3v4l.org

run code in 300+ PHP versions simultaneously
<?php $cnStr = "中"; //utf8的中文 //unicode $code = unpack("H6codes", $cnStr); var_dump($code); //汉字 $cnStr = pack("H6", $code['codes']); echo $cnStr;

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)
8.3.60.0150.00018.18
8.3.50.0250.00322.06
8.3.40.0100.00718.89
8.3.30.0100.00319.09
8.3.20.0080.00020.05
8.3.10.0040.00421.87
8.3.00.0050.00322.39
8.2.180.0110.00416.50
8.2.170.0100.00322.96
8.2.160.0070.00720.94
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0080.00019.36
8.2.110.0070.00322.20
8.2.100.0040.00719.34
8.2.90.0000.00819.18
8.2.80.0000.00818.03
8.2.70.0060.00317.50
8.2.60.0040.00817.80
8.2.50.0030.00618.07
8.2.40.0050.00318.22
8.2.30.0000.01018.06
8.2.20.0060.00317.60
8.2.10.0070.00319.59
8.2.00.0000.00717.75
8.1.280.0120.00325.92
8.1.270.0040.00422.14
8.1.260.0080.00326.35
8.1.250.0050.00328.09
8.1.240.0040.00723.97
8.1.230.0080.00418.85
8.1.220.0040.00417.74
8.1.210.0030.00518.77
8.1.200.0100.00017.22
8.1.190.0000.00817.28
8.1.180.0030.00518.10
8.1.170.0030.00918.48
8.1.160.0000.00921.95
8.1.150.0000.00818.46
8.1.140.0040.00417.39
8.1.130.0040.00417.83
8.1.120.0040.00417.43
8.1.110.0040.00417.28
8.1.100.0040.00417.38
8.1.90.0000.00717.33
8.1.80.0000.00717.29
8.1.70.0000.00717.36
8.1.60.0000.00817.55
8.1.50.0060.00317.45
8.1.40.0030.00717.45
8.1.30.0030.00617.55
8.1.20.0000.00817.61
8.1.10.0030.00617.45
8.1.00.0040.00417.50
8.0.300.0040.00418.77
8.0.290.0060.00317.18
8.0.280.0000.00718.50
8.0.270.0040.00417.26
8.0.260.0000.00616.75
8.0.250.0030.00317.01
8.0.240.0030.00916.93
8.0.230.0040.00416.85
8.0.220.0030.00316.72
8.0.210.0070.00016.81
8.0.200.0040.00416.89
8.0.190.0000.00716.77
8.0.180.0040.00416.75
8.0.170.0000.00716.81
8.0.160.0000.00716.85
8.0.150.0040.00416.74
8.0.140.0000.00916.70
8.0.130.0030.00313.27
8.0.120.0070.00016.70
8.0.110.0000.00716.83
8.0.100.0040.00416.81
8.0.90.0030.00516.81
8.0.80.0070.01016.89
8.0.70.0000.00716.82
8.0.60.0040.00416.84
8.0.50.0030.00616.81
8.0.30.0070.01217.06
8.0.20.0130.01017.40
8.0.10.0000.00816.96
8.0.00.0100.00816.75
7.4.330.0000.00515.05
7.4.320.0000.00616.54
7.4.300.0000.00616.48
7.4.290.0030.00316.62
7.4.280.0000.00816.43
7.4.270.0080.00016.55
7.4.260.0000.00716.42
7.4.250.0030.00516.42
7.4.240.0070.00016.47
7.4.230.0080.00016.33
7.4.220.0110.00716.35
7.4.210.0120.00616.51
7.4.200.0030.00316.25
7.4.190.0080.00016.70
7.4.160.0070.01416.40
7.4.150.0030.01417.40
