3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo strtolower("This is an UTF-8 string, containing ÆØÅ ИЕ and will not be lowered")."\n"; echo mb_strtolower("This is an UTF-8 string, containing ÆØÅ ИЕ and will be lowered");

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)
8.4.20.0200.00020.31
8.4.10.0160.00419.46
8.3.150.0120.00616.98
8.3.140.0080.00016.54
8.3.130.0130.00616.79
8.3.120.0070.00318.71
8.3.110.0050.00320.94
8.3.100.0060.00924.06
8.3.90.0040.00426.77
8.3.80.0030.00616.47
8.3.70.0100.01016.63
8.3.60.0140.00416.50
8.3.50.0110.00921.13
8.3.40.0070.01118.57
8.3.30.0030.01218.54
8.3.20.0110.00719.78
8.3.10.0020.00521.64
8.3.00.0040.00423.60
8.2.270.0110.00716.71
8.2.260.0090.00918.91
8.2.250.0080.00816.71
8.2.240.0030.00617.20
8.2.230.0070.00722.58
8.2.220.0040.00437.54
8.2.210.0120.00926.77
8.2.200.0030.00616.63
8.2.190.0090.00616.58
8.2.180.0000.01525.92
8.2.170.0090.00618.83
8.2.160.0100.00322.96
8.2.150.0080.00425.66
8.2.140.0080.00024.66
8.2.130.0030.00526.16
8.2.120.0070.00020.62
8.2.110.0090.00021.04
8.2.100.0040.00817.58
8.2.90.0070.00018.03
8.2.80.0050.00317.97
8.2.70.0040.00417.93
8.2.60.0030.00619.13
8.2.50.0080.00318.99
8.2.40.0040.00420.47
8.2.30.0040.00417.54
8.2.20.0000.00718.01
8.2.10.0050.00317.81
8.2.00.0000.00718.03
8.1.310.0040.01418.31
8.1.300.0040.00416.22
8.1.290.0000.01218.88
8.1.280.0100.00325.92
8.1.270.0090.00723.84
8.1.260.0080.00326.35
8.1.250.0000.00728.09
8.1.240.0060.00620.64
8.1.230.0050.00520.84
8.1.220.0000.00817.74
8.1.210.0040.00419.03
8.1.200.0100.00017.35
8.1.190.0040.00417.35
8.1.180.0000.00818.10
8.1.170.0000.00818.71
8.1.160.0080.00019.00
8.1.150.0030.00520.23
8.1.140.0000.00819.44
8.1.130.0000.00719.05
8.1.120.0030.00317.35
8.1.110.0000.00917.45
8.1.100.0000.00817.41
8.1.90.0040.00417.34
8.1.80.0000.00917.41
8.1.70.0000.00717.40
8.1.60.0040.00417.58
8.1.50.0040.00417.39
8.1.40.0030.00617.40
8.1.30.0050.00317.65
8.1.20.0040.00417.57
8.1.10.0030.00517.40
8.1.00.0040.00417.48
8.0.300.0040.00420.04
8.0.290.0040.00416.75
8.0.280.0050.00218.30
8.0.270.0050.00418.00
8.0.260.0030.00317.33
8.0.250.0000.00716.97
8.0.240.0040.00417.00
8.0.230.0030.00617.04
8.0.220.0000.00616.94
8.0.210.0000.00816.82
8.0.200.0000.00617.00
8.0.190.0070.00016.88
8.0.180.0000.00816.88
8.0.170.0000.00716.96
8.0.160.0000.00716.95
8.0.150.0050.00516.65
8.0.140.0040.00416.76
8.0.130.0070.00013.27
8.0.120.0050.00316.81
8.0.110.0040.00416.84
8.0.100.0040.00416.91
8.0.90.0050.00316.71
8.0.80.0030.01316.92
8.0.70.0040.00416.94
8.0.60.0000.00816.60
8.0.50.0030.00516.68
8.0.30.0120.00716.96
8.0.20.0080.01117.40
8.0.10.0070.00016.84
8.0.00.0060.01216.80
