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('🎖', 'UTF-32BE', 'UTF-8'), 'UTF-32BE')); # must say 2 var_dump(mb_strlen(mb_convert_encoding('A B C', 'UTF-32BE', 'UTF-8'), 'UTF-32BE')); # 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)
8.3.60.0210.00018.43
8.3.50.0040.01116.27
8.3.40.0080.00818.89
8.3.30.0060.00918.84
8.3.20.0080.00019.07
8.3.10.0050.00320.73
8.3.00.0000.00817.68
8.2.180.0140.00318.29
8.2.170.0120.00322.96
8.2.160.0110.00420.82
8.2.150.0050.00324.18
8.2.140.0000.00824.66
8.2.130.0080.00019.70
8.2.120.0070.00026.35
8.2.110.0030.00620.96
8.2.100.0000.01117.59
8.2.90.0030.00717.78
8.2.80.0060.00317.97
8.2.70.0030.00517.93
8.2.60.0060.00317.97
8.2.50.0040.00418.10
8.2.40.0030.00620.78
8.2.30.0000.00719.45
8.2.20.0070.00018.05
8.2.10.0040.00418.06
8.2.00.0000.00719.35
8.1.280.0090.00625.92
8.1.270.0080.00023.79
8.1.260.0050.00226.35
8.1.250.0040.00428.09
8.1.240.0030.00722.32
8.1.230.0050.01022.68
8.1.220.0030.00617.74
8.1.210.0060.00318.79
8.1.200.0030.00717.35
8.1.190.0090.00017.22
8.1.180.0040.00418.10
8.1.170.0000.00818.29
8.1.160.0040.00418.78
8.1.150.0040.00418.71
8.1.140.0030.00317.70
8.1.130.0000.00718.96
8.1.120.0000.00917.31
8.1.110.0040.00417.41
8.1.100.0000.00717.30
8.1.90.0000.00817.29
8.1.80.0060.00317.30
8.1.70.0050.00317.29
8.1.60.0000.00917.53
8.1.50.0040.00417.48
8.1.40.0000.00917.40
8.1.30.0100.00017.59
8.1.20.0070.00017.62
8.1.10.0040.00417.48
8.1.00.0000.00817.51
8.0.300.0030.00519.73
8.0.290.0050.00316.75
8.0.280.0000.00718.45
8.0.270.0050.00317.23
8.0.260.0030.00318.93
8.0.250.0070.00017.06
8.0.240.0040.00417.02
8.0.230.0000.00717.04
8.0.220.0000.00716.91
8.0.210.0000.00716.83
8.0.200.0000.00816.95
8.0.190.0030.00516.84
8.0.180.0050.00217.00
8.0.170.0080.00016.89
8.0.160.0000.00816.84
8.0.150.0100.00016.92
8.0.140.0000.00716.77
8.0.130.0000.00613.26
8.0.120.0030.00617.00
8.0.110.0000.01017.04
8.0.100.0060.00317.02
8.0.90.0050.00517.05
8.0.80.0070.01416.95
8.0.70.0000.00917.01
8.0.60.0000.00916.97
8.0.50.0040.00416.87
8.0.30.0100.01117.13
8.0.20.0100.01017.40
8.0.10.0050.00516.96
8.0.00.0120.01016.88
7.4.330.0030.00315.55
7.4.320.0030.00316.61
7.4.300.0060.00016.59
7.4.290.0030.00316.35
7.4.280.0000.00716.45
7.4.270.0000.00716.38
7.4.260.0030.00316.56
7.4.250.0040.00416.61
7.4.240.0040.00416.72
7.4.230.0000.00916.70
7.4.220.0000.00916.74
7.4.210.0100.00916.68
7.4.200.0080.00016.77
7.4.160.0080.01216.64
7.4.140.0080.01517.86
7.4.130.0170.00316.53
7.4.120.0110.01016.59
7.4.110.0070.01116.70
7.4.100.0100.01016.48
7.4.90.0160.01016.56
7.4.80.0120.00819.39
7.4.70.0130.01016.69
7.4.60.0060.01416.46
7.4.50.0090.00716.58
7.4.40.0140.00816.54
7.4.30.0120.00916.63
7.4.20.0090.01316.23
7.4.10.0040.01516.48
7.4.00.0130.01015.89
7.3.330.0000.00613.16
7.3.320.0080.00013.27
7.3.310.0040.00416.30
7.3.300.0040.00416.46
7.3.290.0060.00316.29
7.3.280.0070.01016.50
7.3.260.0110.00716.51
7.3.240.0110.01116.53
7.3.230.0120.00916.49
7.3.210.0130.00616.35
7.3.200.0160.00916.44
7.3.190.0050.01616.35
7.3.180.0160.00616.49
7.3.170.0130.01216.35
7.3.160.0070.01416.51
7.3.150.0040.01816.32
7.3.140.0120.00816.73
7.3.130.0100.01616.55
7.3.120.0090.01316.38
7.3.110.0120.01216.31
7.3.100.0090.02116.38
7.3.90.0070.02016.50
7.3.80.0180.00916.50
7.3.70.0120.01216.29
7.3.60.0100.01016.43
