3v4l.org

run code in 300+ PHP versions simultaneously
<?php /* Set internal character encoding to UTF-8 */ mb_internal_encoding('UTF-8'); mb_http_output('UTF-8'); mb_http_input('UTF-8'); mb_language('uni'); mb_regex_encoding('UTF-8'); ob_start('mb_output_handler'); $chars = '안녕하세요ABCDEFGHIJKLMNOPQRSTUVWXYZ안녕하세요'; $len = strlen($chars); for ($i = 0; $i < $len; $i++) { echo mb_substr($chars,$i,1).'|'; }

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)
8.3.60.0040.01118.14
8.3.50.0050.01021.99
8.3.40.0120.00418.79
8.3.30.0140.01418.96
8.3.20.0070.00020.16
8.3.10.0000.00722.15
8.3.00.0030.00522.46
8.2.180.0120.00316.50
8.2.170.0110.00722.96
8.2.160.0100.00319.21
8.2.150.0000.00824.18
8.2.140.0030.00524.66
8.2.130.0070.00026.16
8.2.120.0030.00619.14
8.2.110.0060.00319.30
8.2.100.0060.00617.91
8.2.90.0070.00019.17
8.2.80.0040.00417.97
8.2.70.0060.00317.63
8.2.60.0040.00417.90
8.2.50.0060.00318.07
8.2.40.0050.00318.16
8.2.30.0030.00617.94
8.2.20.0000.00717.59
8.2.10.0040.00417.63
8.2.00.0000.00817.55
8.1.280.0100.00725.92
8.1.270.0080.00022.02
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00321.35
8.1.230.0040.00817.42
8.1.220.0000.00817.74
8.1.210.0050.00318.77
8.1.200.0090.00017.22
8.1.190.0000.00917.22
8.1.180.0060.00318.61
8.1.170.0040.00418.59
8.1.160.0000.00722.00
8.1.150.0040.00418.59
8.1.140.0060.00317.27
8.1.130.0000.00717.69
8.1.120.0000.00717.39
8.1.110.0000.00717.23
8.1.100.0000.00717.24
8.1.90.0000.00717.32
8.1.80.0000.00717.30
8.1.70.0000.00717.30
8.1.60.0060.00317.39
8.1.50.0030.00617.48
8.1.40.0040.00417.52
8.1.30.0000.00717.63
8.1.20.0030.00517.60
8.1.10.0030.00517.40
8.1.00.0040.00417.44
8.0.300.0050.00218.77
8.0.290.0040.00416.63
8.0.280.0070.00018.45
8.0.270.0040.00417.20
8.0.260.0000.00716.73
8.0.250.0030.00317.01
8.0.240.0000.00716.95
8.0.230.0090.00016.98
8.0.220.0080.00016.90
8.0.210.0000.00716.88
8.0.200.0070.00016.82
8.0.190.0000.00816.96
8.0.180.0030.00516.82
8.0.170.0030.00516.91
8.0.160.0040.00416.78
8.0.150.0040.00416.82
8.0.140.0040.00416.70
8.0.130.0060.00013.34
8.0.120.0000.00916.80
8.0.110.0000.00716.93
8.0.100.0040.00416.75
8.0.90.0000.00816.72
8.0.80.0070.01016.86
8.0.70.0070.00016.78
8.0.60.0070.00016.84
8.0.50.0000.00816.80
8.0.30.0100.01416.95
8.0.20.0120.00717.40
8.0.10.0000.00716.86
8.0.00.0070.01016.70
7.4.330.0030.00315.08
7.4.320.0030.00316.47
7.4.300.0000.00716.54
7.4.290.0000.00716.45
7.4.280.0040.00416.64
7.4.270.0070.00016.51
7.4.260.0000.00916.63
7.4.250.0040.00416.41
7.4.240.0000.00816.57
7.4.230.0030.00316.69
7.4.220.0130.00616.54
7.4.210.0060.00816.58
7.4.200.0030.00316.51
7.4.190.0070.00016.50
7.4.160.0070.01416.60
7.4.150.0100.00717.40
7.4.140.0050.01417.86
7.4.130.0080.01416.54
7.4.120.0070.01216.59
7.4.110.0160.00016.35
7.4.100.0120.00616.59
7.4.90.0060.01516.71
7.4.80.0150.00619.39
7.4.70.0030.01316.33
7.4.60.0070.01016.40
7.4.50.0000.00816.41
7.4.40.0080.01122.77
7.4.30.0100.01016.42
7.4.00.0030.01315.14
7.3.330.0060.00013.15
7.3.320.0030.00313.12
7.3.310.0070.00016.34
7.3.300.0060.00016.39
7.3.290.0110.00416.43
7.3.280.0110.00916.43
7.3.270.0110.00717.40
7.3.260.0120.00616.28
7.3.250.0080.01116.37
7.3.240.0100.01316.30
7.3.230.0090.00916.39
7.3.210.0040.01316.54
