3v4l.org

run code in 300+ PHP versions simultaneously
<?php mb_internal_encoding("UTF-8"); $mb_string = 'žščř'; $l=mb_strlen($mb_string); for($i=0;$i<$l;$i++) { print(mb_substr($mb_string,$i,1)."<br/>"); } ?>

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)
8.3.70.0150.00616.63
8.3.60.0150.00618.31
8.3.50.0120.00321.20
8.3.40.0120.00318.69
8.3.30.0140.00018.71
8.3.20.0080.00018.70
8.3.10.0000.00821.09
8.3.00.0040.00423.65
8.2.180.0140.00718.41
8.2.170.0110.01122.96
8.2.160.0110.00420.39
8.2.150.0030.00524.18
8.2.140.0080.00024.66
8.2.130.0050.00226.16
8.2.120.0090.00019.66
8.2.110.0000.00921.89
8.2.100.0120.00017.91
8.2.90.0050.00319.23
8.2.80.0040.00417.97
8.2.70.0050.00317.38
8.2.60.0030.00618.04
8.2.50.0040.00418.07
8.2.40.0000.00918.22
8.2.30.0050.00321.33
8.2.20.0040.00417.64
8.2.10.0040.00417.57
8.2.00.0030.00617.67
8.1.280.0070.01025.92
8.1.270.0080.00023.99
8.1.260.0070.00726.35
8.1.250.0030.01028.09
8.1.240.0060.00322.47
8.1.230.0080.00421.03
8.1.220.0050.00318.77
8.1.210.0040.00418.99
8.1.200.0040.00417.00
8.1.190.0030.00617.39
8.1.180.0030.00918.10
8.1.170.0050.00318.64
8.1.160.0040.00418.89
8.1.150.0040.00418.63
8.1.140.0070.00017.46
8.1.130.0030.00317.74
8.1.120.0040.00417.32
8.1.110.0030.00717.40
8.1.100.0000.00717.31
8.1.90.0000.00717.45
8.1.80.0030.00717.50
8.1.70.0000.00717.42
8.1.60.0040.00417.50
8.1.50.0070.00017.43
8.1.40.0040.00417.48
8.1.30.0000.00717.66
8.1.20.0030.00517.68
8.1.10.0000.00717.46
8.1.00.0040.00417.36
8.0.300.0110.00020.02
8.0.290.0060.00316.75
8.0.280.0060.00318.55
8.0.270.0030.00317.27
8.0.260.0000.00716.75
8.0.250.0080.00017.01
8.0.240.0030.00517.03
8.0.230.0080.00016.96
8.0.220.0030.00316.95
8.0.210.0050.00317.02
8.0.200.0030.00316.88
8.0.190.0070.00017.05
8.0.180.0000.00716.95
8.0.170.0070.00016.96
8.0.160.0040.00417.03
8.0.150.0030.00316.82
8.0.140.0030.00316.88
8.0.130.0000.00613.34
8.0.120.0040.00416.80
8.0.110.0000.00816.84
8.0.100.0000.00816.73
8.0.90.0050.00217.01
8.0.80.0130.00316.89
8.0.70.0070.00016.73
8.0.60.0050.00216.70
8.0.50.0040.00416.94
8.0.30.0090.00916.83
8.0.20.0110.00717.40
8.0.10.0040.00316.78
8.0.00.0150.00916.74
7.4.330.0060.00014.82
7.4.320.0000.00616.43
7.4.300.0060.00016.43
7.4.290.0030.00316.54
7.4.280.0070.00016.38
7.4.270.0070.00016.45
7.4.260.0030.00313.14
7.4.250.0070.00016.35
7.4.240.0070.00016.37
7.4.230.0000.00716.53
7.4.220.0030.01316.50
7.4.210.0100.00716.52
7.4.200.0000.00716.34
7.4.190.0050.00316.55
