3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo mb_convert_encoding ( 'äìè', 'ISO-8859-1', 'windows-1251' ); echo "\n"; echo mb_convert_encoding ( 'äìè', 'windows-1251', 'ISO-8859-1' );

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)
8.3.60.0070.01116.63
8.3.50.0090.00916.05
8.3.40.0040.01118.76
8.3.30.0080.00818.54
8.3.20.0080.00020.10
8.3.10.0050.00323.66
8.3.00.0030.00619.41
8.2.180.0060.00918.42
8.2.170.0140.00022.96
8.2.160.0030.01620.45
8.2.150.0070.00024.18
8.2.140.0040.00424.66
8.2.130.0000.00721.30
8.2.120.0000.00926.35
8.2.110.0090.00020.75
8.2.100.0080.00417.97
8.2.90.0090.00019.52
8.2.80.0050.00318.16
8.2.70.0080.00017.73
8.2.60.0000.00818.18
8.2.50.0040.00418.18
8.2.40.0040.00422.28
8.2.30.0040.00419.29
8.2.20.0030.00518.34
8.2.10.0000.00718.17
8.2.00.0000.00818.20
8.1.280.0040.01125.92
8.1.270.0090.00323.99
8.1.260.0040.00426.35
8.1.250.0030.00628.09
8.1.240.0070.00323.98
8.1.230.0040.00821.08
8.1.220.0040.00417.79
8.1.210.0060.00318.77
8.1.200.0040.00417.48
8.1.190.0050.00317.35
8.1.180.0030.00518.10
8.1.170.0040.00418.58
8.1.160.0040.00418.95
8.1.150.0000.00720.74
8.1.140.0080.00019.54
8.1.130.0030.00318.94
8.1.120.0030.00517.50
8.1.110.0080.00017.52
8.1.100.0000.00717.60
8.1.90.0050.00517.38
8.1.80.0030.00517.50
8.1.70.0030.00317.39
8.1.60.0000.00817.64
8.1.50.0030.00517.43
8.1.40.0030.00517.59
8.1.30.0040.00417.74
8.1.20.0000.00817.72
8.1.10.0080.00017.46
8.1.00.0040.00417.62
8.0.300.0070.00018.77
8.0.290.0000.00816.75
8.0.280.0030.00318.54
8.0.270.0030.00317.18
8.0.260.0030.00316.76
8.0.250.0070.00016.99
8.0.240.0030.00316.99
8.0.230.0030.00316.92
8.0.220.0030.00316.88
8.0.210.0070.00016.94
8.0.200.0070.00016.94
8.0.190.0000.00916.83
8.0.180.0060.00616.91
8.0.170.0040.00416.97
8.0.160.0040.00416.80
8.0.150.0040.00416.84
8.0.140.0000.00716.89
8.0.130.0060.00013.29
8.0.120.0060.00316.82
8.0.110.0000.00716.94
8.0.100.0000.00716.83
8.0.90.0040.00416.82
8.0.80.0110.01416.91
8.0.70.0000.00816.84
8.0.60.0050.00216.82
8.0.50.0040.00416.77
8.0.30.0130.00517.07
8.0.20.0090.01017.40
8.0.10.0040.00416.72
8.0.00.0090.00916.65
7.4.330.0000.00715.55
7.4.320.0000.00716.57
7.4.300.0040.00416.52
7.4.290.0070.00216.48
7.4.280.0040.00416.39
7.4.270.0030.00316.59
7.4.260.0030.00313.20
7.4.250.0030.00416.34
7.4.240.0040.00416.49
7.4.230.0030.00316.68
7.4.220.0000.02316.54
7.4.210.0040.01516.60
7.4.200.0040.00416.23
7.4.160.0080.00816.48
7.4.150.0110.00817.40
7.4.140.0110.00817.86
7.4.130.0120.01216.45
7.4.120.0130.00916.52
7.4.110.0180.00016.22
7.4.100.0120.00916.39
7.4.90.0140.00316.39
7.4.80.0060.01119.39
7.4.70.0140.00416.44
7.4.60.0150.00016.35
7.4.50.0080.00516.51
7.4.40.0120.00316.38
7.4.30.0060.01216.63
7.4.00.0100.00714.80
7.3.330.0000.00613.14
7.3.320.0050.00013.09
7.3.310.0030.00316.22
7.3.300.0000.00616.25
7.3.290.0030.00316.24
7.3.280.0090.00816.26
7.3.270.0050.01117.40
7.3.260.0090.00916.34
7.3.250.0090.01116.25
7.3.240.0090.00816.45
7.3.230.0160.00316.47
7.3.210.0100.00716.48
7.3.200.0110.00516.25
7.3.190.0090.00616.43
7.3.180.0100.01016.36
7.3.170.0080.00816.62
7.3.160.0030.01316.59
7.2.330.0140.00316.54
7.2.320.0120.00916.52
7.2.310.0070.01116.75
7.2.300.0110.01116.66
7.2.290.0060.01116.73
7.2.60.0100.00716.99
7.2.00.0000.01219.10
7.1.200.0080.00415.79
7.1.100.0000.01418.14
7.1.70.0030.00917.22
7.1.60.0180.00634.93
7.1.50.0240.00034.80
7.1.40.0180.01234.25
7.1.30.0090.01634.41
7.1.20.0140.01034.65
7.1.10.0040.00816.73
7.1.00.0040.00816.70
7.0.200.0030.00916.75
7.0.190.0000.01116.67
7.0.180.0060.00616.14
7.0.170.0000.01416.12
7.0.160.0030.01016.22
7.0.150.0070.00415.99
7.0.140.0060.00616.16
7.0.130.0040.00816.36
7.0.120.0000.01116.62
7.0.110.0030.00916.04
7.0.100.0060.00616.20
7.0.90.0100.00316.16
7.0.80.0040.00816.25
7.0.70.0000.01116.34
7.0.60.0090.00315.92
7.0.50.0040.00716.56
7.0.40.0030.00916.45
7.0.30.0070.00616.59
7.0.20.0080.00816.46
7.0.10.0000.01816.28
7.0.00.0060.00616.46

preferences:
59.41 ms | 401 KiB | 5 Q