3v4l.org

run code in 300+ PHP versions simultaneously
<?php function str_split_unicode($str, $l = 0) { if ($l > 0) { $ret = array(); $len = mb_strlen($str, "UTF-8"); for ($i = 0; $i < $len; $i += $l) { $ret[] = mb_substr($str, $i, $l, "UTF-8"); } return $ret; } return preg_split("//u", $str, -1, PREG_SPLIT_NO_EMPTY); } $s = '中华人民abc共和\x01国'; print_r(str_split_unicode($s)); print_r(str_split_unicode($s, 3));

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)
8.3.70.0040.01116.50
8.3.60.0110.00716.88
8.3.50.0110.00522.19
8.3.40.0100.00318.66
8.3.30.0070.00719.06
8.3.20.0040.00420.34
8.3.10.0060.00323.48
8.3.00.0080.00019.03
8.2.180.0060.00918.29
8.2.170.0100.00722.96
8.2.160.0100.00320.11
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0090.00026.16
8.2.120.0080.00022.30
8.2.110.0000.01122.28
8.2.100.0080.00417.84
8.2.90.0000.00819.08
8.2.80.0040.00417.97
8.2.70.0000.01017.62
8.2.60.0000.00818.05
8.2.50.0000.00818.07
8.2.40.0060.00319.94
8.2.30.0070.00018.39
8.2.20.0000.00817.75
8.2.10.0040.00418.08
8.2.00.0000.00817.88
8.1.280.0070.00725.92
8.1.270.0090.00022.02
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0090.00023.97
8.1.230.0120.00019.00
8.1.220.0030.00617.74
8.1.210.0040.00418.77
8.1.200.0000.00917.35
8.1.190.0040.00417.22
8.1.180.0050.00519.01
8.1.170.0040.00418.60
8.1.160.0080.00022.04
8.1.150.0040.00418.64
8.1.140.0050.00317.53
8.1.130.0030.00317.89
8.1.120.0040.00417.52
8.1.110.0030.00617.52
8.1.100.0000.00817.55
8.1.90.0060.00317.55
8.1.80.0000.00817.55
8.1.70.0070.00017.51
8.1.60.0060.00917.76
8.1.50.0040.00417.59
8.1.40.0050.00317.73
8.1.30.0000.00917.70
8.1.20.0080.00017.81
8.1.10.0040.00417.55
8.1.00.0070.00017.66
8.0.300.0000.00718.77
8.0.290.0070.00017.18
8.0.280.0040.00418.47
8.0.270.0000.00717.27
8.0.260.0070.00017.22
8.0.250.0070.00017.21
8.0.240.0030.00317.03
8.0.230.0040.00417.16
8.0.220.0030.00317.05
8.0.210.0030.00317.09
8.0.200.0030.00317.17
8.0.190.0000.00717.04
8.0.180.0000.00717.13
8.0.170.0030.00517.14
8.0.160.0000.00716.98
8.0.150.0040.00416.97
8.0.140.0000.00717.02
8.0.130.0000.00513.53
8.0.120.0000.00816.94
8.0.110.0000.00817.10
8.0.100.0040.00417.19
8.0.90.0030.00616.92
8.0.80.0100.01016.99
8.0.70.0050.00516.93
8.0.60.0040.00417.14
8.0.50.0000.00716.98
8.0.30.0150.00417.12
8.0.20.0100.01217.40
8.0.10.0020.00517.04
8.0.00.0060.01416.95
7.4.330.0020.00215.00
7.4.320.0030.00316.70
7.4.300.0000.00716.81
7.4.290.0030.00316.56
7.4.280.0030.00316.71
7.4.270.0040.00416.72
7.4.260.0000.00716.80
7.4.250.0050.00216.78
7.4.240.0050.00216.71
7.4.230.0000.00716.70
7.4.220.0150.00316.73
7.4.210.0100.00616.89
7.4.200.0000.00816.77
7.4.190.0030.00316.65
7.4.160.0120.00416.80
7.4.150.0120.00617.40
7.4.140.0120.00917.86
7.4.130.0090.01216.74
7.4.120.0090.00916.80
7.4.110.0000.01916.62
7.4.100.0070.01016.62
7.4.90.0080.01216.74
7.4.80.0090.01419.39
7.4.70.0110.00716.77
7.4.60.0070.01116.60
7.4.50.0040.00416.76
7.4.40.0110.01416.66
7.4.30.0050.01116.57
7.4.00.0030.01314.95
7.3.330.0050.00013.55
7.3.320.0030.00313.42
7.3.310.0030.00516.45
7.3.300.0070.00016.56
7.3.290.0090.00616.57
7.3.280.0090.00816.57
7.3.270.0080.00917.40
7.3.260.0120.00616.48
7.3.250.0090.00816.54
7.3.240.0090.00616.53
7.3.230.0100.00616.90