7.4.160.0130.00316.40
7.4.150.0100.01117.40
7.4.140.0070.01317.86
7.4.130.0060.01016.43
7.4.120.0080.00816.51
7.4.110.0040.01516.35
7.4.100.0070.01016.36
7.4.90.0080.00916.41
7.4.80.0180.00419.37
7.4.70.0100.00616.45
7.4.60.0070.01316.43
7.4.50.0030.00616.52
7.4.40.0040.01422.52
7.4.30.0080.00816.61
7.4.00.0100.00714.90
7.3.330.0020.00212.99
7.3.320.0000.00713.10
7.3.310.0040.00416.39
7.3.300.0030.00316.30
7.3.290.0100.00716.31
7.3.280.0060.01116.29
7.3.270.0060.01217.40
7.3.260.0100.01418.24
7.3.250.0090.00816.44
7.3.240.0070.01016.20
7.3.230.0120.00616.60
7.3.210.0120.00616.30
7.3.200.0140.00819.39
7.3.190.0070.01016.43
7.3.180.0170.00016.54
7.3.170.0090.00916.27
7.3.160.0120.00316.29
7.3.120.0080.00614.93
7.3.110.0030.01414.50
7.3.100.0080.00414.68
7.3.90.0060.00914.95
7.3.80.0000.01314.77
7.3.70.0090.00614.68
7.3.60.0100.00414.73
7.3.50.0130.00314.52
7.3.40.0100.00714.82
7.3.30.0000.01314.79
7.3.20.0060.00316.70
7.3.10.0080.00516.57
7.3.00.0050.00716.60
7.2.330.0100.00716.72
7.2.320.0100.01316.76
7.2.310.0160.00716.63
7.2.300.0120.00916.44
7.2.290.0030.01316.85
7.2.250.0130.00615.23
7.2.240.0090.00914.83
7.2.230.0040.01114.91
7.2.220.0040.00815.10
7.2.210.0030.00914.83
7.2.200.0040.01415.19
7.2.190.0040.00815.16
7.2.180.0040.00814.97
7.2.170.0060.00615.05
7.2.130.0030.01016.77
7.2.120.0120.00316.66
7.2.110.0070.01316.93
7.2.100.0060.00316.57
7.2.90.0070.00716.91
7.2.80.0050.01116.65
7.2.70.0140.00416.94
7.2.60.0070.01016.57
7.2.50.0090.00816.56
7.2.40.0060.01016.64
7.2.30.0100.00916.67
7.2.20.0120.00316.77
7.2.10.0050.00516.56
7.2.00.0080.00617.49
7.1.330.0040.01115.86
7.1.320.0030.00715.96
7.1.310.0030.00615.54
7.1.300.0040.01115.95
7.1.290.0000.01115.88
7.1.280.0000.01115.77
7.1.270.0040.00815.55
7.1.260.0050.00815.80
7.1.250.0040.01215.68
7.1.200.0060.01415.80
7.1.190.0130.00015.78
7.1.180.0100.00715.49
7.1.170.0070.00715.55
7.1.160.0100.00415.50
7.1.150.0060.00615.19
7.1.140.0040.00815.61
7.1.130.0090.00915.64
7.1.120.0000.01515.24
7.1.110.0120.00415.32
7.1.100.0110.00216.77
7.1.90.0060.00815.23
7.1.80.0090.00415.19
7.1.70.0070.00316.32
7.1.60.0210.00826.36
7.1.50.0290.01434.21
7.1.40.0270.00733.33
7.1.30.0360.00833.84
7.1.20.0330.00633.82
7.1.10.0110.00515.77
7.1.00.0100.04019.01
7.0.310.0000.01415.37
7.0.300.0090.00314.90
7.0.290.0060.01114.95
7.0.280.0100.00015.06
7.0.270.0060.00915.05
7.0.260.0100.00315.35
7.0.250.0050.01614.87
7.0.240.0000.01214.78