7.3.50.0140.00716.37
7.3.40.0080.01616.31
7.3.30.0090.01516.33
7.3.20.0120.01216.73
7.3.10.0150.01216.44
7.3.00.0100.01116.35
7.2.330.0130.01316.66
7.2.320.0130.00716.64
7.2.310.0100.01416.73
7.2.300.0050.01516.65
7.2.290.0070.01516.60
7.2.280.0100.01016.52
7.2.270.0100.01016.53
7.2.260.0150.00616.58
7.2.250.0130.00916.77
7.2.240.0090.01316.76
7.2.230.0090.01316.83
7.2.220.0090.01316.76
7.2.210.0100.01016.51
7.2.200.0090.01316.62
7.2.190.0040.01716.59
7.2.180.0080.01316.50
7.2.170.0090.01316.78
7.2.160.0090.01516.77
7.2.150.0120.01216.86
7.2.140.0130.00716.60
7.2.130.0060.01516.81
7.2.120.0170.00416.51
7.2.110.0100.01016.47
7.2.100.0200.01716.68
7.2.90.0110.01416.55
7.2.80.0030.02716.58
7.2.70.0090.01216.76
7.2.60.4620.00815.72
7.2.50.4530.00815.71
7.2.40.3540.00716.11
7.2.30.3740.01216.12
7.2.20.3660.00916.04
7.2.10.3160.01715.88
7.2.00.3280.01316.04
7.1.330.0130.01015.68
7.1.320.0120.01215.54
7.1.310.0090.01515.55
7.1.300.0090.01315.71
7.1.290.0100.01315.60
7.1.280.0170.00615.61
7.1.270.0110.01115.53
7.1.260.0110.00815.53
7.1.250.0080.01115.52
7.1.240.0140.00415.60
7.1.230.0030.01815.27
7.1.220.0060.01415.46
7.1.210.0090.01415.64
7.1.200.0070.01315.73
7.1.190.0120.01515.51
7.1.180.0170.00315.45
7.1.170.2760.00914.59
7.1.160.3510.01216.32
7.1.150.3520.00916.30
7.1.140.3880.00916.23
7.1.130.3000.01116.00
7.1.120.3530.00916.08
7.1.110.3850.01315.92
7.1.100.3280.01015.75
7.1.90.4950.00815.97
7.1.80.4030.01115.96
7.1.70.3890.01315.51
7.1.60.3720.01824.44
7.1.50.4980.01424.25
7.1.40.6020.01424.21
7.1.30.5750.01524.03
7.1.20.3090.01424.23
7.1.10.1220.01215.16
7.1.00.2950.01315.04
7.0.330.0090.00915.07
7.0.320.0110.00815.10
7.0.310.0030.01715.34
7.0.300.0110.01215.07
7.0.290.0040.01315.10
7.0.280.0140.00915.36
7.0.270.0090.00915.20
7.0.260.0170.00015.20
7.0.250.0080.01515.36
7.0.240.0090.01415.42
7.0.230.0170.00615.20
7.0.220.0050.01415.45
7.0.210.0060.01215.30
7.0.200.0110.00815.36
7.0.190.0130.01115.23
7.0.180.0180.01515.02
7.0.170.0100.01015.17
7.0.160.0130.00815.17
7.0.150.0080.01215.25
7.0.140.0110.00815.34
7.0.130.0100.01015.11
7.0.120.0070.01015.37
7.0.110.0140.00615.17
7.0.100.0130.01015.04
7.0.90.0150.01114.96
7.0.80.0110.01014.84
7.0.70.0130.00715.39
7.0.60.0190.00315.05
7.0.50.0050.01515.49
7.0.40.0180.00615.24
7.0.30.0060.01915.12
7.0.20.0530.00415.17
7.0.10.0090.01515.28
7.0.00.0130.01015.30
5.6.400.0060.01515.85
5.6.390.0220.00615.94
5.6.380.0070.01815.63
5.6.370.0080.01515.83
5.6.360.0100.01915.89
5.6.350.0110.00815.72
5.6.340.0090.01315.99
5.6.330.0080.01216.03
5.6.320.0140.00716.10
5.6.310.0210.00515.78
5.6.300.0090.01515.68
5.6.290.0190.00415.83
5.6.280.0100.01315.80
5.6.270.0110.01515.43
5.6.260.0150.00615.70
5.6.250.0220.00715.59
5.6.240.0110.01115.63
5.6.230.0180.00915.84
5.6.220.0100.01315.88
5.6.210.0080.01615.91
5.6.200.0250.00415.78
5.6.190.0210.00616.05
5.6.180.0110.01716.01
5.6.170.0160.01115.90
5.6.160.0140.01415.95
5.6.150.0030.02016.03
5.6.140.0120.01215.87
5.6.130.0130.00715.96
5.6.120.0000.02115.73
5.6.110.0130.00715.83
5.6.100.0140.00615.86
5.6.90.0160.01315.96
5.6.80.0130.00715.73
5.6.70.0140.00715.54
5.6.60.0130.01315.84
5.6.50.0080.01415.84
5.6.40.0120.00915.82
5.6.30.0180.00315.85
5.6.20.0060.01515.82
5.6.10.0170.00315.95
5.6.00.0080.01315.84

preferences:
68.35 ms | 400 KiB | 5 Q