3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'abcdefaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'; $str2 = '山本山本本山本山本本山本山本本山本山本本山本山本本山本山本本'; echo strlen($str); // 7 echo mb_strlen($str2, "UTF-8"); // 6 ?>

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)
8.3.60.0070.01018.28
8.3.50.0130.00621.02
8.3.40.0070.00718.49
8.3.30.0070.01020.09
8.3.20.0030.00720.21
8.3.10.0060.00321.93
8.3.00.0000.00722.42
8.2.180.0070.00716.60
8.2.170.0040.01122.96
8.2.160.0130.00022.13
8.2.150.0000.00724.18
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0040.00420.80
8.2.110.0030.00919.39
8.2.100.0090.00317.88
8.2.90.0030.00619.23
8.2.80.0000.00817.97
8.2.70.0000.00817.63
8.2.60.0040.00417.93
8.2.50.0060.00318.07
8.2.40.0080.00018.03
8.2.30.0080.00019.47
8.2.20.0030.00617.55
8.2.10.0000.00817.52
8.2.00.0040.00417.48
8.1.280.0130.00725.92
8.1.270.0050.00323.99
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0090.00021.24
8.1.230.0040.00817.42
8.1.220.0030.00617.74
8.1.210.0040.00418.77
8.1.200.0070.00317.11
8.1.190.0000.00817.10
8.1.180.0060.00318.10
8.1.170.0000.00818.42
8.1.160.0070.00018.69
8.1.150.0040.00418.57
8.1.140.0000.00717.38
8.1.130.0000.00717.73
8.1.120.0040.00417.38
8.1.110.0070.00017.38
8.1.100.0030.00317.34
8.1.90.0000.00717.44
8.1.80.0040.00417.27
8.1.70.0000.00717.28
8.1.60.0030.00617.60
8.1.50.0040.00817.44
8.1.40.0080.00017.48
8.1.30.0040.00417.61
8.1.20.0030.00517.54
8.1.10.0000.00817.59
8.1.00.0030.00617.51
8.0.300.0050.00318.77
8.0.290.0040.00416.63
8.0.280.0030.00318.48
8.0.270.0080.00017.25
8.0.260.0040.00416.75
8.0.250.0000.00717.00
8.0.240.0050.00317.00
8.0.230.0050.00216.96
8.0.220.0050.00216.77
8.0.210.0000.00716.81
8.0.200.0000.00616.96
8.0.190.0070.00016.94
8.0.180.0000.00716.92
8.0.170.0000.00816.92
8.0.160.0030.00316.82
8.0.150.0040.00316.83
8.0.140.0000.00716.81
8.0.130.0000.00613.24
8.0.120.0000.00716.83
8.0.110.0000.00816.92
8.0.100.0050.00316.78
8.0.90.0040.00416.84
8.0.80.0070.01016.92
8.0.70.0040.00416.70
8.0.60.0000.00816.68
8.0.50.0000.00716.75
8.0.30.0110.00917.18
8.0.20.0090.00817.40
8.0.10.0080.00016.81
8.0.00.0080.01316.77
7.4.330.0000.00516.82
7.4.320.0000.00616.51
7.4.300.0060.00016.53
7.4.290.0000.00716.44
7.4.280.0000.00716.41
7.4.270.0000.00616.43
7.4.260.0060.00013.09
7.4.250.0000.00816.38
7.4.240.0050.00216.54
7.4.230.0030.00316.41
7.4.220.0060.01516.55
7.4.210.0080.00716.46
7.4.200.0080.00016.63
7.4.190.0040.00416.29
7.4.160.0060.01016.54
7.4.150.0100.00717.40
7.4.140.0110.00817.86
7.4.130.0050.01116.38
7.4.120.0080.01016.46
7.4.110.0100.00716.32
7.4.100.0090.00816.55
7.4.90.0100.00716.45
7.4.80.0100.01019.39
7.4.70.0060.01016.60
7.4.60.0150.00316.49
7.4.50.0020.00216.57
7.4.40.0070.01022.77
7.4.30.0090.00916.47