7.3.210.0100.00716.51
7.3.200.0130.01019.39
7.3.190.0090.00916.41
7.3.180.0140.00316.85
7.3.170.0050.01116.84
7.3.160.0090.00616.49
7.3.120.0080.00815.07
7.3.10.0030.01016.67
7.3.00.0050.00816.60
7.2.330.0110.01116.88
7.2.320.0130.00916.94
7.2.310.0110.00716.82
7.2.300.0130.00317.00
7.2.290.0100.00816.82
7.2.130.0030.01116.97
7.2.120.0080.00717.26
7.2.110.0070.00316.87
7.2.100.0100.00517.13
7.2.90.0090.00617.26
7.2.80.0050.00717.04
7.2.70.0070.00717.20
7.2.60.0070.00817.20
7.2.50.0040.00917.14
7.2.40.0070.00716.94
7.2.30.0090.00517.15
7.2.20.0060.00817.24
7.2.10.0120.00217.20
7.2.00.0080.00417.09
7.1.250.0050.01115.94
7.1.240.0030.01015.75
7.1.230.0040.01115.67
7.1.220.0100.00316.08
7.1.210.0040.00415.95
7.1.200.0050.00815.83
7.1.190.0060.00616.23
7.1.180.0150.00015.96
7.1.170.0110.00415.89
7.1.160.0030.00916.21
7.1.150.0040.00715.89
7.1.140.0030.01016.07
7.1.130.0060.00915.84
7.1.120.0060.00615.93
7.1.110.0140.00316.04
7.1.100.0060.00615.92
7.1.90.0110.00416.22
7.1.80.0090.00315.91
7.1.70.0080.00416.75
7.1.60.0060.01317.62
7.1.50.0100.00416.64
7.1.40.0070.00716.03
7.1.30.0070.00715.96
7.1.20.0040.00815.79
7.1.10.0000.00815.93
7.1.00.0050.04219.23
7.0.330.0030.00815.73
7.0.320.0070.00715.63
7.0.310.0000.01415.74
7.0.300.0080.00515.52
7.0.290.0030.01015.75
7.0.280.0040.00415.62
7.0.270.0030.01015.36
7.0.260.0130.00015.55
7.0.250.0070.00315.65
7.0.240.0070.00315.58
7.0.230.0030.01015.63
7.0.220.0060.00915.59
7.0.210.0100.00715.50
7.0.200.0030.01016.14
7.0.190.0030.01015.62
7.0.180.0070.00715.68
7.0.170.0080.00515.55
7.0.160.0030.01215.45
7.0.150.0000.01415.70
7.0.140.0030.04118.91
7.0.130.0000.01515.74
7.0.120.0040.00815.63
7.0.110.0030.01015.59
7.0.100.0080.00015.65
7.0.90.0000.01315.75
7.0.80.0000.01315.73
7.0.70.0070.00715.64
7.0.60.0080.03317.84
7.0.50.0120.03316.83
7.0.40.0050.04716.97
7.0.30.0170.04316.88
7.0.20.0170.03116.77
7.0.10.0180.03816.88
7.0.00.0060.02516.94
5.6.380.0080.00314.54
5.6.370.0030.01014.38
5.6.360.0090.00614.54
5.6.350.0060.00614.45
5.6.340.0070.00714.20
5.6.330.0080.00014.68
5.6.320.0090.00614.36
5.6.310.0110.00414.70
5.6.300.0000.01214.23
5.6.290.0060.00614.74
5.6.280.0030.01214.69
5.6.270.0030.00614.50
5.6.260.0120.00314.49
5.6.250.0100.00314.01
5.6.240.0070.00714.52
5.6.230.0040.01114.38
5.6.220.0000.01314.23
5.6.210.0030.03717.46
5.6.200.0070.03016.39
5.6.190.0120.04417.55
5.6.180.1710.02117.49
5.6.170.0200.04317.29
5.6.160.0030.02517.43
5.6.150.0110.03816.30
5.6.140.0030.04116.32
5.6.130.0120.04016.32
5.6.120.0060.03017.63
5.6.110.0070.04517.79
5.6.100.0080.04517.74
5.6.90.0070.04817.63
5.6.80.0080.03517.48
5.6.70.0020.04517.43
5.6.60.0130.00314.34
5.6.50.0040.01114.45
5.6.40.0000.01414.63
5.6.30.0160.00014.21
5.6.20.0070.00714.26
5.6.10.0030.01014.67
5.6.00.0060.00614.46
5.5.380.0090.00311.50
5.5.370.0080.00611.37
5.5.360.0070.00311.52
5.5.350.0140.02215.92
5.5.340.0070.03714.70
5.5.330.0070.04415.71
5.5.320.0170.02515.73
5.5.310.0150.04015.74
5.5.300.0080.04214.60
5.5.290.0070.04714.55
5.5.280.0020.02416.08
5.5.270.0120.03716.22
5.5.260.0050.03616.20
5.5.250.0100.03815.93
5.5.240.0070.03815.68
5.5.230.0030.00711.18
5.5.220.0070.00411.18
5.5.210.0120.00011.25
5.5.200.0110.00011.30
5.5.190.0000.01211.18
