3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(strlen(iconv('utf-8', 'utf-16le', 'A B C')) / 2); # correct var_dump(strlen(iconv('utf-8', 'utf-16le', '🎖')) / 2); # correct var_dump(strlen(mb_convert_encoding('A B C', 'UTF-32BE', 'UTF-8')) / 2); # off by 5 chars var_dump(strlen(mb_convert_encoding('🎖', 'UTF-32BE', 'UTF-8')) / 2); # correct var_dump(mb_strlen(mb_convert_encoding('A B C', 'UTF-32BE', 'UTF-8')) / 2); # off by 5 chars var_dump(mb_strlen(mb_convert_encoding('🎖', 'UTF-32BE', 'UTF-8')) / 2); # correct

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)
8.3.60.0150.00318.48
8.3.50.0130.00016.39
8.3.40.0090.00618.96
8.3.30.0040.01118.71
8.3.20.0080.00019.10
8.3.10.0000.00820.79
8.3.00.0040.00417.91
8.2.180.0110.00718.29
8.2.170.0150.00722.96
8.2.160.0120.00320.77
8.2.150.0050.00324.18
8.2.140.0000.00924.66
8.2.130.0040.00419.73
8.2.120.0000.00726.35
8.2.110.0100.00021.04
8.2.100.0040.00817.91
8.2.90.0060.00317.84
8.2.80.0040.00417.97
8.2.70.0030.00618.03
8.2.60.0050.00317.97
8.2.50.0030.00518.10
8.2.40.0060.00321.02
8.2.30.0000.00719.39
8.2.20.0030.00618.06
8.2.10.0030.00718.06
8.2.00.0000.00819.26
8.1.280.0080.00825.92
8.1.270.0080.00023.75
8.1.260.0070.00026.35
8.1.250.0080.00028.09
8.1.240.0040.00423.92
8.1.230.0080.00320.97
8.1.220.0000.00817.74
8.1.210.0080.00018.84
8.1.200.0040.00417.38
8.1.190.0050.00317.35
8.1.180.0000.00818.10
8.1.170.0030.00618.60
8.1.160.0080.00020.56
8.1.150.0050.00218.75
8.1.140.0040.00417.72
8.1.130.0000.00718.93
8.1.120.0070.00317.43
8.1.110.0040.00417.46
8.1.100.0000.00817.35
8.1.90.0080.00017.47
8.1.80.0040.00417.41
8.1.70.0040.00417.41
8.1.60.0080.00017.46
8.1.50.0030.00617.35
8.1.40.0040.00417.52
8.1.30.0000.01017.61
8.1.20.0060.00317.62
8.1.10.0000.00817.54
8.1.00.0030.00617.48
8.0.300.0080.00019.68
8.0.290.0050.00316.75
8.0.280.0000.00718.50
8.0.270.0030.00317.16
8.0.260.0030.00319.01
8.0.250.0000.00717.04
8.0.240.0050.00316.93
8.0.230.0030.00317.01
8.0.220.0000.00716.92
8.0.210.0000.00716.98
8.0.200.0080.00016.97
8.0.190.0000.00716.83
8.0.180.0000.00716.82
8.0.170.0000.00816.96
8.0.160.0000.00716.94
8.0.150.0110.00016.88
8.0.140.0030.00416.82
8.0.130.0000.00613.38
8.0.120.0040.00416.90
8.0.110.0040.00417.00
8.0.100.0030.00616.80
8.0.90.0060.00317.05
8.0.80.0110.01016.96
8.0.70.0030.00616.97
8.0.60.0030.00617.08
8.0.50.0030.00617.12
8.0.30.0110.00917.13
8.0.20.0100.01017.43
8.0.10.0000.00817.11
8.0.00.0130.00917.01
7.4.330.0030.00315.55
7.4.320.0000.00616.60
7.4.300.0000.00716.46
7.4.290.0050.00316.56
7.4.280.0000.00716.44
7.4.270.0070.00016.46
7.4.260.0030.00516.55
7.4.250.0030.00616.71
7.4.240.0030.00616.63
7.4.230.0030.00516.53
7.4.220.0060.00316.82
7.4.210.0080.01116.71
7.4.200.0000.00816.80
7.4.160.0080.01116.51
7.4.140.0120.00817.86
7.4.130.0070.01316.66
7.4.120.0090.01216.67
7.4.110.0090.00916.71
7.4.100.0040.01616.52
7.4.90.0130.00616.52
7.4.80.0060.01219.39
7.4.70.0140.00816.62
7.4.60.0100.01316.53
7.4.50.0070.01216.40
7.4.40.0100.01716.55
7.4.30.0160.01216.46
7.4.20.0070.01416.43
7.4.10.0100.01016.36
7.4.00.0100.00815.67
7.3.330.0000.00513.01
7.3.320.0040.00413.08
7.3.310.0080.00016.59
7.3.300.0050.00316.44
7.3.290.0060.00316.44
7.3.280.0070.01116.48
7.3.260.0070.01216.46
7.3.240.0090.01216.52
7.3.230.0100.01016.46
7.3.210.0170.01016.38
7.3.200.0110.01116.77
7.3.190.0080.01516.45
7.3.180.0070.01116.41
7.3.170.0100.01616.38
7.3.160.0080.01516.52
7.3.150.0110.01116.28
7.3.140.0150.00416.56
7.3.130.0070.01016.51
