.04011.95
5.4.30.0060.04011.95
5.4.20.0110.03511.95
5.4.10.0080.04111.95
5.4.00.0070.03611.43
5.3.290.0080.03812.80
5.3.280.0110.03412.71
5.3.270.0050.03912.72
5.3.260.0040.04512.72
5.3.250.0060.04112.72
5.3.240.0070.03712.72
5.3.230.0080.03512.71
5.3.220.0060.04312.68
5.3.210.0060.03912.68
5.3.200.0050.03712.68
5.3.190.0080.03812.68
5.3.180.0080.03512.68
5.3.170.0050.03912.67
5.3.160.0060.03912.67
5.3.150.0070.04012.67
5.3.140.0020.04012.66
5.3.130.0060.03712.66
5.3.120.0060.05212.66
5.3.110.0080.03612.66
5.3.100.0070.04012.11
5.3.90.0060.03712.08
5.3.80.0090.03212.08
5.3.70.0060.03712.07
5.3.60.0090.03212.06
5.3.50.0080.03312.00
5.3.40.0050.04012.00
5.3.30.0050.03511.95
5.3.20.0040.03711.72
5.3.10.0060.03411.69
5.3.00.0050.03611.68
5.2.170.0050.0299.18
5.2.160.0060.0279.18
5.2.150.0090.0279.18
5.2.140.0010.0349.17
5.2.130.0050.0289.14
5.2.120.0070.0269.13
5.2.110.0050.0299.14
5.2.100.0040.0289.14
5.2.90.0080.0319.13
5.2.80.0050.0299.13
5.2.70.0020.0329.13
5.2.60.0070.0279.09
5.2.50.0100.0269.06
5.2.40.0050.0289.03
5.2.30.0030.0319.01
5.2.20.0050.0279.00
5.2.10.0050.0278.92
5.2.00.0070.0268.78
5.1.60.0040.0238.06
5.1.50.0030.0258.06
5.1.40.0030.0248.04
5.1.30.0050.0248.39
5.1.20.0060.0248.41
5.1.10.0040.0268.14
5.1.00.0030.0278.13
5.0.50.0060.0216.62
5.0.40.0030.0206.47
5.0.30.0060.0356.29
5.0.20.0050.0176.26
5.0.10.0050.0206.23
5.0.00.0030.0316.23
4.4.90.0020.0164.77
4.4.80.0000.0174.76
4.4.70.0050.0134.75
4.4.60.0040.0154.75
4.4.50.0050.0134.77
4.4.40.0040.0244.71
4.4.30.0030.0144.76
4.4.20.0010.0174.85
4.4.10.0020.0154.85
4.4.00.0040.0224.76
4.3.110.0030.0144.67
4.3.100.0060.0184.67
4.3.90.0010.0164.63
4.3.80.0020.0314.59
4.3.70.0030.0214.63
4.3.60.0030.0144.63
4.3.50.0030.0154.63
4.3.40.0020.0244.54
4.3.30.0020.0183.28
4.3.20.0010.0163.26
4.3.10.0020.0203.22
4.3.00.0070.0276.88

preferences:
41.62 ms | 400 KiB | 5 Q