7.4.00.0030.01215.04
7.3.330.0050.00013.08
7.3.320.0050.00013.10
7.3.310.0000.00716.34
7.3.300.0040.00416.19
7.3.290.0130.00716.30
7.3.280.0090.00616.20
7.3.270.0170.00317.40
7.3.260.0140.01116.41
7.3.250.0070.01016.40
7.3.240.0100.00716.28
7.3.230.0080.00816.57
7.3.210.0030.01316.22
7.3.200.0080.00819.39
7.3.190.0090.01316.28
7.3.180.0120.00416.56
7.3.170.0090.01216.33
7.3.160.0110.00516.11
7.3.120.0100.00314.70
7.3.10.0080.00616.61
7.3.00.0000.01616.71
7.2.330.0100.00616.68
7.2.320.0070.01116.20
7.2.310.0070.01016.30
7.2.300.0090.00616.54
7.2.290.0070.01016.51
7.2.130.0070.01016.53
7.2.120.0060.00616.89
7.2.110.0110.00316.81
7.2.100.0080.01116.79
7.2.90.0070.01016.82
7.2.80.0070.00816.76
7.2.70.0030.01016.77
7.2.60.0110.00416.73
7.2.50.0100.00316.58
7.2.40.0090.00617.02
7.2.30.0110.00317.00
7.2.20.0090.00616.55
7.2.10.0110.00016.91
7.2.00.0070.00717.88
7.1.250.0100.00315.95
7.1.100.0000.01218.34
7.1.70.0030.00717.26
7.1.60.0110.01119.21
7.1.50.0100.01417.09
7.1.00.0000.08022.36
7.0.200.0050.00216.82
7.0.140.0030.07722.07
7.0.100.0200.07320.05
7.0.90.0500.06719.97
7.0.80.0130.07320.03
7.0.70.0100.07720.01
7.0.60.0200.08320.04
7.0.50.0130.05720.27
7.0.40.0030.05020.09
7.0.30.0200.07320.16
7.0.20.0100.08320.09
7.0.10.0100.08020.05
7.0.00.0070.06320.09
5.6.280.0070.07021.06
5.6.250.0130.07720.55
5.6.240.0070.06320.63
5.6.230.0070.07020.59
5.6.220.0100.08020.57
5.6.210.0030.08320.48
5.6.200.0100.08021.09
5.6.190.0030.09021.06
5.6.180.0000.08721.02
5.6.170.0070.06020.92
5.6.160.0100.08021.00
5.6.150.0030.08020.93
5.6.140.0100.08321.09
5.6.130.0170.07020.96
5.6.120.0170.08720.86
5.6.110.0070.05320.96
5.6.100.0200.04321.05
5.6.90.0130.08020.97
5.6.80.0130.07320.25
5.6.70.0030.08020.37
5.6.60.0200.07020.37
5.6.50.0100.08020.43
5.6.40.0130.07720.42
5.6.30.0100.06720.40
5.6.20.0030.08320.38
5.6.10.0070.07720.40
5.6.00.0070.08720.49
5.5.380.0100.08320.38
5.5.370.0070.08320.38
5.5.360.0130.05720.48
5.5.350.0030.07320.32
5.5.340.0130.08320.84
5.5.330.0000.06020.82
5.5.320.0070.08020.81
5.5.310.0070.08720.91
5.5.300.0100.06720.90
5.5.290.0170.04320.74
5.5.280.0030.08320.89
5.5.270.0030.05320.83
5.5.260.0030.05020.75
5.5.250.0030.08720.72
5.5.240.0070.04720.20
5.5.230.0170.07320.09
5.5.220.0070.07020.18
5.5.210.0070.08020.13
5.5.200.0100.07320.06
5.5.190.0100.06320.20
5.5.180.0100.07720.09
5.5.160.0070.07020.20
5.5.150.0070.04720.06
5.5.140.0070.04020.04
5.5.130.0100.06720.21
5.5.120.0130.06320.18
5.5.110.0070.05020.10
5.5.100.0100.07720.05
5.5.90.0170.03320.08
5.5.80.0100.07720.06
5.5.70.0070.08020.12
5.5.60.0100.07020.04
5.5.50.0070.08020.04
5.5.40.0070.07320.04
5.5.30.0130.07320.02
5.5.20.0100.07720.02
5.5.10.0030.08319.98
5.5.00.0200.07720.08
5.4.450.0000.07719.23
5.4.440.0200.07319.52
