3v4l.org

run code in 300+ PHP versions simultaneously
<?php mb_internal_encoding("UTF-16"); $mb_string = 'žščř'; $l=mb_strlen($mb_string); for($i=0;$i<$l;$i++) { print(mb_substr($mb_string,$i,1)."<br/>"); } //$a = utf8_encode('Fön'); //$b = unpack('C*', $a); //var_dump($b); ?>

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)
8.3.60.0090.00618.27
8.3.50.0110.00622.12
8.3.40.0100.00318.43
8.3.30.0080.00618.92
8.3.20.0000.00820.04
8.3.10.0040.00422.14
8.3.00.0000.00722.57
8.2.180.0110.01116.38
8.2.170.0070.00722.96
8.2.160.0060.00920.48
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0050.00526.16
8.2.120.0040.00417.63
8.2.110.0060.00321.89
8.2.100.0040.00717.84
8.2.90.0040.00419.17
8.2.80.0040.00418.01
8.2.70.0000.00917.63
8.2.60.0030.00717.93
8.2.50.0090.00018.07
8.2.40.0050.00318.16
8.2.30.0040.00418.07
8.2.20.0000.00817.77
8.2.10.0050.00319.53
8.2.00.0040.00417.74
8.1.280.0150.00625.92
8.1.270.0040.00422.02
8.1.260.0040.00426.35
8.1.250.0050.00328.09
8.1.240.0060.00323.79
8.1.230.0000.01119.00
8.1.220.0040.00417.79
8.1.210.0040.00418.77
8.1.200.0060.00317.48
8.1.190.0040.00417.53
8.1.180.0050.00318.10
8.1.170.0060.00318.74
8.1.160.0080.00022.12
8.1.150.0040.00418.70
8.1.140.0030.00617.56
8.1.130.0040.00417.82
8.1.120.0040.00417.53
8.1.110.0040.00417.52
8.1.100.0070.00017.38
8.1.90.0030.00317.39
8.1.80.0000.00717.53
8.1.70.0050.00317.49
8.1.60.0000.00817.70
8.1.50.0000.00717.54
8.1.40.0040.00417.50
8.1.30.0040.00417.53
8.1.20.0080.00017.61
8.1.10.0000.00717.55
8.1.00.0040.00417.36
8.0.300.0080.00018.77
8.0.290.0000.00717.18
8.0.280.0040.00418.42
8.0.270.0040.00417.30
8.0.260.0000.00816.79
8.0.250.0000.00717.04
8.0.240.0060.00316.94
8.0.230.0000.00717.05
8.0.220.0000.00616.95
8.0.210.0030.00316.97
8.0.200.0000.00617.01
8.0.190.0000.00717.07
8.0.180.0070.00016.89
8.0.170.0080.00017.01
8.0.160.0040.00416.93
8.0.150.0000.00716.96
8.0.140.0000.00716.96
8.0.130.0030.00313.38
8.0.120.0070.00016.81
8.0.110.0000.00716.95
8.0.100.0000.00716.94
8.0.90.0000.00716.92
8.0.80.0090.00617.02
8.0.70.0040.00417.00
8.0.60.0030.00516.77
8.0.50.0040.00416.94
8.0.30.0120.01517.03
8.0.20.0120.00717.40
8.0.10.0040.00416.95
8.0.00.0080.01016.71
7.4.330.0000.00615.00
7.4.320.0000.00616.54
7.4.300.0030.00316.46
7.4.290.0000.00716.51
7.4.280.0000.01116.63
7.4.270.0040.00416.49
7.4.260.0030.00313.37
7.4.250.0050.00216.54
7.4.240.0060.00116.46
7.4.230.0000.00716.68
7.4.220.0120.00316.53
7.4.210.0080.00916.52
7.4.200.0000.00716.57
7.4.190.0030.00316.54
7.4.160.0060.01316.60
7.4.150.0120.00617.40
7.4.140.0060.01117.86
7.4.130.0140.00716.51
7.4.120.0060.01116.51
7.4.110.0070.01016.29
7.4.100.0030.01316.36
7.4.90.0170.00016.53
7.4.80.0060.01219.39