7.4.330.0000.00515.55
7.4.320.0030.00316.45
7.4.300.0030.00316.55
7.4.290.0020.00516.54
7.4.280.0080.00016.43
7.4.270.0030.00316.52
7.4.260.0000.00716.41
7.4.250.0000.00716.44
7.4.240.0070.00016.50
7.4.230.0070.00016.55
7.4.220.0110.01316.50
7.4.210.0130.00716.47
7.4.200.0030.00516.27
7.4.160.0080.00816.48
7.4.150.0070.01017.40
7.4.140.0080.01117.86
7.4.130.0110.01016.48
7.4.120.0070.01016.50
7.4.110.0000.01916.24
7.4.100.0090.01116.48
7.4.90.0040.01216.46
7.4.80.0120.00619.39
7.4.70.0150.00316.35
7.4.60.0110.00516.38
7.4.50.0070.01016.38
7.4.40.0040.01416.56
7.4.30.0110.00716.60
7.4.00.0080.00415.11
7.3.330.0000.00513.10
7.3.320.0030.00313.05
7.3.310.0070.00016.37
7.3.300.0000.00616.36
7.3.290.0030.00316.18
7.3.280.0080.00916.27
7.3.270.0150.00617.40
7.3.260.0120.00616.35
7.3.250.0110.00616.22
7.3.240.0040.01216.31
7.3.230.0100.00616.20
7.3.210.0130.01016.46
7.3.200.0130.00316.44
7.3.190.0120.00916.42
7.3.180.0100.00716.25
7.3.170.0070.01316.56
7.3.160.0130.00316.18
7.3.100.0090.00914.70
7.3.90.0060.00914.82
7.3.80.0080.00614.64
7.3.70.0090.00614.59
7.3.60.0090.00614.68
7.3.50.0000.01614.64
7.3.40.0130.00614.60
7.3.30.0090.00614.87
7.3.20.0080.01214.62
7.3.10.0070.00715.56
7.3.00.0090.00615.47
7.2.330.0090.00916.62
7.2.320.0120.00616.62
7.2.310.0060.01516.34
7.2.300.0160.01016.65
7.2.290.0040.01416.49
7.2.230.0030.01714.93
7.2.220.0140.00015.15
7.2.210.0030.01614.83
7.2.200.0030.01314.82
7.2.190.0080.00815.05
7.2.180.0110.00414.98
7.2.170.0070.00714.96
7.2.160.0110.00314.89
7.2.150.0090.00615.08
7.2.140.0060.01015.11
7.2.130.0070.00715.83
7.2.120.0050.01115.83
7.2.110.0110.00515.88
7.2.100.0060.01015.87
7.2.90.0070.00815.87
7.2.80.0120.00315.93
7.2.70.0070.01215.88
7.2.60.0610.00815.53
7.2.50.0750.00715.60
7.2.40.0680.00615.78
7.2.30.0890.01015.78
7.2.20.0080.01115.81
7.2.10.0710.00415.58
7.2.00.0490.00716.65
7.1.320.0100.00413.62
7.1.310.0070.00814.22
7.1.300.0090.00913.83
7.1.290.0140.00013.82
7.1.280.0110.00413.88
7.1.270.0050.00813.60
7.1.260.0120.00313.76
7.1.250.0060.00714.87
7.1.240.0120.00613.62
7.1.230.0040.01513.84
7.1.220.0100.01313.88
7.1.210.0150.00613.86
7.1.200.0080.00914.95
7.1.190.0100.00913.68
7.1.180.0130.00813.44
7.1.170.1270.00713.51
7.1.160.0970.01015.08
7.1.150.0140.00615.26
7.1.140.0430.00915.37
7.1.130.0140.00915.24
7.1.120.0640.01216.40
7.1.110.0640.01116.00
7.1.100.0710.00715.24
7.1.90.0730.00716.07
7.1.80.0780.00516.09
7.1.70.0100.00715.37
7.1.60.0150.00924.83
7.1.50.0860.01126.90
7.1.40.0190.00826.80
7.1.30.0750.00926.95
7.1.20.0600.02130.21
7.1.10.0490.01916.67
7.1.00.0030.02516.93
7.0.330.0140.00313.50
7.0.320.0100.00713.23
