3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "aaaaaaaaaaaaaaaababababababababa"; while(str_pos($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)
8.3.40.0170.00318.84
8.3.30.0100.00319.22
8.3.20.0050.00220.29
8.3.10.0000.00723.61
8.3.00.0080.00019.25
8.2.170.0140.00722.96
8.2.160.0110.00720.37
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0070.00726.16
8.2.120.0040.00422.13
8.2.110.0070.00322.29
8.2.100.0080.00417.50
8.2.90.0000.00919.22
8.2.80.0040.00417.97
8.2.70.0060.00617.63
8.2.60.0000.00817.80
8.2.50.0070.00418.07
8.2.40.0030.00519.88
8.2.30.0040.00417.87
8.2.20.0040.00417.55
8.2.10.0040.00418.11
8.2.00.0040.00417.80
8.1.270.0060.00323.96
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0060.00323.92
8.1.230.0090.00317.42
8.1.220.0030.00617.74
8.1.210.0030.00718.77
8.1.200.0000.00817.10
8.1.190.0040.00417.23
8.1.180.0040.00418.10
8.1.170.0000.00818.59
8.1.160.0040.00421.95
8.1.150.0080.00018.73
8.1.140.0050.00217.29
8.1.130.0030.00317.78
8.1.120.0040.00417.29
8.1.110.0070.00017.34
8.1.100.0000.00717.36
8.1.90.0070.00017.41
8.1.80.0040.00417.34
8.1.70.0000.00717.33
8.1.60.0000.00817.40
8.1.50.0030.00617.55
8.1.40.0000.00717.46
8.1.30.0040.00417.62
8.1.20.0000.00717.49
8.1.10.0000.00717.58
8.1.00.0080.00017.36
8.0.300.0070.00018.77
8.0.290.0050.00216.75
8.0.280.0000.00718.38
8.0.270.0070.00017.26
8.0.260.0000.00617.14
8.0.250.0030.00316.86
8.0.240.0040.00416.96
8.0.230.0030.00316.93
8.0.220.0070.00016.78
8.0.210.0000.00716.93
8.0.200.0030.00316.84
8.0.190.0040.00416.86
8.0.180.0040.00416.93
8.0.170.0070.00016.81
8.0.160.0000.00816.80
8.0.150.0000.00816.85
8.0.140.0000.00716.78
8.0.130.0030.00313.36
8.0.120.0000.00816.77
8.0.110.0000.00716.92
8.0.100.0040.00416.75
8.0.90.0040.00416.76
8.0.80.0080.00816.85
8.0.70.0050.00216.71
8.0.60.0000.00816.84
8.0.50.0030.00516.82
8.0.30.0100.01217.17
8.0.20.0110.01017.40
8.0.10.0050.00316.87
8.0.00.0110.00916.83
7.4.330.0000.00515.04
7.4.320.0000.00716.54
7.4.300.0030.00316.62
7.4.290.0030.00616.58
7.4.280.0070.00416.58
7.4.270.0000.00716.62
7.4.260.0030.00316.54
7.4.250.0000.00716.48
7.4.240.0040.00316.61
7.4.230.0000.00716.70
7.4.220.0100.01016.44
7.4.210.0030.02016.46
7.4.200.0000.00716.40
7.4.160.0040.01116.47
7.4.150.0110.00617.40
7.4.140.0100.00917.86
7.4.130.0100.00716.49
7.4.120.0040.01416.41
7.4.110.0060.01616.57
7.4.100.0040.01216.62
7.4.90.0130.00316.62
7.4.80.0060.01719.39
7.4.70.0110.00816.50
7.4.60.0140.00616.57
7.4.50.0050.00016.39
7.4.40.0060.01016.20
7.4.30.0090.00916.55
7.4.00.0030.01315.22
7.3.330.0020.00213.00
7.3.320.0050.00013.02
7.3.310.0040.00416.19
7.3.300.0030.00316.28
7.3.290.0080.00816.26
7.3.280.0070.00916.26
7.3.270.0100.00717.40
7.3.260.0060.01116.31
7.3.250.0090.00816.36
7.3.240.0030.01416.48
7.3.230.0040.01216.39
7.3.210.0190.00316.38
7.3.200.0080.00819.39
7.3.190.0100.00616.41
7.3.180.0060.00916.42
7.3.170.0150.00616.29
7.3.160.0060.01516.48
7.2.330.0110.01116.34
7.2.320.0090.00916.48
7.2.310.0060.00916.50
7.2.300.0080.00816.51
7.2.290.0140.00316.31
7.2.110.0300.00016.32
7.2.80.0260.00716.11
7.2.60.0070.01016.80
7.2.00.0000.01519.15
7.1.200.0040.00815.45
7.1.100.0040.01117.65
7.1.70.0030.00517.04
7.1.60.0100.01419.32
7.1.50.0080.00816.78
7.1.00.0030.07722.35
7.0.200.0000.00716.69
7.0.140.0000.07322.10
7.0.60.0130.06719.86
7.0.50.0130.07017.68
7.0.40.0070.09020.04
7.0.30.0500.07720.13
7.0.20.0330.07020.00
7.0.10.0070.04720.18
