3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd \xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd \xef\xbf\xbd\xef\xbf\xbd \xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd \xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd"; var_dump(iconv('cp1251', 'UTF-8', $str));

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)
8.3.60.0110.00416.50
8.3.50.0150.00316.18
8.3.40.0120.00318.72
8.3.30.0070.00718.54
8.3.20.0050.00220.30
8.3.10.0070.00021.90
8.3.00.0030.00617.48
8.2.180.0130.00718.66
8.2.170.0140.00422.96
8.2.160.0030.01022.25
8.2.150.0080.00024.18
8.2.140.0000.00724.66
8.2.130.0040.00419.30
8.2.120.0080.00026.35
8.2.110.0030.00620.35
8.2.100.0100.00617.91
8.2.90.0000.00819.09
8.2.80.0060.00317.97
8.2.70.0040.00417.50
8.2.60.0000.00817.93
8.2.50.0050.00318.10
8.2.40.0050.00320.20
8.2.30.0040.00419.10
8.2.20.0000.00817.86
8.2.10.0040.00418.04
8.2.00.0050.00318.02
8.1.280.0150.00425.92
8.1.270.0000.00823.88
8.1.260.0060.00326.35
8.1.250.0000.00728.09
8.1.240.0000.01123.86
8.1.230.0080.00320.87
8.1.220.0080.00017.74
8.1.210.0040.00418.77
8.1.200.0030.00617.13
8.1.190.0030.00617.10
8.1.180.0030.00518.10
8.1.170.0000.00918.54
8.1.160.0060.00319.05
8.1.150.0040.00418.79
8.1.140.0000.00719.51
8.1.130.0030.00318.82
8.1.120.0040.00417.43
8.1.110.0000.00817.35
8.1.100.0000.00817.31
8.1.90.0030.00517.36
8.1.80.0000.00817.42
8.1.70.0030.00317.37
8.1.60.0030.00517.49
8.1.50.0000.00717.34
8.1.40.0020.00517.48
8.1.30.0030.00617.63
8.1.20.0040.00417.57
8.1.10.0080.00017.45
8.1.00.0050.00317.34
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0070.00018.25
8.0.270.0030.00317.05
8.0.260.0050.00316.81
8.0.250.0070.00016.99
8.0.240.0050.00316.94
8.0.230.0030.00316.98
8.0.220.0000.00816.89
8.0.210.0000.00916.78
8.0.200.0000.00716.87
8.0.190.0060.00316.85
8.0.180.0000.00916.84
8.0.170.0070.00016.80
8.0.160.0070.00016.94
8.0.150.0000.00716.79
8.0.140.0030.00316.88
8.0.130.0040.00313.27
8.0.120.0030.00616.82
8.0.110.0060.00316.86
8.0.100.0060.00316.95
8.0.90.0000.00816.92
8.0.80.0120.00617.02
8.0.70.0030.00616.87
8.0.60.0000.00916.95
8.0.50.0050.00517.02
8.0.30.0110.00817.24
8.0.20.0070.01517.40
8.0.10.0050.00517.13
8.0.00.0060.01516.81
7.4.330.0000.00515.55
7.4.320.0000.00616.45
7.4.300.0030.00316.34
7.4.290.0050.00316.50
7.4.280.0030.00616.28
7.4.270.0040.00416.34
7.4.260.0000.00613.33
7.4.250.0090.00316.59
7.4.240.0000.00916.73
7.4.230.0040.00416.79
7.4.220.0080.01416.71
7.4.210.0140.00316.61
7.4.200.0050.00316.59
7.4.160.0120.00716.49
7.4.150.0100.01017.40
7.4.140.0120.01117.86
7.4.130.0060.01516.50
7.4.120.0110.01016.60
7.4.110.0120.00816.53
7.4.100.0130.01316.44
7.4.90.0060.01316.63
7.4.80.0060.01319.39
7.4.70.0130.01016.43
7.4.60.0120.01216.37
7.4.50.0090.00816.53
7.4.40.0100.01116.39
7.4.30.0130.01216.25
7.4.20.0110.01616.52
7.4.10.0060.01916.30
7.4.00.0030.01715.41
7.3.330.0020.00213.18
7.3.320.0020.00213.16
7.3.310.0020.00716.32
7.3.300.0000.00816.34
7.3.290.0060.01216.34
7.3.280.0090.01016.30
7.3.270.0100.01017.40
7.3.260.0130.00716.68
7.3.250.0090.01616.43
7.3.240.0120.01216.45
7.3.230.0100.01016.55
7.3.210.0110.01416.61
7.3.200.0060.01516.49
7.3.190.0140.00916.31
7.3.180.0100.01316.43
7.3.170.0130.00716.46
7.3.160.0070.01516.29
7.3.150.0050.01916.12
7.3.140.0120.01616.13
7.3.130.0070.02016.51
7.3.120.0110.00915.28
7.3.110.0080.01115.38
7.3.100.0070.01415.19