7.3.200.0090.01219.39
7.3.190.0080.01116.40
7.3.180.0030.01316.52
7.3.170.0130.00316.44
7.3.160.0080.00816.33
7.3.120.0070.01115.01
7.3.00.0040.00916.74
7.2.330.0120.01216.42
7.2.320.0060.01216.64
7.2.310.0030.01416.76
7.2.300.0150.00316.46
7.2.290.0070.01016.71
7.2.130.0070.00717.14
7.2.120.0000.01416.93
7.2.110.0000.01516.95
7.2.100.0080.00617.01
7.2.90.0060.00616.97
7.2.80.0070.01017.20
7.2.70.0100.00317.12
7.2.60.0040.01217.04
7.2.50.0090.00616.55
7.2.40.0080.00817.04
7.2.30.0040.00416.86
7.2.20.0070.00416.99
7.2.10.0060.00617.14
7.2.00.0030.00616.93
7.1.250.0000.01315.83
7.1.240.0070.00315.58
7.1.230.0060.00615.58
7.1.220.0030.00715.87
7.1.210.0030.00915.86
7.1.200.0030.01015.73
7.1.190.0090.00615.82
7.1.180.0060.00915.98
7.1.170.0070.00715.56
7.1.160.0080.00315.85
7.1.150.0030.01015.64
7.1.140.0030.01016.04
7.1.130.0120.00615.95
7.1.120.0100.00315.84
7.1.110.0090.00615.84
7.1.100.0070.00716.00
7.1.90.0080.00815.86
7.1.80.0060.00315.80
7.1.70.0000.01016.56
7.1.60.0080.01217.76
7.1.50.0080.00816.34
7.1.40.0030.00915.79
7.1.30.0030.00715.79
7.1.20.0040.00415.88
7.1.10.0040.01115.93
7.1.00.0050.04219.14
7.0.330.0000.00815.15
7.0.320.0070.00415.47
7.0.310.0060.00615.52
7.0.300.0000.01515.20
7.0.290.0030.01015.38
7.0.280.0060.01015.32
7.0.270.0030.01015.49
7.0.260.0090.00615.44
7.0.250.0090.00615.37
7.0.240.0100.00315.30
7.0.230.0030.00715.06
7.0.220.0030.00915.39
7.0.210.0030.01015.39
7.0.200.0050.00716.03
7.0.190.0070.00715.38
7.0.180.0060.00615.34
7.0.170.0030.01015.57
7.0.160.0040.00815.46
7.0.150.0000.01015.64
7.0.140.0050.04018.87
7.0.130.0070.00715.56
7.0.120.0070.00715.45
7.0.110.0030.00915.48
7.0.100.0030.01015.34
7.0.90.0060.00315.38
7.0.80.0030.01015.35
7.0.70.0030.01315.43
7.0.60.0040.04917.65
7.0.50.0050.02216.71
7.0.40.0070.03916.66
7.0.30.0220.04016.79
7.0.20.0130.03216.93
7.0.10.0130.03316.76
7.0.00.0080.03016.90
5.6.380.0060.00614.25
5.6.370.0030.01014.28
5.6.360.0080.00814.26
5.6.350.0070.00714.19
5.6.340.0040.01114.33
5.6.330.0040.01114.16
5.6.320.0000.00914.39
5.6.310.0110.00314.37
5.6.300.0040.01114.50
5.6.290.0040.00714.19
5.6.280.0060.03617.79
5.6.270.0000.01414.29
5.6.260.0100.00614.46
5.6.250.0060.00914.38
5.6.240.0030.01014.45
5.6.230.0070.00714.48
5.6.220.0060.00914.21
5.6.210.0120.03717.44
5.6.200.0030.02516.24
5.6.190.0110.04517.57
5.6.180.1800.02817.29
5.6.170.0140.02517.51
5.6.160.0080.04017.38
5.6.150.0020.05016.21
5.6.140.0020.02816.26
5.6.130.0100.02516.20
5.6.120.0080.04717.61
5.6.110.0050.04317.68
5.6.100.0050.02417.67
5.6.90.0080.02517.67
5.6.80.0150.03717.36
5.6.70.1900.02017.27
5.6.60.0040.00814.20
5.6.50.0100.00714.25
5.6.40.0040.01114.16
5.6.30.0100.00314.23
5.6.20.0100.00314.41
5.6.10.0030.00614.39
5.6.00.0000.00914.42
5.5.380.0030.00911.26
5.5.370.0060.00611.07
5.5.360.0070.00311.07
5.5.350.0130.03815.75
5.5.340.0050.04314.60
5.5.330.0070.04215.60
5.5.320.0180.03215.87
5.5.310.0170.03415.75
5.5.300.0050.04014.50
5.5.290.0080.02014.63
5.5.280.0050.03715.91
5.5.270.0080.02015.98
5.5.260.0080.02115.87
5.5.250.0050.02315.86
5.5.240.0030.04715.63
5.5.230.0040.00311.00
5.5.220.0000.01011.00
5.5.210.0000.00711.22
5.5.200.0000.00911.22
5.5.190.0030.01011.00
5.5.180.0000.00611.01