7.4.70.0120.00316.38
7.4.60.0130.00916.40
7.4.50.0080.00516.48
7.4.40.0100.00722.77
7.4.30.0060.01216.72
7.4.00.0100.00614.87
7.3.330.0030.00313.16
7.3.320.0000.00613.22
7.3.310.0070.00016.35
7.3.300.0030.00316.33
7.3.290.0110.00416.25
7.3.280.0110.00816.38
7.3.270.0070.01017.40
7.3.260.0100.01616.59
7.3.250.0120.01016.57
7.3.240.0040.01216.60
7.3.230.0090.01516.39
7.3.210.0030.01516.51
7.3.200.0190.00019.39
7.3.190.0090.00616.25
7.3.180.0000.01516.34
7.3.170.0120.00316.29
7.3.160.0080.01316.33
7.3.120.0070.00714.71
7.3.110.0080.00814.63
7.3.100.0070.00714.69
7.3.90.0070.00714.61
7.3.80.0030.00714.87
7.3.70.0040.00814.90
7.3.60.0030.00614.64
7.3.50.0140.00314.85
7.3.40.0030.01014.53
7.3.30.0030.00714.84
7.3.20.0100.00716.38
7.3.10.0020.01016.61
7.3.00.0040.00816.72
7.2.330.0070.01016.70
7.2.320.0090.01516.48
7.2.310.0140.00816.75
7.2.300.0030.01316.41
7.2.290.0160.00016.51
7.2.240.0070.00414.80
7.2.230.0030.01415.19
7.2.220.0000.00915.06
7.2.210.0060.00614.95
7.2.200.0000.01215.14
7.2.190.0040.00814.99
7.2.180.0130.00014.69
7.2.170.0000.01815.04
7.2.160.0030.01315.12
7.2.150.0100.00316.93
7.2.140.0070.00317.10
7.2.130.0050.00816.94
7.2.120.0040.00716.78
7.2.110.0080.00616.99
7.2.100.0040.00716.79
7.2.90.0030.00916.94
7.2.80.0060.00616.97
7.2.70.0040.01016.64
7.2.60.0040.00816.77
7.2.50.0070.00516.89
7.2.40.0060.00816.77
7.2.30.0080.00516.78
7.2.20.0030.00916.74
7.2.10.0070.00916.93
7.2.00.0070.00617.59
7.1.330.0040.00715.51
7.1.320.0110.00315.79
7.1.310.0030.01215.96
7.1.300.0000.01315.79
7.1.290.0080.00015.86
7.1.280.0090.00915.87
7.1.270.0030.00715.79
7.1.260.0030.01015.90
7.1.250.0050.00615.90
7.1.200.0100.00315.86
7.1.100.0030.00918.30
7.1.70.0000.00916.78
7.1.60.0000.02119.82
7.1.50.0120.00617.10
7.1.00.0070.07022.30
7.0.200.0170.00316.68
7.0.140.0000.07021.92
7.0.60.0030.08019.83
7.0.50.0070.09017.82
7.0.40.0030.07020.21
7.0.30.0270.04320.09
7.0.20.0230.03320.04
7.0.10.0130.07320.16
7.0.00.0070.06720.03
5.6.280.0030.07320.86
5.6.210.0000.08720.66
5.6.200.0100.03718.13
5.6.190.0030.04720.38
5.6.180.3230.04320.57
5.6.170.0270.04320.46
5.6.160.0070.08320.51
5.6.150.0030.06318.09
5.6.140.0030.07018.12
5.6.130.0100.07718.19
5.6.120.0070.08321.01
5.6.110.0070.05321.04
5.6.100.0100.08721.00
5.6.90.0070.08720.87
5.6.80.0030.06020.38
5.6.70.4600.03720.48
5.5.350.0170.04320.46
5.5.340.0070.08018.01
5.5.330.0030.05020.40
5.5.320.3200.03720.18
5.5.310.0330.07020.12
5.5.300.0200.06717.98
5.5.290.0100.08017.88
5.5.280.0100.08720.86
5.5.270.0070.03720.65
5.5.260.0070.08320.93
5.5.250.0100.06720.61
5.5.240.0270.06720.25
5.4.450.0570.06319.63
5.4.440.0700.06019.59
5.4.430.0170.05019.34
5.4.420.0200.04719.15