5.4.430.0070.07719.46
5.4.420.0070.07719.36
5.4.410.0070.07019.23
5.4.400.0030.04719.04
5.4.390.0100.06318.78
5.4.380.0000.08018.98
5.4.370.0130.05719.05
5.4.360.0130.07319.13
5.4.350.0030.04019.07
5.4.340.0070.07318.81
5.4.320.0100.07019.03
5.4.310.0130.06719.07
5.4.300.0070.07319.02
5.4.290.0130.05019.02
5.4.280.0130.05718.97
5.4.270.0100.06719.05
5.4.260.0030.07319.22
5.4.250.0130.05018.96
5.4.240.0130.03718.95
5.4.230.0070.07718.89
5.4.220.0130.07319.11
5.4.210.0030.08018.97
5.4.200.0030.07718.77
5.4.190.0070.07019.02
5.4.180.0030.04719.11
5.4.170.0170.05718.93
5.4.160.0100.04319.07
5.4.150.0030.05319.12
5.4.140.0070.07716.04
5.4.130.0070.06716.24
5.4.120.0070.04316.32
5.4.110.0000.05316.42
5.4.100.0130.06016.44
5.4.90.0070.06016.26
5.4.80.0070.07316.19
5.4.70.0000.06316.47
5.4.60.0070.07016.27
5.4.50.0030.05316.37
5.4.40.0130.06016.24
5.4.30.0070.06016.19
5.4.20.0030.03716.20
5.4.10.0030.05016.19
5.4.00.0100.04015.62
5.3.290.0130.07014.47
5.3.280.0070.08714.57
5.3.270.0200.06014.59
5.3.260.0100.07714.59
5.3.250.0200.06314.56
5.3.240.0030.06314.41
5.3.230.0100.06714.50
5.3.220.0130.07714.47
5.3.210.0200.03014.55
5.3.200.0070.05014.56
5.3.190.0100.03714.54
5.3.180.0100.04014.39
5.3.170.0030.04014.55
5.3.160.0100.06714.55
5.3.150.0030.08014.41
5.3.140.0070.04014.51
5.3.130.0030.07714.45
5.3.120.0070.04314.45
5.3.110.0100.07314.54
5.3.100.0130.06714.02
5.3.90.0100.04313.85
5.3.80.0030.03713.77
5.3.70.0070.03314.01
5.3.60.0030.07713.86
5.3.50.0100.04013.80
5.3.40.0070.06013.92
5.3.30.0030.04713.68
5.3.20.0000.04313.68
5.3.10.0100.07013.52
5.3.00.0070.03313.63
5.2.170.0100.05011.21
5.2.160.0030.06010.98
5.2.150.0070.06011.13
5.2.140.0070.05011.14
5.2.130.0030.03310.91
5.2.120.0070.05311.14
5.2.110.0070.05710.89
5.2.100.0100.05311.09
5.2.90.0100.03311.09
5.2.80.0000.03711.05
5.2.70.0070.06011.14
5.2.60.0000.06011.01
5.2.50.0000.04010.88
5.2.40.0070.05711.07
5.2.30.0030.06011.02
5.2.20.0030.03710.91
5.2.10.0000.03310.96
5.2.00.0100.03710.65
5.1.60.0100.05010.08
5.1.50.0030.0539.98
5.1.40.0000.0379.96
5.1.30.0030.06010.32
5.1.20.0030.05310.48
5.1.10.0070.05310.13
5.1.00.0070.05310.06
5.0.50.0130.0308.62
5.0.40.0070.0208.48
5.0.30.0100.0578.32
5.0.20.0070.0338.32
5.0.10.0100.0378.32
5.0.00.0000.0338.32
4.4.90.0100.0108.32
4.4.80.0000.0338.32
4.4.70.0000.0338.32
4.4.60.0000.0378.32
4.4.50.0000.0308.32
4.4.40.0030.0378.32
4.4.30.0070.0278.32
4.4.20.0000.0308.32
4.4.10.0030.0338.32
4.4.00.0030.0408.32
4.3.110.0000.0338.32
4.3.100.0070.0308.32
4.3.90.0030.0338.32
4.3.80.0000.0278.32
4.3.70.0030.0308.32
4.3.60.0070.0308.32
4.3.50.0070.0308.32
4.3.40.0000.0508.32
4.3.30.0070.0308.32
4.3.20.0030.0378.32
4.3.10.0000.0378.32
4.3.00.0000.0438.32

preferences:
40.87 ms | 401 KiB | 5 Q