5.5.180.0070.00011.37
5.5.170.0040.00811.18
5.5.160.0080.00311.28
5.5.150.0030.00711.29
5.5.140.0100.00011.38
5.5.130.0060.00611.18
5.5.120.0030.00611.27
5.5.110.0000.01111.18
5.5.100.0060.00611.33
5.5.90.0060.00611.23
5.5.80.0070.00711.30
5.5.70.0040.00711.29
5.5.60.0060.00611.20
5.5.50.0030.00311.37
5.5.40.0040.00411.18
5.5.30.0000.00711.26
5.5.20.0040.00411.34
5.5.10.0090.00311.18
5.5.00.0050.00311.37
5.4.450.0070.03415.32
5.4.440.0140.03015.50
5.4.430.0070.03415.40
5.4.420.0350.00015.35
5.4.410.0080.03215.08
5.4.400.0230.02514.85
5.4.390.0100.03515.00
5.4.380.0130.03414.97
5.4.370.0030.02314.95
5.4.360.0120.02115.01
5.4.350.0040.03311.61
5.4.340.0090.01711.61
5.4.330.0120.00011.25
5.4.320.0060.02311.84
5.4.310.0080.02411.84
5.4.300.0080.02211.84
5.4.290.0080.02011.84
5.4.280.0060.02111.79
5.4.270.0050.02511.79
5.4.260.0100.02211.80
5.4.250.0050.02611.91
5.4.240.0050.02411.79
5.4.230.0040.03111.79
5.4.220.0120.02411.88
5.4.210.0080.02011.78
5.4.200.0060.02311.79
5.4.190.0040.02411.78
5.4.180.0040.02311.78
5.4.170.0080.02211.89
5.4.160.0060.02211.78
5.4.150.0080.01911.85
5.4.140.0080.02111.62
5.4.130.0050.02011.62
5.4.120.0080.01911.65
5.4.110.0090.02711.59
5.4.100.0090.02211.76
5.4.90.0040.02311.60
5.4.80.0050.02311.59
5.4.70.0080.02811.66
5.4.60.0100.03311.68
5.4.50.0060.02711.69
5.4.40.0080.02311.69
5.4.30.0040.02811.59
5.4.20.0050.02211.59
5.4.10.0060.02211.65
5.4.00.0050.02211.41
5.3.290.0080.02611.99
5.3.280.0110.02311.94
5.3.270.0080.03311.95
5.3.260.0140.03511.95
5.3.250.0160.03811.95
5.3.240.0070.02411.95
5.3.230.0080.02311.94
5.3.220.0080.02011.93
5.3.210.0080.02111.93
5.3.200.0060.02311.93
5.3.190.0050.02411.93
5.3.180.0060.02411.92
5.3.170.0070.03211.92
5.3.160.0140.03311.93
5.3.150.0080.02211.93
5.3.140.0090.02211.92
5.3.130.0090.02211.92
5.3.120.0060.03511.92
5.3.110.0070.02911.92
5.3.100.0070.02911.65
5.3.90.0030.02311.64
5.3.80.0080.02011.63
5.3.70.0070.02311.63
5.3.60.0060.02011.63
5.3.50.0050.02211.60
5.3.40.0050.02411.60
5.3.30.0090.01811.58
5.3.20.0070.02811.47
5.3.10.0060.02411.45
5.3.00.0040.03111.45
5.2.170.0070.02210.20
5.2.160.0050.01610.20
5.2.150.0050.01810.20
5.2.140.0050.02510.19
5.2.130.0070.02110.17
5.2.120.0060.02310.18
5.2.110.0060.02110.18
5.2.100.0050.02310.18
5.2.90.0070.02510.17
5.2.80.0060.01910.17
5.2.70.0080.01810.17
5.2.60.0060.01810.15
5.2.50.0060.01910.13
5.2.40.0090.02510.13
5.2.30.0080.01610.11
5.2.20.0090.01910.11
5.2.10.0070.01810.06
5.2.00.0070.0169.99
5.1.60.0050.0199.63
5.1.50.0070.0219.63
5.1.40.0070.0249.62
5.1.30.0070.0419.80
5.1.20.0100.0399.81
5.1.10.0050.0229.67
5.1.00.0050.0209.67
5.0.50.0030.0168.91
5.0.40.0050.0158.84
5.0.30.0040.0238.74
5.0.20.0030.0168.73
5.0.10.0050.0168.71
5.0.00.0020.0268.71
4.4.90.0070.0107.98
4.4.80.0050.0137.96
4.4.70.0030.0147.96
4.4.60.0030.0127.97
4.4.50.0050.0127.97
4.4.40.0040.0167.94
4.4.30.0050.0117.97
4.4.20.0040.0138.01
4.4.10.0020.0168.01
4.4.00.0050.0177.97
4.3.110.0030.0177.92
4.3.100.0040.0137.92
4.3.90.0050.0127.90
4.3.80.0060.0187.88
4.3.70.0090.0157.90
4.3.60.0050.0287.90
4.3.50.0040.0217.90
4.3.40.0050.0187.86
4.3.30.0020.0137.24
4.3.20.0040.0147.23
4.3.10.0040.0127.21
4.3.00.0030.0139.04

preferences:
34.33 ms | 401 KiB | 5 Q