3v4l.org

run code in 300+ PHP versions simultaneously
<?php $some_string = "Ку ку"; $arra_c = array("ASCII//IGNORE", "Windows-1252//IGNORE", "ISO-8859-15//IGNORE", "ISO-8859-1//IGNORE", "ISO-8859-6//IGNORE", "CP1256//IGNORE"); //foreach($arra_c as $k => $v){ var_dump(iconv("UTF-8", "Windows-1252//IGNORE", $some_string)); //} var_dump(mb_detect_encoding($some_string)); var_dump(strlen(json_encode(array('message' => $some_string))));

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)
8.3.40.0150.00618.83
8.3.30.0100.00320.23
8.3.20.0070.00720.12
8.3.10.0070.01121.80
8.3.00.0090.00022.44
8.2.170.0070.00722.96
8.2.160.0060.00820.35
8.2.150.0030.00524.18
8.2.140.0050.00324.66
8.2.130.0050.00326.16
8.2.120.0110.00419.54
8.2.110.0060.00320.54
8.2.100.0030.00917.77
8.2.90.0050.00319.24
8.2.80.0050.00319.28
8.2.70.0040.00417.63
8.2.60.0000.00817.93
8.2.50.0040.00418.07
8.2.40.0020.00518.22
8.2.30.0040.00418.15
8.2.20.0040.00417.66
8.2.10.0040.00417.58
8.2.00.0000.00817.60
8.1.270.0080.00024.66
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0000.01023.79
8.1.230.0090.00323.85
8.1.220.0060.00317.74
8.1.210.0060.00318.77
8.1.200.0050.00517.35
8.1.190.0050.00317.43
8.1.180.0040.00420.20
8.1.170.0040.00418.63
8.1.160.0070.00022.01
8.1.150.0000.00718.54
8.1.140.0070.00017.49
8.1.130.0020.00517.81
8.1.120.0030.00617.47
8.1.110.0000.00817.34
8.1.100.0000.00717.41
8.1.90.0050.00217.38
8.1.80.0000.00817.46
8.1.70.0040.00417.42
8.1.60.0000.00817.49
8.1.50.0000.00717.41
8.1.40.0000.00817.46
8.1.30.0040.00417.52
8.1.20.0040.00417.65
8.1.10.0000.00717.55
8.1.00.0020.00517.58
8.0.300.0040.00418.77
8.0.290.0000.00717.15
8.0.280.0050.00218.36
8.0.270.0030.00317.18
8.0.260.0030.00316.86
8.0.250.0000.00717.04
8.0.240.0030.00517.05
8.0.230.0000.00717.05
8.0.220.0070.00016.82
8.0.210.0030.00316.81
8.0.200.0000.00816.91
8.0.190.0030.00516.96
8.0.180.0070.00016.87
8.0.170.0040.00416.86
8.0.160.0040.00416.89
8.0.150.0000.00716.89
8.0.140.0040.00416.86
8.0.130.0050.00013.31
8.0.120.0000.00917.01
8.0.110.0060.00316.92
8.0.100.0030.00617.11
8.0.90.0030.00616.95
8.0.80.0130.00316.96
8.0.70.0090.00016.92
8.0.60.0040.00416.84
8.0.50.0060.00316.87
8.0.30.0080.01517.09
8.0.20.0120.00917.40
8.0.10.0030.00616.89
8.0.00.0070.01416.95
7.4.330.0020.00215.00
7.4.320.0040.00416.61
7.4.300.0000.00716.62
7.4.290.0000.00716.55
7.4.280.0000.00716.59
7.4.270.0020.00516.52
7.4.260.0040.00416.61
7.4.250.0040.00416.53
7.4.240.0010.00716.79
7.4.230.0040.00416.66
7.4.220.0130.00716.68
7.4.210.0070.00916.61
7.4.200.0050.00316.70
7.4.190.0040.00416.55
7.4.160.0030.01416.68
7.4.150.0030.01617.40