5.4.410.0100.05719.20
5.4.400.0170.04318.83
5.4.390.0270.05718.72
5.4.380.0330.04318.74
5.4.370.0170.05018.70
5.4.360.0200.04718.69
5.4.350.0130.05718.61
5.4.340.0170.05018.43
5.4.320.0070.03512.46
5.4.310.0040.03912.45
5.4.300.0110.03612.45
5.4.290.0060.04012.45
5.4.280.0050.03712.35
5.4.270.0090.03612.35
5.4.260.0030.04012.35
5.4.250.0040.03912.35
5.4.240.0030.03812.35
5.4.230.0100.04012.34
5.4.220.0100.03712.34
5.4.210.0070.03412.34
5.4.200.0060.03712.34
5.4.190.0100.05018.74
5.4.180.0170.04318.92
5.4.170.0070.05318.92
5.4.160.0100.06019.15
5.4.150.0000.08318.98
5.4.140.0030.05316.39
5.4.130.0100.04316.57
5.4.120.0070.05016.48
5.4.110.0130.05716.34
5.4.100.0030.05716.61
5.4.90.0000.06316.49
5.4.80.0030.07016.34
5.4.70.0100.04716.51
5.4.60.0130.04316.54
5.4.50.0130.04016.40
5.4.40.0130.04716.57
5.4.30.0030.05316.40
5.4.20.0130.06716.32
5.4.10.0070.05716.49
5.4.00.0070.04715.76
5.3.290.0070.04712.80
5.3.280.0060.03912.71
5.3.270.0070.05314.60
5.3.260.0100.05014.41
5.3.250.0070.07314.75
5.3.240.0100.04714.77
5.3.230.0200.05714.75
5.3.220.0130.04314.51
5.3.210.0030.06014.73
5.3.200.0070.06014.49
5.3.190.0100.05014.49
5.3.180.0100.04314.62
5.3.170.0070.07014.56
5.3.160.0100.04714.60
5.3.150.0030.05314.54
5.3.140.0130.04714.71
5.3.130.0130.05714.59
5.3.120.0030.07014.69
5.3.110.0100.05014.36
5.3.100.0070.06014.17
5.3.90.0100.04714.06
5.3.80.0100.05314.09
5.3.70.0070.05013.94
5.3.60.0070.05014.05
5.3.50.0030.05713.87
5.3.40.0100.04714.13
5.3.30.0030.07313.91
5.3.20.0130.06013.75
5.3.10.0030.05313.63
5.3.00.0130.06313.73
5.2.170.0000.04711.26
5.2.160.0130.04711.25
5.2.150.0070.04711.19
5.2.140.0100.03711.07
5.2.130.0030.04311.11
5.2.120.0130.03011.24
5.2.110.0070.03711.24
5.2.100.0030.04311.29
5.2.90.0070.04011.17
5.2.80.0070.04010.90
5.2.70.0130.04711.31
5.2.60.0100.03711.18
5.2.50.0030.04711.23
5.2.40.0070.05011.04
5.2.30.0070.04011.19
5.2.20.0130.03311.18
5.2.10.0030.04010.73
5.2.00.0030.04310.76
5.1.60.0200.02710.04
5.1.50.0070.04010.07
5.1.40.0000.03710.16
5.1.30.0030.03710.52
5.1.20.0070.04010.47
5.1.10.0070.04710.22
5.1.00.0030.03710.21
5.0.50.0000.0308.59
5.0.40.0100.0278.68
5.0.30.0130.0378.21
5.0.20.0000.0308.18
5.0.10.0030.0278.11
5.0.00.0000.0438.14
4.4.90.0000.0237.49
4.4.80.0000.0237.49
4.4.70.0030.0207.49
4.4.60.0000.0237.49
4.4.50.0070.0177.49
4.4.40.0030.0337.49
4.4.30.0030.0277.49
4.4.20.0000.0237.49
4.4.10.0170.0137.49
4.4.00.0070.0307.49
4.3.110.0000.0237.49
4.3.100.0030.0307.49
4.3.90.0070.0237.49
4.3.80.0030.0337.49
4.3.70.0100.0137.49
4.3.60.0000.0237.49
4.3.50.0000.0237.49
4.3.40.0000.0407.49
4.3.30.0030.0207.49
4.3.20.0030.0237.49
4.3.10.0030.0207.49
4.3.00.0100.0276.73

preferences:
37.26 ms | 401 KiB | 5 Q