5.5.170.0060.00311.18
5.5.160.0060.00311.00
5.5.150.0060.00311.00
5.5.140.0030.01011.22
5.5.130.0030.00711.05
5.5.120.0030.00711.09
5.5.110.0080.00011.24
5.5.100.0040.00811.00
5.5.90.0060.00611.03
5.5.80.0060.00611.12
5.5.70.0000.01011.00
5.5.60.0000.01111.24
5.5.50.0040.00411.06
5.5.40.0000.01011.23
5.5.30.0000.00811.16
5.5.20.0100.00311.16
5.5.10.0070.00411.02
5.5.00.0040.00711.00
5.4.450.0480.03315.07
5.4.440.0230.03015.33
5.4.430.0030.03415.32
5.4.420.0110.02615.29
5.4.410.0030.03215.27
5.4.400.0470.00414.89
5.4.390.0560.00414.96
5.4.380.0100.03514.89
5.4.370.0170.02514.84
5.4.360.0230.02814.83
5.4.350.0240.02314.95
5.4.340.0170.02714.81
5.4.330.0030.00311.00
5.4.320.0030.02211.74
5.4.310.0060.02811.73
5.4.300.0030.02111.73
5.4.290.0040.02711.80
5.4.280.0050.02111.68
5.4.270.0010.02711.68
5.4.260.0040.04214.94
5.4.250.0030.02814.89
5.4.240.0050.02814.89
5.4.230.0060.02815.00
5.4.220.0070.02715.04
5.4.210.0030.02614.91
5.4.200.0070.03214.92
5.4.190.0060.03414.89
5.4.180.0050.03014.87
5.4.170.0050.02814.99
5.4.160.0030.03015.06
5.4.150.0030.03014.83
5.4.140.0020.04013.69
5.4.130.0060.03613.63
5.4.120.0080.02413.64
5.4.110.0050.03813.65
5.4.100.0020.03113.70
5.4.90.0020.03313.74
5.4.80.0040.03713.77
5.4.70.0020.04213.75
5.4.60.0050.02513.73
5.4.50.0040.03713.68
5.4.40.0020.03613.66
5.4.30.0030.03513.56
5.4.20.0070.03113.81
5.4.10.0000.03313.73
5.4.00.0050.03413.49
5.3.290.0070.02711.90
5.3.280.0030.02712.80
5.3.270.0040.02912.83
5.3.260.0030.03012.75
5.3.250.0100.02512.88
5.3.240.0050.02712.82
5.3.230.0030.02812.74
5.3.220.0030.03012.81
5.3.210.0090.02612.73
5.3.200.0090.03012.83
5.3.190.0110.02112.71
5.3.180.0000.03112.78
5.3.170.0060.03812.73
5.3.160.0040.02712.77
5.3.150.0040.03012.86
5.3.140.0050.03212.83
5.3.130.0080.02612.79
5.3.120.0070.03812.79
5.3.110.0050.03512.78
5.3.100.0000.03112.52
5.3.90.0050.03012.46
5.3.80.0070.02712.52
5.3.70.0130.02812.45
5.3.60.0090.02412.44
5.3.50.0070.02712.48
5.3.40.0070.03312.41
5.3.30.0070.02212.46
5.3.20.0050.02812.27
5.3.10.0050.02612.40
5.3.00.0050.03112.27
5.2.170.0020.02811.03
5.2.160.0030.02311.08
5.2.150.0020.02511.15
5.2.140.0050.02311.03
5.2.130.0030.02311.05
5.2.120.0000.02611.13
5.2.110.0070.01811.06
5.2.100.0000.02511.06
5.2.90.0030.02911.00
5.2.80.0020.02911.01
5.2.70.0030.02311.04
5.2.60.0040.02310.97
5.2.50.0000.02511.02
5.2.40.0060.02511.04
5.2.30.0030.02310.87
5.2.20.0020.03010.93
5.2.10.0030.02811.04
5.2.00.0000.02310.83
5.1.60.0020.02310.54
5.1.50.0040.01910.55
5.1.40.0030.02010.42
5.1.30.0010.02310.67
5.1.20.0000.02110.60
5.1.10.0030.02210.55
5.1.00.0030.02310.56
5.0.50.0000.0179.70
5.0.40.0020.0219.78
5.0.30.0040.0209.63
5.0.20.0000.0179.64
5.0.10.0030.0139.62
5.0.00.0050.0209.57
4.4.90.0000.0148.92
4.4.80.0000.0138.92
4.4.70.0030.0128.92
4.4.60.0010.0138.92
4.4.50.0020.0118.92
4.4.40.0010.0258.92
4.4.30.0040.0108.92
4.4.20.0040.0108.92
4.4.10.0010.0138.92
4.4.00.0000.0198.92
4.3.110.0020.0178.92
4.3.100.0030.0128.92
4.3.90.0000.0138.92
4.3.80.0030.0208.92
4.3.70.0020.0128.92
4.3.60.0020.0178.92
4.3.50.0000.0148.92
4.3.40.0020.0228.92
4.3.30.0020.0158.92
4.3.20.0070.0088.92
4.3.10.0020.0178.92
4.3.00.0030.00812.74

preferences:
39.9 ms | 401 KiB | 5 Q