7.0.230.0080.00515.00
7.0.220.0060.00815.43
7.0.210.0060.00915.02
7.0.200.0040.00715.99
7.0.190.0110.00314.86
7.0.180.0160.00315.61
7.0.170.0200.00015.63
7.0.160.0130.00415.17
7.0.150.0180.00415.34
7.0.140.0100.03818.70
7.0.130.0140.00515.30
7.0.120.0200.00015.67
7.0.110.0040.01515.33
7.0.100.0170.00315.30
7.0.90.0100.01014.97
7.0.80.0130.00414.91
7.0.70.0060.02618.26
7.0.60.0040.03218.33
7.0.50.0120.03918.73
7.0.40.0110.04517.69
7.0.30.0090.04617.76
7.0.20.0090.04717.64
7.0.10.0030.04617.58
7.0.00.0080.02417.64
5.6.300.0200.00214.26
5.6.290.0200.00314.46
5.6.280.0090.04117.71
5.6.270.0140.00814.61
5.6.260.0110.01114.56
5.6.250.0080.01213.71
5.6.240.0060.01113.86
5.6.230.0090.00614.13
5.6.220.0140.03517.23
5.6.210.0050.04317.09
5.6.200.0090.04317.50
5.6.190.0100.02517.69
5.6.180.0050.03817.60
5.6.170.0110.04317.69
5.6.160.0050.04917.32
5.6.150.0070.04517.58
5.6.140.0080.04217.57
5.6.130.0120.04717.61
5.6.120.0030.04617.63
5.6.110.0020.05217.54
5.6.100.0030.04917.57
5.6.90.0050.03217.38
5.6.80.0140.04017.07
5.6.70.0060.03717.07
5.6.60.0080.04417.14
5.6.50.0100.04017.02
5.6.40.0050.02417.11
5.6.30.0050.03517.43
5.6.20.0030.02717.21
5.6.10.0050.02617.28
5.6.00.0060.02617.24
5.5.380.0070.00710.31
5.5.370.0040.01210.36
5.5.360.0050.03415.45
5.5.350.0040.03315.44
5.5.340.0010.04415.74
5.5.330.0070.02515.90
5.5.320.0100.02916.03
5.5.310.0060.04115.90
5.5.300.0050.04615.78
5.5.290.0090.03516.02
5.5.280.0000.02815.80
5.5.270.0080.03315.71
5.5.260.0040.04015.73
5.5.250.0000.05015.60
5.5.240.0070.04215.36
5.5.230.0110.04415.35
5.5.220.0030.03615.31
5.5.210.0030.03315.48
5.5.200.0030.02715.45
5.5.190.0090.02015.32
5.5.180.0030.02515.26
5.5.170.0210.00414.05
5.5.160.0040.02215.66
5.5.150.0050.02315.49
5.5.140.0100.01515.68
5.5.130.0070.02915.75
5.5.120.0080.04115.55
5.5.110.0040.04515.67
5.5.100.0090.02215.64
5.5.90.0030.04315.60
5.5.80.0090.03815.42
5.5.70.0070.02215.54
5.5.60.0080.02515.61
5.5.50.0040.02515.58
5.5.40.0030.02315.44
5.5.30.0070.02015.63
5.5.20.0070.02615.62
5.5.10.0060.02015.42
5.5.00.0020.04315.51
5.4.450.0070.02715.01
5.4.440.0080.04215.14
5.4.430.0040.02915.04
5.4.420.0000.04015.01
5.4.410.0090.04214.90
5.4.400.0070.03814.67
5.4.390.0090.03614.86
5.4.380.0040.04414.76
5.4.370.0090.03514.72
5.4.360.0070.02614.82
5.4.350.0060.01914.79
5.4.340.0070.02314.85
5.4.330.0000.01110.96
5.4.320.0050.02014.99
5.4.310.0070.01914.94
5.4.300.0070.01815.02
5.4.290.0050.04215.06
5.4.280.0050.02015.02