7.3.90.0100.00915.50
7.3.80.0070.01015.43
7.3.70.0080.00915.38
7.3.60.0060.00915.36
7.3.50.0080.00915.37
7.3.40.0030.01515.35
7.3.30.0040.01715.38
7.3.20.0120.00816.48
7.3.10.0060.01016.55
7.3.00.0070.00916.45
7.2.330.0130.00616.39
7.2.320.0060.01216.36
7.2.310.0140.00616.36
7.2.300.0140.01116.66
7.2.290.0120.01416.48
7.2.280.0120.01216.10
7.2.270.0100.01416.06
7.2.260.0160.00716.24
7.2.250.0050.01815.65
7.2.240.0050.01515.55
7.2.230.0150.00615.55
7.2.220.0070.01115.19
7.2.210.0080.01015.35
7.2.200.0110.00815.35
7.2.190.0040.01315.25
7.2.180.0110.00615.40
7.2.170.0080.01115.30
7.2.160.0100.01115.57
7.2.150.0090.01216.62
7.2.140.0080.01316.69
7.2.130.0060.01216.63
7.2.120.0080.01416.63
7.2.110.0120.01116.45
7.2.100.0080.01216.53
7.2.90.0060.01316.68
7.2.80.0030.01816.56
7.2.70.0280.00516.73
7.2.60.0080.00816.75
7.2.50.0130.00616.83
7.2.40.0090.00716.57
7.2.30.0050.01216.41
7.2.20.0070.01216.51
7.2.10.0050.01116.66
7.2.00.0110.00917.46
7.1.330.0080.01015.80
7.1.320.0090.00715.88
7.1.310.0070.00915.78
7.1.300.0100.00915.87
7.1.290.0100.00715.63
7.1.280.0060.01115.85
7.1.270.0130.01315.60
7.1.260.0030.01315.77
7.1.250.0070.01315.81
7.1.240.0140.01015.65
7.1.230.0150.00915.74
7.1.220.0130.00815.62
7.1.210.0120.01115.30
7.1.200.0060.01215.75
7.1.190.0070.01215.43
7.1.180.0150.00615.42
7.1.170.0110.00715.54
7.1.160.0050.01115.34
7.1.150.0070.01015.63
7.1.140.0060.01215.63
7.1.130.0200.00615.61
7.1.120.0160.01115.28
7.1.110.0280.01415.61
7.1.100.0100.00716.85
7.1.90.0160.00315.54
7.1.80.0110.01015.53
7.1.70.0100.00916.46
7.1.60.0160.01025.34
7.1.50.0170.01025.28
7.1.40.0060.01625.15
7.1.30.0080.01525.25
7.1.20.0120.01325.21
7.1.10.0080.00916.23
7.1.00.0080.01216.20
7.0.330.0120.01215.37
7.0.320.0140.00715.14
7.0.310.0110.01115.46
7.0.300.0150.00415.32
7.0.290.0070.01115.42
7.0.280.0060.01115.33
7.0.270.0140.00815.27
7.0.260.0050.01615.24
7.0.250.0080.01215.32
7.0.240.0130.00515.26
7.0.230.0140.00415.39
7.0.220.0160.00615.41
7.0.210.0140.00415.16
7.0.200.0070.01115.93
7.0.190.0040.01315.95
7.0.180.0100.00915.88
7.0.170.0110.01015.77
7.0.160.0080.00815.80
7.0.150.0070.01215.81
7.0.140.0280.00715.96
7.0.130.0050.01315.99
7.0.120.0120.00615.97
7.0.110.0060.01216.00
7.0.100.0080.01215.86
7.0.90.0030.01715.88
7.0.80.0060.01215.77
7.0.70.0120.00615.93
7.0.60.0110.00715.79
7.0.50.0090.01215.81
7.0.40.0040.01115.84
7.0.30.0050.01215.72
7.0.20.0060.01215.76
7.0.10.0080.00815.76
7.0.00.0080.00816.01
5.6.400.0160.00816.25
5.6.390.0140.01016.17
5.6.380.0130.01315.69
5.6.370.0060.01615.99
5.6.360.0090.01215.96
5.6.350.0130.01315.95
5.6.340.0100.01016.23
5.6.330.0050.01516.06
5.6.320.0130.00816.11
5.6.310.0100.01516.06
5.6.300.0160.00615.98
5.6.290.0100.01015.89
5.6.280.0140.00815.96
5.6.270.0140.01216.09
5.6.260.0110.01416.21
5.6.250.0140.01415.89
5.6.240.0140.01416.07
5.6.230.0090.01615.91
5.6.220.0110.01015.88
5.6.210.0110.01115.82
5.6.200.0130.01315.37
5.6.190.0100.01315.84
5.6.180.0180.00315.82
5.6.170.0070.01315.72
5.6.160.0120.00915.74
5.6.150.0090.01215.67
5.6.140.0120.00915.45
5.6.130.0180.00915.85
5.6.120.0090.01415.55
5.6.110.0060.01615.83
5.6.100.0160.01015.80
5.6.90.0060.01615.68
5.6.80.0110.01115.73
5.6.70.0110.01115.85
5.6.60.0200.00815.61
5.6.50.0190.01115.72
5.6.40.0120.01415.63
5.6.30.0170.01015.83
5.6.20.0050.01615.49
5.6.10.0100.01315.57
5.6.00.0060.01515.90

preferences:
57.27 ms | 401 KiB | 5 Q