7.3.120.0060.01516.43
7.3.110.0030.01616.24
7.3.100.0070.01416.38
7.3.90.0140.00616.28
7.3.80.0130.00616.30
7.3.70.0090.01316.41
7.3.60.0130.00716.32
7.3.50.0080.01116.36
7.3.40.0330.01216.17
7.3.30.0090.00916.36
7.3.20.0060.01516.34
7.3.10.0090.01316.39
7.3.00.0100.01016.29
7.2.330.0180.00316.65
7.2.320.0120.01216.74
7.2.310.0120.01316.56
7.2.300.0100.01316.61
7.2.290.0130.01116.74
7.2.280.0120.00916.63
7.2.270.0110.00816.49
7.2.260.0120.01216.66
7.2.250.0060.01516.59
7.2.240.0080.01116.43
7.2.230.0050.01516.82
7.2.220.0060.01716.66
7.2.210.0140.00816.67
7.2.200.0100.01316.83
7.2.190.0220.00316.35
7.2.180.0130.00616.56
7.2.170.0150.00916.45
7.2.160.0100.00916.49
7.2.150.0130.00916.46
7.2.140.0050.01516.57
7.2.130.0090.01216.52
7.2.120.0130.01016.63
7.2.110.0030.01816.49
7.2.100.0060.01416.79
7.2.90.0030.01716.73
7.2.80.0100.01016.53
7.2.70.0140.00816.53
7.2.60.3480.01615.75
7.2.50.2700.01215.73
7.2.40.3600.01216.16
7.2.30.2990.01515.95
7.2.20.1940.01016.08
7.2.10.2270.00916.10
7.2.00.2720.01415.98
7.1.330.0670.01315.84
7.1.320.0210.01115.75
7.1.310.0120.00615.59
7.1.300.0090.01015.56
7.1.290.0390.00515.57
7.1.280.0130.00715.79
7.1.270.0100.01015.56
7.1.260.0130.01315.69
7.1.250.0090.00915.76
7.1.240.0040.01615.61
7.1.230.0140.00715.52
7.1.220.0090.01015.60
7.1.210.0120.00915.61
7.1.200.0070.01015.79
7.1.190.0100.00915.22
7.1.180.0060.01215.65
7.1.170.2620.00914.72
7.1.160.3330.01316.21
7.1.150.3240.01416.43
7.1.140.2120.01616.07
7.1.130.2650.01416.26
7.1.120.2720.01616.24
7.1.110.3290.01515.90
7.1.100.1900.01515.97
7.1.90.2600.01515.99
7.1.80.3200.00915.93
7.1.70.3190.01115.30
7.1.60.3210.01424.38
7.1.50.2980.01524.23
7.1.40.4360.01224.00
7.1.30.4140.01224.08
7.1.20.3620.01724.18
7.1.10.3380.01215.32
7.1.00.4780.01215.26
7.0.330.0080.01215.21
7.0.320.0210.00715.19
7.0.310.0150.00415.36
7.0.300.0090.00914.96
7.0.290.0060.01415.43
7.0.280.0060.01215.32
7.0.270.0090.01215.32
7.0.260.0110.01715.23
7.0.250.0050.01815.57
7.0.240.0200.00515.33
7.0.230.0060.01915.16
7.0.220.0060.01015.40
7.0.210.0140.01515.01
7.0.200.0170.01015.10
7.0.190.0180.00915.29
7.0.180.0130.01415.26
7.0.170.0120.01415.20
7.0.160.0100.01715.18
7.0.150.0040.01515.26
7.0.140.0040.02015.19
7.0.130.0210.00715.30
7.0.120.0160.00815.44
7.0.110.0130.00915.29
7.0.100.0160.00915.37
7.0.90.0060.01615.18
7.0.80.0030.02315.27
7.0.70.0130.01415.30
7.0.60.0060.01615.30
7.0.50.0110.01215.08
7.0.40.0080.01615.30
7.0.30.0110.01515.32
7.0.20.0160.01215.41
7.0.10.0180.01115.22
7.0.00.0050.01915.45
5.6.400.0110.01716.01
5.6.390.0090.01215.88
5.6.380.0120.01215.96
5.6.370.0120.00915.55
5.6.360.0090.01815.96
5.6.350.0140.00815.96
5.6.340.0170.00715.74
5.6.330.0140.01115.99
5.6.320.0120.01715.69
5.6.310.0100.01915.75
5.6.300.0030.02315.94
5.6.290.0190.01415.83
5.6.280.0120.01616.06
5.6.270.0030.02516.06
5.6.260.0100.01316.03
5.6.250.0160.01316.01
5.6.240.0150.00915.90
5.6.230.0110.01415.92
5.6.220.0030.02015.61
5.6.210.0090.01615.76
5.6.200.0100.01715.96
5.6.190.0190.00716.00
5.6.180.0180.01215.92
5.6.170.0200.01715.58
5.6.160.0110.01915.75
5.6.150.0130.01915.69
5.6.140.0090.01515.98
5.6.130.0100.01615.86
5.6.120.0240.00715.96
5.6.110.0030.02115.79
5.6.100.0100.02116.05
5.6.90.0090.02215.71
5.6.80.0070.02315.98
5.6.70.0140.01115.94
5.6.60.0130.01315.71
5.6.50.0090.01616.04
5.6.40.0150.01215.92
5.6.30.0070.01715.90
5.6.20.0080.01715.91
5.6.10.0130.00915.87
5.6.00.0150.01115.92

preferences:
47.9 ms | 401 KiB | 5 Q