7.4.140.0150.00717.86
7.4.130.0060.01416.61
7.4.120.0090.00916.71
7.4.110.0030.01516.79
7.4.100.0100.01416.56
7.4.90.0100.01016.64
7.4.80.0070.01719.39
7.4.70.0130.00616.59
7.4.60.0090.01016.40
7.4.50.0060.00716.47
7.4.40.0100.00819.44
7.4.30.0080.01216.32
7.4.20.0160.00816.40
7.4.10.0140.00716.33
7.4.00.0050.01415.58
7.3.330.0030.00313.16
7.3.320.0060.00013.18
7.3.310.0060.00316.48
7.3.300.0040.00416.50
7.3.290.0030.01316.47
7.3.280.0070.01116.45
7.3.270.0030.01717.40
7.3.260.0070.01416.75
7.3.250.0200.00616.56
7.3.240.0090.00916.69
7.3.230.0120.00616.47
7.3.210.0030.01516.40
7.3.200.0110.01416.48
7.3.190.0050.01316.54
7.3.180.0090.00816.38
7.3.170.0050.01216.52
7.3.160.0080.01016.38
7.3.150.0110.00716.34
7.3.140.0100.00816.35
7.3.130.0050.01416.37
7.3.120.0050.01215.56
7.3.110.0070.01515.68
7.3.100.0080.01015.74
7.3.90.0050.01415.54
7.3.80.0060.00915.72
7.3.70.0070.01015.70
7.3.60.0070.00715.77
7.3.50.0090.00615.69
7.3.40.0130.00415.61
7.3.30.0060.01115.63
7.3.20.0050.01116.55
7.3.10.0120.00716.58
7.3.00.0070.00716.67
7.2.330.0150.00916.52
7.2.320.0180.00316.36
7.2.310.0090.01016.59
7.2.300.0100.00716.67
7.2.290.0090.01016.77
7.2.280.0130.00716.30
7.2.270.0080.01116.71
7.2.260.0060.01516.62
7.2.250.0090.01215.89
7.2.240.0110.01315.75
7.2.230.0100.00915.86
7.2.220.0080.00915.77
7.2.210.0140.00515.88
7.2.200.0060.01315.73
7.2.190.0090.00915.78
7.2.180.0080.01015.64
7.2.170.0090.00815.49
7.2.160.0120.00616.41
7.2.150.0160.03716.57
7.2.140.0040.01316.64
7.2.130.0060.01516.49
7.2.120.0070.01116.66
7.2.110.0130.01216.51
7.2.100.0100.01016.61
7.2.90.0060.01416.32
7.2.80.0140.00616.55
7.2.70.0080.01516.34
7.2.60.0080.01216.59
7.2.50.0150.01216.74
7.2.40.0070.01116.65
7.2.30.0060.01618.40
7.2.20.0040.01618.24
7.2.10.0060.01318.39
7.2.00.0240.01118.29
7.1.330.0400.01515.89
7.1.320.0070.01515.73
7.1.310.0160.00915.87
7.1.300.0130.01115.83
7.1.290.0550.00815.93
7.1.280.0160.00415.80
7.1.270.0130.00815.64
7.1.260.0150.00715.83
7.1.250.0160.01915.71
7.1.240.0360.01215.87
7.1.230.0330.00015.69
7.1.220.0230.01115.88
7.1.210.0220.00615.73
7.1.200.0160.00715.83
7.1.190.0260.00915.66
7.1.180.0190.01515.70
7.1.170.0280.00815.57
7.1.160.0340.01317.62
7.1.150.0230.00917.47
7.1.140.0220.01017.51
7.1.130.0280.01417.53
7.1.120.0170.01417.60
7.1.110.0540.00315.73
7.1.100.0280.00615.73
7.1.90.0240.00815.91
7.1.80.0270.00317.44
7.1.70.0140.00817.41
7.1.60.0150.01518.39
7.1.50.0140.01417.36
7.1.40.0200.01017.41
7.1.30.0240.00817.57
7.1.20.0210.01017.64
7.1.10.0270.00317.65
7.1.00.0130.04419.99
7.0.330.0190.01915.41
7.0.320.0180.01115.40
7.0.310.0190.01515.42
7.0.300.0170.01315.29
