3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(dechex(128)); $wrongUtf8 = mb_convert_encoding('öäü', 'UTF-8', 'ISO-8859-1'); var_dump($wrongUtf8); $validUtf8 = mb_convert_encoding($wrongUtf8, 'ISO-8859-1', 'UTF-8'); var_dump($validUtf8); var_dump(preg_match('/^./su', $validUtf8), preg_match('/[\x80-\xFF]/', $validUtf8));

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)
8.3.60.0090.00916.88
8.3.50.0110.01118.32
8.3.40.0120.00318.57
8.3.30.0070.00719.04
8.3.20.0040.00420.25
8.3.10.0050.00321.82
8.3.00.0040.00419.38
8.2.180.0040.01518.53
8.2.170.0070.00719.34
8.2.160.0070.01022.96
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0040.00419.86
8.2.110.0070.00422.51
8.2.100.0070.00418.00
8.2.90.0000.00719.22
8.2.80.0040.00418.00
8.2.70.0050.00818.00
8.2.60.0000.00818.17
8.2.50.0040.00418.07
8.2.40.0050.00320.07
8.2.30.0040.00418.23
8.2.20.0000.00818.10
8.2.10.0040.00418.27
8.2.00.0070.00017.95
8.1.280.0080.00825.92
8.1.270.0000.00918.75
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0000.00822.93
8.1.230.0040.00817.42
8.1.220.0030.00617.80
8.1.210.0040.00418.77
8.1.200.0030.00617.50
8.1.190.0050.00317.73
8.1.180.0030.00618.10
8.1.170.0040.00420.63
8.1.160.0040.00422.08
8.1.150.0040.00419.06
8.1.140.0080.00017.64
8.1.130.0050.00318.00
8.1.120.0000.00817.76
8.1.110.0040.00417.64
8.1.100.0040.00417.72
8.1.90.0040.00417.70
8.1.80.0040.00417.70
8.1.70.0070.00017.76
8.1.60.0090.00017.75
8.1.50.0000.00917.84
8.1.40.0080.00017.75
8.1.30.0040.00417.98
8.1.20.0030.00617.77
8.1.10.0030.00517.75
8.1.00.0040.00417.81
8.0.300.0030.00518.77
8.0.290.0040.00317.00
8.0.280.0070.00018.40
8.0.270.0050.00217.39
8.0.260.0030.00317.36
8.0.250.0070.00017.23
8.0.240.0000.00817.23
8.0.230.0070.00017.24
8.0.220.0030.00317.07
8.0.210.0030.00317.16
8.0.200.0030.00317.10
8.0.190.0040.00417.24
8.0.180.0070.00017.08
8.0.170.0050.00317.29
8.0.160.0040.00417.16
8.0.150.0070.00017.07
8.0.140.0000.00817.15
8.0.130.0040.00413.60
8.0.120.0080.00017.19
8.0.110.0070.00017.13
8.0.100.0040.00417.21
8.0.90.0000.00817.06
8.0.80.0090.00817.16
8.0.70.0050.00217.18
8.0.60.0070.00017.20
8.0.50.0040.00417.04
8.0.30.0100.01017.19
8.0.20.0080.01117.40
8.0.10.0050.00317.06
8.0.00.0130.00816.99
7.4.330.0070.00015.03
7.4.320.0060.00016.78
7.4.300.0030.00316.80
7.4.290.0070.00016.79
7.4.280.0040.00716.89
7.4.270.0040.00416.74
7.4.260.0090.00016.77
7.4.250.0000.00816.80
7.4.240.0020.00516.89
7.4.230.0000.00716.79
7.4.220.0090.00916.83
7.4.210.0000.01616.89
7.4.200.0080.00016.78
7.4.160.0140.00716.93
7.4.150.0080.01117.40
7.4.140.0130.01017.86
7.4.130.0050.01316.78
7.4.120.0140.00716.71
7.4.110.0090.00916.76
7.4.100.0100.01416.68
7.4.90.0100.00716.75
7.4.80.0160.00619.39
7.4.70.0120.00916.72
7.4.60.0060.01616.63
7.4.50.0000.00816.50
7.4.40.0170.00016.74
7.4.30.0110.00716.92
7.4.00.0030.01214.94
7.3.330.0060.00013.32
7.3.320.0100.00513.29
7.3.310.0070.00016.55
7.3.300.0030.00316.47
7.3.290.0060.01116.54
7.3.280.0100.00816.46
7.3.270.0220.00317.40
7.3.260.0070.01016.68
7.3.250.0050.01616.80
7.3.240.0100.01316.49
7.3.230.0170.00716.52
7.3.210.0120.00616.58
7.3.200.0070.01019.39
7.3.190.0060.00916.65
7.3.180.0060.01016.52
7.3.170.0130.00616.57
7.3.160.0090.01216.48
7.2.330.0080.01216.87
7.2.320.0170.00016.81
7.2.310.0130.00316.87
7.2.300.0090.00916.78
7.2.290.0060.01216.90
7.2.60.0100.00717.21
7.2.00.0070.00719.33
7.1.200.0060.00616.04
7.1.100.0060.00618.38
7.1.70.0070.00717.46
7.1.60.0070.01719.50
7.1.50.0100.01317.18
7.1.00.0030.07322.43
7.0.200.0210.00714.88
7.0.140.0000.07721.98
