3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "aaaaaaaaaaaaaaaababababababababa"; while(strpos($Content, "aa") ||strpos($Content, "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)
8.3.60.0070.00718.43
8.3.50.0100.01016.48
8.3.40.0100.01018.83
8.3.30.0110.00719.09
8.3.20.0050.00220.13
8.3.10.0000.00823.70
8.3.00.0040.00419.38
8.2.180.0060.00918.29
8.2.170.0110.01122.96
8.2.160.0100.00720.55
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0000.01426.16
8.2.120.0040.00422.09
8.2.110.0160.00622.29
8.2.100.0060.00617.88
8.2.90.0040.00419.23
8.2.80.0030.00517.97
8.2.70.0040.00417.63
8.2.60.0030.00617.93
8.2.50.0000.00918.07
8.2.40.0040.00418.34
8.2.30.0040.00417.96
8.2.20.0040.00417.77
8.2.10.0030.00618.05
8.2.00.0000.00717.73
8.1.280.0070.00725.92
8.1.270.0000.00921.98
8.1.260.0000.00726.35
8.1.250.0070.00028.09
8.1.240.0100.00723.80
8.1.230.0070.00419.15
8.1.220.0000.00717.79
8.1.210.0080.00018.77
8.1.200.0030.00717.23
8.1.190.0030.00517.23
8.1.180.0040.00418.10
8.1.170.0090.00020.24
8.1.160.0040.00422.07
8.1.150.0020.00518.89
8.1.140.0040.00417.50
8.1.130.0040.00417.86
8.1.120.0030.00317.48
8.1.110.0040.00417.39
8.1.100.0000.00717.36
8.1.90.0030.00617.48
8.1.80.0040.00317.42
8.1.70.0000.00717.37
8.1.60.0030.00617.56
8.1.50.0040.00417.56
8.1.40.0050.00217.43
8.1.30.0040.00417.67
8.1.20.0000.00917.55
8.1.10.0060.00317.52
8.1.00.0040.00417.33
8.0.300.0050.00318.77
8.0.290.0060.00316.75
8.0.280.0030.00318.34
8.0.270.0030.00317.21
8.0.260.0000.00617.16
8.0.250.0000.00716.91
8.0.240.0030.00517.02
8.0.230.0050.00217.00
8.0.220.0070.00016.86
8.0.210.0040.00416.82
8.0.200.0030.00317.00
8.0.190.0030.00316.95
8.0.180.0040.00416.97
8.0.170.0040.00417.03
8.0.160.0040.00416.94
8.0.150.0000.00716.80
8.0.140.0050.00316.89
8.0.130.0000.00613.38
8.0.120.0000.00816.93
8.0.110.0040.00416.80
8.0.100.0040.00417.01
8.0.90.0000.00717.04
8.0.80.0030.01817.00
8.0.70.0040.00416.89
8.0.60.0080.00016.95
8.0.50.0000.00816.98
8.0.30.0090.01217.09
8.0.20.0090.01117.40
8.0.10.0040.00417.06
8.0.00.0070.01016.94
7.4.330.0020.00215.02
7.4.320.0000.00616.53
7.4.300.0030.00316.35
7.4.290.0070.00316.47
7.4.280.0030.00616.60
7.4.270.0000.00616.43
7.4.260.0040.00416.43
7.4.250.0000.00816.60
7.4.240.0030.00416.45
7.4.230.0030.00316.62
7.4.220.0230.00316.51
7.4.210.0060.01016.67
7.4.200.0070.00016.63
7.4.160.0110.00516.48
7.4.150.0120.00617.40
7.4.140.0120.00917.86
7.4.130.0120.01016.48
7.4.120.0110.00616.54
7.4.110.0140.00316.57
7.4.100.0130.00316.51
7.4.90.0090.01616.42
7.4.80.0120.00819.39
7.4.70.0110.00616.59
7.4.60.0130.00316.56
7.4.50.0070.00016.57
7.4.40.0110.00716.34
7.4.30.0090.00916.42
7.4.00.0100.00614.99
7.3.330.0050.00013.18
7.3.320.0000.00513.11
7.3.310.0040.00416.34
7.3.300.0000.00616.29
7.3.290.0080.00916.27
7.3.280.0060.01116.29
7.3.270.0100.00717.40
7.3.260.0100.00716.26
7.3.250.0140.00316.33
7.3.240.0060.01516.41
7.3.230.0060.01216.39
7.3.210.0090.00616.46
7.3.200.0100.00619.39
7.3.190.0120.00616.35
7.3.180.0080.00816.42
7.3.170.0030.01316.30
7.3.160.0110.01116.29
7.3.10.0000.01316.71
7.3.00.0040.00816.59
7.2.330.0030.01416.40
7.2.320.0130.00616.38
7.2.310.0100.00716.31
7.2.300.0150.00016.09
7.2.290.0070.01716.50
7.2.130.0070.00716.71
7.2.120.0000.01616.86
7.2.110.0030.01016.54
7.2.100.0000.00916.72
7.2.90.0080.00416.81
7.2.80.0070.01016.71
7.2.70.0030.01016.80
7.2.60.0060.00616.70
7.2.50.0060.00916.43
7.2.40.0000.01316.98
7.2.30.0040.00816.70
7.2.20.0040.00416.59
7.2.10.0110.00316.74
7.2.00.0080.00518.07
7.1.250.0060.00615.54
7.1.100.0030.01018.18
7.1.70.0080.00317.20
7.1.60.0150.00919.32