7.0.290.0250.00817.32
7.0.280.0290.00817.26
7.0.270.0200.01917.17
7.0.260.0250.00317.09
7.0.250.0300.00315.47
7.0.240.0140.01715.53
7.0.230.0230.00515.41
7.0.220.0210.01115.24
7.0.210.0170.01417.25
7.0.200.0140.01315.98
7.0.190.0170.01217.21
7.0.180.0270.00317.11
7.0.170.0150.01617.09
7.0.160.0280.00617.36
7.0.150.0240.00817.20
7.0.140.0140.04119.65
7.0.130.0180.01217.37
7.0.120.0190.01117.04
7.0.110.0280.00317.27
7.0.100.0220.01117.19
7.0.90.0210.04318.59
7.0.80.0180.04418.64
7.0.70.0390.02818.55
7.0.60.0430.03717.62
7.0.50.0360.04418.83
7.0.40.0100.04218.67
7.0.30.0140.04718.59
7.0.20.0230.04318.73
7.0.10.0170.04218.77
7.0.00.0170.05718.78
5.6.400.0200.01215.88
5.6.390.0180.01515.89
5.6.380.0160.01315.91
5.6.370.0250.01315.98
5.6.360.0140.01515.88
5.6.350.0270.01115.99
5.6.340.0240.00715.89
5.6.330.0150.02215.86
5.6.320.0240.00816.10
5.6.310.0210.01015.86
5.6.300.0170.01516.11
5.6.290.0220.01116.11
5.6.280.0170.04018.75
5.6.270.0320.00616.16
5.6.260.0160.01915.89
5.6.250.0170.01416.01
5.6.240.0160.04118.27
5.6.230.0100.05018.43
5.6.220.0140.03018.28
5.6.210.0120.04918.25
5.6.200.0190.03018.56
5.6.190.0120.03018.59
5.6.180.0130.03118.60
5.6.170.0130.04818.50
5.6.160.0170.04218.59
5.6.150.0140.04918.63
5.6.140.0160.04518.73
5.6.130.0150.02918.67
5.6.120.0090.03018.58
5.6.110.0170.04018.60
5.6.100.0170.04018.63
5.6.90.0150.03118.53
5.6.80.0080.04018.12
5.6.70.0200.03018.18
5.6.60.0180.04018.30
5.6.50.0190.04718.19
5.6.40.0240.02618.22
5.6.30.0170.02918.24
5.6.20.0130.04218.21
5.6.10.0200.04018.27
5.6.00.0160.02718.18
5.5.380.0110.03318.11
5.5.370.0150.02818.11
5.5.360.0160.04618.14
5.5.350.0200.03818.11
5.5.340.0120.04618.47
5.5.330.0150.04818.46
5.5.320.0060.05318.48
5.5.310.0160.04118.51
5.5.300.0090.05118.49
5.5.290.0140.04018.50
5.5.280.0130.02518.49
5.5.270.0110.05118.49
5.5.260.0180.04418.43
5.5.250.0170.03918.37
5.5.240.0190.04118.19
5.5.230.0260.01918.20
5.5.220.0130.03518.01
5.5.210.0180.04618.18
5.5.200.0140.04218.08
5.5.190.0130.02718.08
5.5.180.0140.05017.93
5.5.170.0230.00815.78
5.5.160.0140.04418.20
5.5.150.0180.04018.05
5.5.140.0100.03318.02
5.5.130.0170.04018.13
5.5.120.0130.04317.95
5.5.110.0130.02818.02
5.5.100.0130.04817.93
5.5.90.0190.03717.97
5.5.80.0160.03918.04
5.5.70.0160.04017.90
5.5.60.0170.04117.95
5.5.50.0120.04818.07
5.5.40.0100.04217.88
5.5.30.0140.04518.00
5.5.20.0180.04318.10
5.5.10.0170.03817.97
5.5.00.0160.04517.97
5.4.450.0150.04316.01
5.4.440.0110.02215.88
5.4.430.0100.02916.04
5.4.420.0130.03816.04
5.4.410.0120.04316.13
5.4.400.0090.04815.72
5.4.390.0100.04515.72
5.4.380.0080.04815.89
5.4.370.0170.03615.82