5.4.270.0050.04214.86
5.4.260.0040.02414.97
5.4.250.0060.02314.78
5.4.240.0070.03714.86
5.4.230.0050.03215.04
5.4.220.0050.02215.07
5.4.210.0070.02214.70
5.4.200.0050.02014.89
5.4.190.0050.02314.84
5.4.180.0060.02014.99
5.4.170.0070.02214.97
5.4.160.0060.02314.83
5.4.150.0040.02214.85
5.4.140.0020.02313.65
5.4.130.0110.02513.62
5.4.120.0070.01713.79
5.4.110.0060.02013.64
5.4.100.0040.01913.54
5.4.90.0080.01813.53
5.4.80.0080.02713.64
5.4.70.0090.01513.54
5.4.60.0050.03213.64
5.4.50.0060.02313.58
5.4.40.0050.03713.50
5.4.30.0030.02213.48
5.4.20.0040.01913.71
5.4.10.0030.02213.47
5.4.00.0100.01813.44
5.3.290.0030.02312.54
5.3.280.0060.01812.50
5.3.270.0020.02612.48
5.3.260.0090.02012.49
5.3.250.0020.02212.47
5.3.240.0050.01912.42
5.3.230.0030.01812.47
5.3.220.0060.02812.33
5.3.210.0050.02012.36
5.3.200.0060.02112.37
5.3.190.0030.02412.37
5.3.180.0010.02212.52
5.3.170.0040.02012.46
5.3.160.0040.02212.34
5.3.150.0030.02912.45
5.3.140.0010.02812.26
5.3.130.0020.02112.49
5.3.120.0030.01812.40
5.3.110.0010.02112.44
5.3.100.0020.02012.08
5.3.90.0040.02112.18
5.3.80.0020.02011.91
5.3.70.0030.01512.03
5.3.60.0030.03312.18
5.3.50.0070.01812.10
5.3.40.0050.03512.13
5.3.30.0090.03612.18
5.3.20.0080.03311.90
5.3.10.0060.02511.85
5.3.00.0060.03311.87
5.2.170.0030.01610.90
5.2.160.0030.01510.90
5.2.150.0020.03610.94
5.2.140.0030.02510.88
5.2.130.0070.02510.79
5.2.120.0050.03110.90
5.2.110.0040.01910.79
5.2.100.0000.02710.92
5.2.90.0030.03210.85
5.2.80.0020.03510.83
5.2.70.0040.03410.86
5.2.60.0020.02810.81
5.2.50.0000.03610.79
5.2.40.0020.03210.85
5.2.30.0050.03310.79
5.2.20.0020.03510.79
5.2.10.0060.03110.79
5.2.00.0100.02810.79
5.1.60.0050.03010.79
5.1.50.0000.02910.79
5.1.40.0050.02710.79
5.1.30.0060.03010.79
5.1.20.0000.02410.79
5.1.10.0060.02510.79
5.1.00.0030.03210.79
5.0.50.0020.02710.79
5.0.40.0030.02210.79
5.0.30.0000.03910.79
5.0.20.0050.02210.79
5.0.10.0030.01510.79
5.0.00.0000.02110.79
4.4.90.0020.02210.79
4.4.80.0060.01610.79
4.4.70.0020.02110.79
4.4.60.0030.01710.79
4.4.50.0030.01810.79
4.4.40.0020.02810.79
4.4.30.0040.01710.79
4.4.20.0000.02110.79
4.4.10.0030.01710.79
4.4.00.0000.02410.79
4.3.110.0020.01510.79
4.3.100.0020.02010.79
4.3.90.0030.01410.79
4.3.80.0000.02910.79
4.3.70.0030.01810.79
4.3.60.0000.01910.79
4.3.50.0020.01710.79
4.3.40.0030.02210.79
4.3.30.0020.01910.79
4.3.20.0030.01910.79
4.3.10.0030.01810.79
4.3.00.0050.01810.79

preferences:
44.13 ms | 401 KiB | 5 Q