7.4.140.0040.01517.86
7.4.130.0130.00616.34
7.4.120.0090.00816.47
7.4.110.0160.00016.43
7.4.100.0100.01316.48
7.4.90.0030.01316.61
7.4.80.0110.00719.39
7.4.70.0080.00816.58
7.4.60.0110.00516.43
7.4.50.0030.00616.35
7.4.40.0100.00722.77
7.4.30.0090.00916.66
7.4.00.0130.00314.86
7.3.330.0070.00013.13
7.3.320.0020.00213.18
7.3.310.0020.00516.32
7.3.300.0000.00716.31
7.3.290.0030.01016.27
7.3.280.0070.01016.22
7.3.270.0120.00617.40
7.3.260.0160.02016.42
7.3.250.0100.00916.43
7.3.240.0130.01016.55
7.3.230.0040.01416.60
7.3.210.0030.01316.51
7.3.200.0080.01119.39
7.3.190.0120.00916.60
7.3.180.0090.00616.28
7.3.170.0160.00316.64
7.3.160.0100.00616.31
7.3.120.0000.01614.75
7.3.10.0080.00316.46
7.3.00.0100.00016.80
7.2.330.0130.00616.49
7.2.320.0170.00916.78
7.2.310.0110.01116.48
7.2.300.0130.00316.25
7.2.290.0100.00616.56
7.2.130.0110.00316.61
7.2.120.0060.00316.83
7.2.110.0060.00616.97
7.2.100.0070.00417.04
7.2.90.0100.00016.82
7.2.80.0060.00916.71
7.2.70.0090.00317.02
7.2.60.0080.00416.88
7.2.50.0040.01116.75
7.2.40.0070.00716.90
7.2.30.0030.00916.90
7.2.20.0120.00316.56
7.2.10.0040.00717.02
7.2.00.0070.00618.16
7.1.250.0100.00315.56
7.1.100.0060.00317.98
7.1.70.0100.00617.16
7.1.60.0150.00619.82
7.1.50.0120.00317.00
7.1.00.0000.07322.39
7.0.200.0060.00616.68
7.0.140.0100.06722.15
7.0.60.0100.07320.01
7.0.50.0070.03717.66
7.0.40.0100.08020.34
7.0.30.0400.04320.20
7.0.20.0230.07720.17
7.0.10.0030.04320.17
7.0.00.0100.04720.20
5.6.210.0030.04020.68
5.6.200.0030.04018.21
5.6.190.0100.07320.32
5.6.180.3230.04320.61
5.6.170.0400.02720.50
5.6.160.0070.04020.41
5.6.150.0100.07718.18
5.6.140.0130.03318.12
5.6.130.0100.07718.18
5.6.120.0100.07021.01
5.6.110.0130.06720.97
5.6.100.0070.08320.95
5.6.90.0070.08321.00
5.6.80.0030.04320.50
5.6.70.0070.08020.41
5.5.350.0200.08320.43
5.5.340.0100.07717.96
5.5.330.0070.04720.12
5.5.320.0400.04020.34
5.5.310.0230.06320.21
5.5.300.0070.04017.98
5.5.290.0030.08317.95
5.5.280.0070.08720.79
5.5.270.0000.09020.88
5.5.260.0100.08020.75
5.5.250.0070.08020.65
5.5.240.0230.07020.06
5.4.450.0370.04019.58
5.4.440.0370.04719.39
5.4.430.0530.05719.55
5.4.420.0470.04019.48
5.4.410.0400.05319.32
5.4.400.0400.05019.24
5.4.390.0470.06718.93
5.4.380.0570.06319.21
5.4.370.0470.03719.13
5.4.360.0500.07019.13
5.4.350.0500.06719.18
5.4.340.0430.03719.25
5.4.320.0370.03718.90
5.4.310.0300.04319.24
5.4.300.0370.04319.13
5.4.290.0400.03719.10
5.4.280.0470.06019.13