7.0.00.0070.06020.03
5.6.280.0070.07020.89
5.6.210.0100.07020.61
5.6.200.0130.07718.13
5.6.190.0130.07720.57
5.6.180.0200.05020.39
5.6.170.0330.06720.48
5.6.160.0030.08720.32
5.6.150.0030.04018.14
5.6.140.0130.08018.18
5.6.130.0070.07018.18
5.6.120.0030.08021.00
5.6.110.0100.08021.09
5.6.100.0070.08720.98
5.6.90.0030.08021.09
5.6.80.0130.07320.28
5.6.70.4400.03720.50
5.5.350.0430.06720.46
5.5.340.0170.06318.00
5.5.330.0030.04020.21
5.5.320.0370.07720.13
5.5.310.0270.06320.35
5.5.300.0070.08018.00
5.5.290.0130.05317.95
5.5.280.0130.07720.87
5.5.270.0000.09020.84
5.5.260.0070.09020.64
5.5.250.0030.07720.57
5.5.240.3700.04720.27
5.4.450.0730.04719.48
5.4.440.0630.06319.45
5.4.430.0900.04719.10
5.4.420.0730.06019.14
5.4.410.0530.05319.19
5.4.400.0830.04319.07
5.4.390.0970.07019.12
5.4.380.0700.05718.99
5.4.370.0230.04719.26
5.4.360.0870.06319.15
5.4.350.0530.06319.16
5.4.340.0060.03411.97
5.4.320.0100.03912.45
5.4.310.0070.04212.45
5.4.300.0070.03612.46
5.4.290.0090.04712.45
5.4.280.0080.03912.35
5.4.270.0050.03712.35
5.4.260.0020.04312.35
5.4.250.0080.03512.35
5.4.240.0070.03512.35
5.4.230.0070.04312.34
5.4.220.0080.03912.34
5.4.210.0080.03312.34
5.4.200.0050.03812.34
5.4.190.0070.04512.34
5.4.180.0060.04012.34
5.4.170.0080.03412.35
5.4.160.0070.03812.35
5.4.150.0080.03612.34
5.4.140.0060.03612.03
5.4.130.0070.03912.02
5.4.120.0060.03611.97
5.4.110.0050.04111.97
5.4.100.0070.03311.97
5.4.90.0080.03511.96
5.4.80.0060.03911.96
5.4.70.0080.03611.96
5.4.60.0060.03511.96
5.4.50.0080.03411.96
5.4.40.0050.03811.95
5.4.30.0070.03711.95
5.4.20.0070.03911.95
5.4.10.0100.03711.95
5.4.00.0050.04311.44
5.3.290.0090.03612.80
5.3.280.0040.04212.71
5.3.270.0070.04112.72
5.3.260.0080.03912.72
5.3.250.0080.04412.72
5.3.240.0050.04112.72
5.3.230.0040.03912.71
5.3.220.0080.03812.68
5.3.210.0090.03812.68
5.3.200.0060.03712.68
5.3.190.0050.03812.67
5.3.180.0080.04012.67
5.3.170.0060.03812.67
5.3.160.0080.04112.67
5.3.150.0070.03612.68
5.3.140.0100.04112.66
5.3.130.0070.03812.66
5.3.120.0050.03912.66
5.3.110.0070.03712.66
5.3.100.0060.04412.12
5.3.90.0060.03712.08
5.3.80.0050.03712.07
5.3.70.0090.03312.08
5.3.60.0060.03712.07
5.3.50.0060.03812.00
5.3.40.0080.03512.00
5.3.30.0070.03311.95
5.3.20.0070.03811.72
5.3.10.0050.03711.70
5.3.00.0070.03511.68
5.2.170.0080.0469.18
5.2.160.0050.0289.18
5.2.150.0050.0299.18
5.2.140.0050.0299.18
5.2.130.0040.0309.14
5.2.120.0040.0289.14
5.2.110.0030.0309.14
5.2.100.0090.0239.14
5.2.90.0060.0299.14
5.2.80.0060.0289.14
5.2.70.0040.0309.14
5.2.60.0040.0309.09
5.2.50.0050.0299.06
5.2.40.0050.0289.04
5.2.30.0050.0379.02
5.2.20.0070.0259.00
5.2.10.0080.0298.92
5.2.00.0060.0298.78
5.1.60.0070.0208.07
5.1.50.0050.0298.06
5.1.40.0030.0308.04
5.1.30.0050.0248.39
5.1.20.0060.0308.41
5.1.10.0030.0268.14
5.1.00.0050.0328.14
5.0.50.0040.0246.62
5.0.40.0020.0276.48
5.0.30.0010.0326.29
5.0.20.0060.0216.26
5.0.10.0040.0196.24
5.0.00.0030.0356.23
4.4.90.0030.0184.78
4.4.80.0040.0214.75
4.4.70.0050.0184.75
4.4.60.0040.0174.75
4.4.50.0030.0184.77
4.4.40.0030.0244.71
4.4.30.0060.0134.75
4.4.20.0000.0194.84
4.4.10.0030.0184.85
4.4.00.0060.0244.76
4.3.110.0020.0244.67
4.3.100.0030.0144.66
4.3.90.0030.0144.63
4.3.80.0020.0324.58
4.3.70.0040.0204.63
4.3.60.0040.0124.63
4.3.50.0030.0174.62
4.3.40.0030.0234.54
4.3.30.0010.0173.28
4.3.20.0010.0173.26
4.3.10.0030.0253.21
4.3.00.0230.0176.89

preferences:
37.18 ms | 400 KiB | 5 Q