7.0.310.0140.00913.21
7.0.300.1220.00813.39
7.0.290.0140.00914.96
7.0.280.0000.02013.64
7.0.270.0170.00614.78
7.0.260.0330.00516.09
7.0.250.0730.00715.09
7.0.240.0080.01015.58
7.0.230.0850.00815.67
7.0.220.0730.00715.08
7.0.210.0450.00814.18
7.0.200.0600.00714.84
7.0.190.0130.00514.76
7.0.180.0270.01214.59
7.0.170.0820.00714.59
7.0.160.0470.02316.40
7.0.150.0510.02516.34
7.0.140.0090.01916.48
7.0.130.0630.02116.52
7.0.120.0500.01816.55
7.0.110.0510.02616.44
7.0.100.0430.01816.43
7.0.90.0170.02016.51
7.0.80.0490.02016.45
7.0.70.0520.02116.58
7.0.60.0540.02116.34
7.0.50.0110.01916.54
7.0.40.0530.02116.68
7.0.30.0080.02216.50
7.0.20.0100.02416.63
7.0.10.0650.01816.59
7.0.00.0670.02316.56
5.6.400.0040.01114.10
5.6.390.0090.00913.99
5.6.380.0150.01114.13
5.6.370.0140.00414.03
5.6.360.0110.01114.00
5.6.350.0150.00814.04
5.6.340.0160.00814.09
5.6.330.0130.01013.80
5.6.320.0110.00514.19
5.6.310.0030.01413.99
5.6.300.0110.04119.10
5.6.290.0120.04119.02
5.6.280.0140.04319.12
5.6.270.0150.04719.23
5.6.260.0110.04419.03
5.6.250.0140.04219.10
5.6.240.0140.04619.09
5.6.230.0130.04019.09
5.6.220.0080.04419.05
5.6.210.0100.04519.15
5.6.200.0140.04419.03
5.6.190.0160.04719.10
5.6.180.0110.04419.04
5.6.170.0130.04319.15
5.6.160.0120.04319.13
5.6.150.0150.04419.12
5.6.140.0110.04319.23
5.6.130.0050.05119.24
5.6.120.0130.04519.19
5.6.110.0110.04719.03
5.6.100.0160.04819.11
5.6.90.0150.04018.97
5.6.80.0090.04318.75
5.6.70.0130.03918.71
5.6.60.0120.04018.65
5.6.50.0080.05218.66
5.6.40.0160.03418.60
5.6.30.0120.04918.47
5.6.20.0110.04618.57
5.6.10.0120.04018.60
5.6.00.0100.04318.65
5.5.380.0140.03315.77
5.5.370.0130.03115.92
5.5.360.0150.03415.68
5.5.350.0130.03915.80
5.5.340.0170.02915.81
5.5.330.0150.03216.03
5.5.320.0150.03116.08
5.5.310.0170.03816.00
5.5.300.0170.03015.92
5.5.290.0150.03716.17
5.5.280.0140.03315.84
5.5.270.0160.03315.91
5.5.260.0170.03016.00
5.5.250.0170.03416.01
5.5.240.0150.02915.59
5.5.230.0090.03715.66
5.5.220.0180.02515.82
5.5.210.0110.03215.83
5.5.200.0080.03215.78
5.5.190.0120.03015.86
5.5.180.0150.02815.73
5.5.170.0110.00614.14
5.5.160.0110.02915.84
5.5.150.0120.03315.79
5.5.140.0140.03115.66
5.5.130.0190.02615.53
5.5.120.0160.02715.64
5.5.110.0100.03915.67
5.5.100.0120.02915.45
5.5.90.0160.02515.62
5.5.80.0100.03815.79
5.5.70.0140.02815.48
5.5.60.0120.02815.54
5.5.50.0150.02915.60
5.5.40.0120.03815.77
5.5.30.0120.03815.46
5.5.20.0120.03215.48
5.5.10.0070.03515.75
5.5.00.0090.03115.55
5.4.450.0110.03515.22
5.4.440.0130.03415.24
5.4.430.0140.02915.12
5.4.420.0140.03015.24
5.4.410.0130.03415.15
5.4.400.0150.02714.81
5.4.390.0140.03114.96
5.4.380.0110.03315.08