7.0.60.0030.04319.96
7.0.50.0030.07017.85
7.0.40.0030.09020.28
7.0.30.0300.08020.22
7.0.20.0230.04320.18
7.0.10.0300.07720.11
7.0.00.0170.04320.05
5.6.280.0030.07320.84
5.6.210.0000.08720.70
5.6.200.0030.08318.19
5.6.190.0030.06720.35
5.6.180.0270.08320.29
5.6.170.0300.07720.40
5.6.160.0170.06320.44
5.6.150.0000.05718.21
5.6.140.0100.08018.14
5.6.130.0030.05018.12
5.6.120.0100.08321.11
5.6.110.0070.08321.04
5.6.100.0070.04021.05
5.6.90.0200.07021.01
5.6.80.0200.06720.42
5.6.70.0270.06720.38
5.5.350.0270.07720.44
5.5.340.0000.08017.96
5.5.330.0130.04720.21
5.5.320.0030.08720.57
5.5.310.0200.04720.29
5.5.300.0030.08717.98
5.5.290.0100.04318.00
5.5.280.0000.04720.98
5.5.270.0030.04720.76
5.5.260.0200.07320.86
5.5.250.0100.08320.57
5.5.240.0230.07020.15
5.4.450.0370.05019.58
5.4.440.0900.06019.48
5.4.430.0730.06019.40
5.4.420.0900.05719.48
5.4.410.0130.05318.93
5.4.400.0330.06718.50
5.4.390.0430.06718.63
5.4.380.0470.08018.67
5.4.370.0470.06018.74
5.4.360.0600.07018.65
5.4.350.0470.07718.65
5.4.340.0600.06018.49
5.4.320.0430.05318.62
5.4.310.0500.05718.68
5.4.300.0430.07018.49
5.4.290.0470.06318.55
5.4.280.0400.05318.52
5.4.270.0400.05018.52
5.4.260.0630.04718.70
5.4.250.0370.07018.69
5.4.240.0430.06718.52
5.4.230.0400.06318.60
5.4.220.0530.05318.70
5.4.210.0470.05318.76
5.4.200.0430.06716.46
5.4.190.0300.08018.55
5.4.180.0600.06718.70
5.4.170.0270.07018.50
5.4.160.0300.05318.59
5.4.150.0400.06018.72
5.4.140.0400.07316.08
5.4.130.0370.07016.20
5.4.120.0400.06016.30
5.4.110.0370.07316.39
5.4.100.0400.07016.21
5.4.90.0230.06016.24
5.4.80.0330.05016.17
5.4.70.0370.05716.13
5.4.60.0570.04716.16
5.4.50.0370.04716.28
5.4.40.0370.05716.27
5.4.30.0330.05316.09
5.4.20.0400.04016.00
5.4.10.0330.05316.27
5.4.00.0270.05315.62
5.3.290.0200.07014.59
5.3.280.0400.05014.52
5.3.270.0400.05714.52
5.3.260.0400.05714.60
5.3.250.0370.06314.58
5.3.240.0430.07714.52
5.3.230.0230.06714.54
5.3.220.0400.05714.57
5.3.210.0400.06714.47
5.3.200.0330.07014.55
5.3.190.0530.05714.66
5.3.180.0270.07014.51
5.3.170.0300.06014.66
5.3.160.0370.05014.46
5.3.150.0430.06714.48
5.3.140.0400.06714.55
5.3.130.0400.07014.64
5.3.120.0230.06314.64
5.3.110.0270.06314.46
5.3.100.0270.05714.00
5.3.90.0300.05014.11
5.3.80.0230.05713.91
5.3.70.0400.04713.93
5.3.60.0230.06014.00
5.3.50.0170.06013.84
5.3.40.0270.06013.98
5.3.30.0330.04713.90
5.3.20.0300.04713.60
5.3.10.0330.04313.61
5.3.00.0470.06713.60
5.2.170.0330.03311.31
5.2.160.0230.04711.20
5.2.150.0370.05011.19
5.2.140.0270.04011.14
5.2.130.0270.06011.08
5.2.120.0300.03711.09
5.2.110.0200.05011.10
5.2.100.0170.04711.15
5.2.90.0200.04711.26
5.2.80.0230.06011.03
5.2.70.0370.04711.16
5.2.60.0230.04311.20
5.2.50.0370.03311.05
5.2.40.0230.04710.96
5.2.30.0200.04310.96
5.2.20.0230.05010.89
5.2.10.0200.05310.83
5.2.00.0230.05010.75
5.1.60.0200.03310.05
5.1.50.0170.04710.06
5.1.40.0270.03310.04
5.1.30.0200.03310.39
5.1.20.0130.04310.34
5.1.10.0130.04010.13
5.1.00.0130.04010.04
5.0.50.0230.0178.56
5.0.40.0100.0308.40
5.0.30.0070.0478.20
5.0.20.0170.0278.39
5.0.10.0200.0238.29
5.0.00.0100.0478.25
4.4.90.0100.0235.93
4.4.80.0070.0235.82
4.4.70.0070.0335.89
4.4.60.0100.0275.82
4.4.50.0130.0205.89
4.4.40.0030.0375.90
4.4.30.0170.0175.88
4.4.20.0170.0305.94
4.4.10.0130.0335.95
4.4.00.0170.0435.90
4.3.110.0130.0305.85
4.3.100.0200.0305.74
4.3.90.0170.0235.89
4.3.80.0130.0405.86
4.3.70.0100.0205.83
4.3.60.0130.0305.81
4.3.50.0100.0305.89
4.3.40.0170.0375.76
4.3.30.0030.0334.55
4.3.20.0070.0234.54
4.3.10.0100.0174.57
4.3.00.0100.0276.80

preferences:
52.84 ms | 400 KiB | 5 Q