7.1.50.0220.01634.86
7.1.00.0030.07722.54
7.0.200.0000.00916.89
7.0.140.0070.07022.09
7.0.60.0030.07720.04
7.0.50.0030.08017.89
7.0.40.0030.09020.09
7.0.30.0200.04320.20
7.0.20.0330.08020.33
7.0.10.0130.06720.02
7.0.00.0030.07720.10
5.6.280.0030.07321.00
5.6.210.0100.07720.47
5.6.200.0100.05718.18
5.6.190.0070.04020.77
5.6.180.0370.07320.27
5.6.170.0370.07020.48
5.6.160.0200.06320.44
5.6.150.0100.04718.19
5.6.140.0070.08018.07
5.6.130.0030.04318.21
5.6.120.0130.03721.01
5.6.110.0100.08021.01
5.6.100.0030.05321.07
5.6.90.0070.07320.97
5.6.80.0030.08320.50
5.5.350.3170.03020.52
5.5.340.0100.07318.02
5.5.330.0070.07720.23
5.5.320.0170.05320.51
5.5.310.0230.08020.30
5.5.300.0100.06317.87
5.5.290.0070.08318.01
5.5.280.0130.07720.88
5.5.270.0030.04320.75
5.5.260.0030.04320.81
5.5.250.0070.08020.68
5.5.240.0100.06020.36
5.4.450.0770.05319.27
5.4.440.0670.06019.63
5.4.430.0800.05019.63
5.4.420.0770.05719.40
5.4.410.0670.06319.11
5.4.400.0070.05719.12
5.4.390.0670.05319.30
5.4.380.0900.05019.25
5.4.370.0930.06319.25
5.4.360.0730.05718.99
5.4.350.0500.05018.95
5.4.340.0060.03511.97
5.4.320.0050.04012.46
5.4.310.0040.03912.45
5.4.300.0070.03812.46
5.4.290.0020.04512.45
5.4.280.0060.03912.35
5.4.270.0070.03412.35
5.4.260.0040.03812.35
5.4.250.0060.03912.35
5.4.240.0080.03612.35
5.4.230.0060.04012.34
5.4.220.0070.04512.34
5.4.210.0120.03412.34
5.4.200.0110.03712.34
5.4.190.0080.03412.34
5.4.180.0060.03612.34
5.4.170.0050.03512.35
5.4.160.0100.04012.34
5.4.150.0060.04412.34
5.4.140.0050.04012.02
5.4.130.0050.03512.02
5.4.120.0050.03511.98
5.4.110.0050.03511.97
5.4.100.0040.03511.96
5.4.90.0090.03511.96
5.4.80.0050.03611.96
5.4.70.0040.03511.96
5.4.60.0060.03411.96
5.4.50.0020.03811.96
5.4.40.0100.03211.95
5.4.30.0060.03511.95
5.4.20.0050.03511.95
5.4.10.0050.04211.95
5.4.00.0050.03611.43
5.3.290.0060.04712.80
5.3.280.0070.04312.71
5.3.270.0070.04012.72
5.3.260.0060.03912.72
5.3.250.0030.04012.71
5.3.240.0090.03512.72
5.3.230.0080.03512.71
5.3.220.0060.03612.68
5.3.210.0060.03912.68
5.3.200.0060.03612.68
5.3.190.0060.03712.68
5.3.180.0090.03412.68
5.3.170.0060.03712.66
5.3.160.0040.03712.67
5.3.150.0080.03412.67
5.3.140.0100.03212.66
5.3.130.0040.04012.66
5.3.120.0070.03712.66
5.3.110.0050.04012.66
5.3.100.0070.03512.12
5.3.90.0050.03712.08
5.3.80.0070.03512.08
5.3.70.0060.04012.08
5.3.60.0060.03512.06
5.3.50.0030.03812.00
5.3.40.0050.03612.00
5.3.30.0060.03511.94
5.3.20.0050.03511.72
5.3.10.0050.03511.69
5.3.00.0040.03711.68
5.2.170.0030.0319.18
5.2.160.0030.0319.18
5.2.150.0060.0299.18
5.2.140.0090.0259.17
5.2.130.0080.0259.13
5.2.120.0050.0279.14
5.2.110.0050.0289.14
5.2.100.0060.0279.14
5.2.90.0030.0309.14
5.2.80.0050.0299.14
5.2.70.0070.0319.14
5.2.60.0040.0409.09
5.2.50.0070.0309.05
5.2.40.0040.0309.03
5.2.30.0040.0309.01
5.2.20.0040.0359.00
5.2.10.0060.0268.91
5.2.00.0060.0288.77
5.1.60.0030.0258.06
5.1.50.0050.0248.05
5.1.40.0030.0258.04
5.1.30.0030.0308.39
5.1.20.0020.0348.41
5.1.10.0040.0298.13
5.1.00.0040.0308.14
5.0.50.0030.0256.62
5.0.40.0020.0216.48
5.0.30.0040.0306.28
5.0.20.0080.0206.26
5.0.10.0050.0186.24
5.0.00.0030.0306.23
4.4.90.0040.0164.78
4.4.80.0040.0164.76
4.4.70.0030.0144.76
4.4.60.0030.0214.75
4.4.50.0020.0204.77
4.4.40.0030.0244.71
4.4.30.0020.0164.75
4.4.20.0060.0144.85
4.4.10.0030.0184.85
4.4.00.0020.0254.76
4.3.110.0030.0224.67
4.3.100.0030.0144.67
4.3.90.0050.0194.63
4.3.80.0030.0284.58
4.3.70.0020.0144.63
4.3.60.0030.0154.63
4.3.50.0030.0174.63
4.3.40.0010.0294.53
4.3.30.0020.0203.28
4.3.20.0010.0163.26
4.3.10.0040.0213.22
4.3.00.0030.0206.88

preferences:
40.66 ms | 400 KiB | 5 Q