5.4.370.0160.02714.88
5.4.360.0150.03014.79
5.4.350.0130.02714.86
5.4.340.0130.03514.94
5.4.330.0140.00410.68
5.4.320.0110.03614.96
5.4.310.0100.03014.87
5.4.300.0070.03514.92
5.4.290.0100.03114.90
5.4.280.0150.02914.94
5.4.270.0120.03415.08
5.4.260.0120.02815.02
5.4.250.0150.02614.84
5.4.240.0130.02914.93
5.4.230.0100.03114.88
5.4.220.0100.03114.81
5.4.210.0120.03914.87
5.4.200.0080.03214.82
5.4.190.0140.02514.96
5.4.180.0090.02915.06
5.4.170.0110.03014.96
5.4.160.0110.02914.76
5.4.150.0160.03015.02
5.4.140.0150.02713.62
5.4.130.0100.02613.57
5.4.120.0120.02513.71
5.4.110.0120.02813.78
5.4.100.0110.02913.52
5.4.90.0140.02613.61
5.4.80.0140.02513.78
5.4.70.0120.02613.71
5.4.60.0110.03013.59
5.4.50.0050.03113.67
5.4.40.0130.03113.70
5.4.30.0120.02913.65
5.4.20.0120.03013.62
5.4.10.0100.03013.69
5.4.00.0160.02613.33
5.3.290.0150.03612.51
5.3.280.0120.02612.46
5.3.270.0070.03212.40
5.3.260.0110.02812.48
5.3.250.0100.02812.43
5.3.240.0090.02812.41
5.3.230.0090.02812.51
5.3.220.0140.02612.55
5.3.210.0090.02912.39
5.3.200.0130.02712.36
5.3.190.0130.02612.41
5.3.180.0110.02612.36
5.3.170.0150.02312.56
5.3.160.0110.03212.54
5.3.150.0160.02612.41
5.3.140.0120.03312.38
5.3.130.0110.03212.27
5.3.120.0110.03012.52
5.3.110.0140.02812.55
5.3.100.0120.02912.29
5.3.90.0110.02812.17
5.3.80.0080.03112.09
5.3.70.0150.02512.19
5.3.60.0070.03312.15
5.3.50.0120.02512.14
5.3.40.0120.02812.05
5.3.30.0110.02712.15
5.3.20.0130.02511.97
5.3.10.0110.02711.94
5.3.00.0200.02911.89
5.2.170.0090.02510.72
5.2.160.0110.02310.64
5.2.150.0090.02710.62
5.2.140.0120.01910.65
5.2.130.0120.02110.70
5.2.120.0100.02210.66
5.2.110.0100.02410.75
5.2.100.0130.02510.74
5.2.90.0070.02610.54
5.2.80.0100.03110.70
5.2.70.0050.02610.68
5.2.60.0080.02310.57
5.2.50.0090.02310.67
5.2.40.0090.02310.55
5.2.30.0090.02310.60
5.2.20.0080.02310.63
5.2.10.0120.02010.57
5.2.00.0110.02110.44
5.1.60.0100.01710.15
5.1.50.0060.02010.07
5.1.40.0060.02110.23
5.1.30.0100.02510.31
5.1.20.0090.01910.18
5.1.10.0080.01810.27
5.1.00.0060.02110.21
5.0.50.0060.0199.43
5.0.40.0080.0199.40
5.0.30.0100.0209.24
5.0.20.0070.0159.25
5.0.10.0090.0199.24
5.0.00.0100.0209.27
4.4.90.0070.0119.24
4.4.80.0040.0199.24
4.4.70.0070.0109.24
4.4.60.0040.0149.24
4.4.50.0050.0139.24
4.4.40.0080.0179.24
4.4.30.0040.0149.24
4.4.20.0050.0119.24
4.4.10.0070.0109.24
4.4.00.0050.0229.24
4.3.110.0070.0129.24
4.3.100.0070.0109.24
4.3.90.0090.0099.24
4.3.80.0030.0219.24
4.3.70.0030.0139.24
4.3.60.0040.0119.24
4.3.50.0050.0129.24
4.3.40.0050.0219.24
4.3.30.0040.0159.24
4.3.20.0080.0129.24
4.3.10.0020.0159.24
4.3.00.0050.0139.24

preferences:
30.26 ms | 403 KiB | 5 Q