5.4.360.0120.03015.71
5.4.350.0170.04115.85
5.4.340.0100.03715.81
5.4.330.0230.00312.50
5.4.320.0100.04215.74
5.4.310.0120.04415.79
5.4.300.0130.04215.91
5.4.290.0120.02515.87
5.4.280.0090.03015.76
5.4.270.0120.03815.84
5.4.260.0150.03715.67
5.4.250.0100.04215.61
5.4.240.0140.04015.72
5.4.230.0110.04015.83
5.4.220.0140.03715.80
5.4.210.0130.04215.81
5.4.200.0140.04215.76
5.4.190.0070.04715.88
5.4.180.0110.04115.91
5.4.170.0120.04215.76
5.4.160.0120.03915.73
5.4.150.0120.03215.73
5.4.140.0130.04014.47
5.4.130.0150.03414.49
5.4.120.0090.03014.52
5.4.110.0130.03714.58
5.4.100.0160.03814.50
5.4.90.0120.04014.52
5.4.80.0110.03814.59
5.4.70.0070.04314.50
5.4.60.0110.02914.51
5.4.50.0100.03014.54
5.4.40.0090.03914.35
5.4.30.0110.03614.44
5.4.20.0110.04014.43
5.4.10.0100.04214.52
5.4.00.0120.02314.06
5.3.290.0080.03213.98
5.3.280.0070.03213.87
5.3.270.0070.04913.97
5.3.260.0120.03713.98
5.3.250.0120.04014.00
5.3.240.0140.04213.96
5.3.230.0120.04514.00
5.3.220.0040.04813.93
5.3.210.0140.04513.97
5.3.200.0100.04113.91
5.3.190.0090.04413.87
5.3.180.0080.04814.00
5.3.170.0080.04514.00
5.3.160.0140.03713.92
5.3.150.0100.03013.86
5.3.140.0060.04814.03
5.3.130.0110.04313.85
5.3.120.0120.02813.92
5.3.110.0130.04313.97
5.3.100.0090.04513.69
5.3.90.0160.03513.69
5.3.80.0090.02713.72
5.3.70.0070.04713.64
5.3.60.0150.03713.62
5.3.50.0090.03913.59
5.3.40.0120.03913.46
5.3.30.0100.04313.53
5.3.20.0100.04013.50
5.3.10.0130.03913.37
5.3.00.0060.03113.35
5.2.170.0070.03911.63
5.2.160.0130.02511.61
5.2.150.0090.03111.70
5.2.140.0060.02411.68
5.2.130.0080.02211.71
5.2.120.0080.03111.76
5.2.110.0110.03311.72
5.2.100.0110.03411.71
5.2.90.0040.04211.81
5.2.80.0080.02711.69
5.2.70.0090.03411.63
5.2.60.0090.03711.61
5.2.50.0070.03111.66
5.2.40.0060.02411.69
5.2.30.0130.03211.65
5.2.20.0080.02711.54
5.2.10.0050.02911.51
5.2.00.0110.03011.41
5.1.60.0100.03011.02
5.1.50.0020.03411.05
5.1.40.0070.03311.04
5.1.30.0110.03111.13
5.1.20.0090.03111.21
5.1.10.0090.02011.10
5.1.00.0100.02011.07
5.0.50.0050.02010.31
5.0.40.0090.01010.25
5.0.30.0060.02210.14
5.0.20.0040.01410.18
5.0.10.0040.01710.14
5.0.00.0060.02110.11
4.4.90.0040.0219.73
4.4.80.0030.0179.73
4.4.70.0060.0159.73
4.4.60.0060.0179.73
4.4.50.0050.0219.73
4.4.40.0040.0299.73
4.4.30.0020.0209.73
4.4.20.0060.0169.73
4.4.10.0060.0159.73
4.4.00.0050.0209.73
4.3.110.0070.0179.73
4.3.100.0040.0079.73
4.3.90.0060.0109.73
4.3.80.0070.0159.73
4.3.70.0030.0109.73
4.3.60.0040.0089.73
4.3.50.0040.0109.73
4.3.40.0030.0139.73
4.3.30.0020.0109.73
4.3.20.0070.0079.73
4.3.10.0020.0099.73
4.3.00.0030.0189.73

preferences:
35.87 ms | 400 KiB | 5 Q