5.4.270.0530.06319.08
5.4.260.0530.05719.24
5.4.250.0400.06719.04
5.4.240.0500.06718.91
5.4.230.0370.04319.04
5.4.220.0430.06019.07
5.4.210.0530.05718.92
5.4.200.0400.06719.05
5.4.190.0530.06018.87
5.4.180.0630.05319.07
5.4.170.0430.06718.75
5.4.160.0530.07018.86
5.4.150.0570.06318.91
5.4.140.0530.06016.29
5.4.130.0600.05316.34
5.4.120.0430.03716.26
5.4.110.0370.04316.34
5.4.100.0330.04016.21
5.4.90.0500.04316.24
5.4.80.0470.03716.18
5.4.70.0500.06716.29
5.4.60.0530.04316.47
5.4.50.0500.03716.20
5.4.40.0530.07016.20
5.4.30.0500.05016.38
5.4.20.0400.06016.31
5.4.10.0470.04016.46
5.4.00.0470.05315.71
5.3.290.0270.06014.49
5.3.280.0470.07314.46
5.3.270.0470.05014.55
5.3.260.0430.07014.58
5.3.250.0430.04014.56
5.3.240.0600.05314.65
5.3.230.0400.04014.52
5.3.220.0630.05014.44
5.3.210.0430.04714.39
5.3.200.0670.05014.40
5.3.190.0400.03714.45
5.3.180.0400.03714.61
5.3.170.0570.05714.65
5.3.160.0530.07014.41
5.3.150.0600.04714.35
5.3.140.0570.05314.45
5.3.130.0470.03714.38
5.3.120.0430.03714.49
5.3.110.0430.04014.40
5.3.100.0430.04313.87
5.3.90.0470.03313.87
5.3.80.0430.06713.98
5.3.70.0530.05013.86
5.3.60.0400.05013.78
5.3.50.0400.04013.92
5.3.40.0430.07013.97
5.3.30.0470.06013.75
5.3.20.0500.03713.78
5.3.10.0400.03313.74
5.3.00.0430.04013.49
5.2.170.0370.04010.98
5.2.160.0430.03311.02
5.2.150.0330.04311.03
5.2.140.0500.04011.00
5.2.130.0470.02011.15
5.2.120.0370.05011.16
5.2.110.0400.02710.95
5.2.100.0400.04310.99
5.2.90.0370.03311.15
5.2.80.0430.05010.93
5.2.70.0470.03710.93
5.2.60.0470.03310.91
5.2.50.0400.04710.89
5.2.40.0470.05011.00
5.2.30.0470.04310.86
5.2.20.0430.05011.06
5.2.10.0300.03010.90
5.2.00.0330.04010.61
5.1.60.0300.02710.02
5.1.50.0370.03010.02
5.1.40.0300.02710.02
5.1.30.0200.02710.26
5.1.20.0270.02710.45
5.1.10.0230.02310.02
5.1.00.0270.02010.23
5.0.50.0170.02010.02
5.0.40.0100.02310.02
5.0.30.0070.03310.02
5.0.20.0130.01710.02
5.0.10.0170.01710.02
5.0.00.0130.03010.02
4.4.90.0200.02710.02
4.4.80.0070.03010.02
4.4.70.0230.02710.02
4.4.60.0230.02710.02
4.4.50.0270.04010.02
4.4.40.0230.03710.02
4.4.30.0130.02710.02
4.4.20.0100.01710.02
4.4.10.0100.01710.02
4.4.00.0130.02710.02
4.3.110.0130.01310.02
4.3.100.0170.01010.02
4.3.90.0170.01010.02
4.3.80.0130.02310.02
4.3.70.0100.01710.02
4.3.60.0130.01310.02
4.3.50.0100.02010.02
4.3.40.0100.02310.02
4.3.30.0070.02710.02
4.3.20.0070.01310.02
4.3.10.0030.02010.02
4.3.00.0070.01710.02

preferences:
43.51 ms | 401 KiB | 5 Q