3v4l.org

run code in 300+ PHP versions simultaneously
<?php function gray_encode() { for($j=1; $j<32; $j++) { echo '<h1>' .$j , "</h1><br/>"; $powered = number_format( pow(2, $j) -1 , 0, '.', ''); $lineNumber = 1; for ($i = number_format( ( $powered - $j)+1, 0, '.', ''); $i < number_format( ($powered+1), 0, '.', ''); $i++) { echo '<strong>' .$lineNumber . '</strong>. '; $decbin = decbin($i ^ ($i >> 1)); echo '-----'.bindec($decbin) . '----- '; echo $decbin ."<br/>"; $lineNumber++; } echo '<hr>'; } } //fscanf(STDIN, "%d\n", $number); gray_encode();

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)
8.3.60.0180.00416.63
8.3.50.0160.00822.11
8.3.40.0070.01118.55
8.3.30.0160.00619.09
8.3.20.0070.00320.20
8.3.10.0090.00023.59
8.3.00.0030.01017.50
8.2.180.0100.01418.42
8.2.170.0080.01222.96
8.2.160.0140.00420.47
8.2.150.0070.00324.18
8.2.140.0000.01124.66
8.2.130.0070.00326.16
8.2.120.0100.00022.20
8.2.110.0040.00722.02
8.2.100.0140.00017.84
8.2.90.0030.00619.40
8.2.80.0030.00618.16
8.2.70.0030.00717.75
8.2.60.0000.00917.93
8.2.50.0060.00318.07
8.2.40.0030.01018.34
8.2.30.0060.00318.29
8.2.20.0080.00017.75
8.2.10.0060.00318.29
8.2.00.0030.00617.79
8.1.280.0070.01025.92
8.1.270.0040.01523.91
8.1.260.0030.00626.35
8.1.250.0090.00028.09
8.1.240.0040.00723.93
8.1.230.0100.00319.17
8.1.220.0050.00517.74
8.1.210.0100.00018.77
8.1.200.0080.00417.25
8.1.190.0050.00517.23
8.1.180.0000.00918.10
8.1.170.0050.00518.55
8.1.160.0060.00322.11
8.1.150.0060.00318.70
8.1.140.0080.00017.46
8.1.130.0000.00817.80
8.1.120.0060.00317.46
8.1.110.0090.00017.42
8.1.100.0000.00917.50
8.1.90.0000.00817.43
8.1.80.0030.00717.37
8.1.70.0070.00317.40
8.1.60.0030.00617.68
8.1.50.0030.00617.61
8.1.40.0000.00917.50
8.1.30.0060.00317.52
8.1.20.0030.00617.55
8.1.10.0000.00917.57
8.1.00.0000.01017.52
8.0.300.0030.00620.70
8.0.290.0040.00417.16
8.0.280.0000.00818.38
8.0.270.0040.00417.32
8.0.260.0000.00917.32
8.0.250.0000.00817.05
8.0.240.0040.00716.97
8.0.230.0000.00817.04
8.0.220.0000.00817.08
8.0.210.0030.00517.03
8.0.200.0040.00417.05
8.0.190.0030.00617.07
8.0.180.0000.00816.99
8.0.170.0060.00316.94
8.0.160.0030.00616.91
8.0.150.0060.00317.02
8.0.140.0000.00916.88
8.0.130.0000.00713.41
8.0.120.0060.00317.00
8.0.110.0030.00516.86
8.0.100.0080.00017.08
8.0.90.0030.00616.89
8.0.80.0110.01117.06
8.0.70.0000.00916.99
8.0.60.0060.00316.85
8.0.50.0040.00416.91
8.0.30.0100.01617.37
8.0.20.0140.01117.46
8.0.10.0060.00317.15
8.0.00.0100.01917.01
7.4.330.0060.00315.00
7.4.320.0070.00316.57
7.4.300.0000.00916.55
7.4.290.0090.00016.54
7.4.280.0000.00916.64
7.4.270.0000.00916.67
7.4.260.0060.00316.64
7.4.250.0100.00016.55
7.4.240.0030.00516.58
7.4.230.0000.00816.67
7.4.220.0090.01516.46
7.4.210.0110.01116.57
7.4.200.0080.00016.57
7.4.190.0030.00516.43
7.4.160.0200.00316.45
7.4.150.0220.00417.40
7.4.140.0220.00317.86
7.4.130.0120.01716.68
7.4.120.0180.01816.54
7.4.110.0090.01616.45
7.4.100.0190.00916.66
7.4.90.0120.01216.66
7.4.80.0090.01619.39
7.4.70.0200.01016.41
7.4.60.0100.01516.57
7.4.50.0030.00616.61
7.4.40.0170.01216.63
7.4.30.0030.01816.41
7.3.330.0040.00713.18
7.3.320.0040.00413.34
7.3.310.0030.00616.35
7.3.300.0000.00816.32
7.3.290.0000.02416.39
7.3.280.0130.01116.38
7.3.270.0120.01917.40
7.3.260.0170.01716.43
7.3.250.0210.00516.55
7.3.240.0130.01016.68
7.3.230.0090.01616.39
7.3.210.0160.01316.40
7.3.200.0130.01919.39
7.3.190.0150.01016.50
7.3.180.0160.00616.64
7.3.170.0060.01616.61
7.3.160.0120.01216.54
7.2.330.0150.01116.77
7.2.320.0060.01616.52
7.2.310.0130.01016.87
7.2.300.0180.00916.76
7.2.290.0170.00816.67
7.2.100.0170.00314.70
7.2.90.0370.00514.77
7.2.80.1200.01114.71
7.2.70.0160.00815.04
7.2.60.0150.01014.91
7.2.50.1110.00714.92
7.2.40.0910.00915.03
7.2.30.1020.01714.88
7.2.20.1090.01614.72
7.2.10.1500.01014.96
7.2.00.1400.00015.05
7.1.220.1000.00613.83
7.1.210.0760.01113.85
7.1.200.0390.01314.14
7.1.190.0150.00513.95
7.1.180.0770.00913.84
7.1.170.0450.01313.88
7.1.160.0510.00313.63
7.1.150.1020.00613.86
7.1.140.1250.00613.61
7.1.130.0930.00913.97
7.1.120.0990.00713.77
7.1.110.0830.01313.89
7.1.100.1070.01313.61
7.1.90.1330.01213.70
7.1.80.1440.00314.00
7.1.70.1850.00314.08
7.1.60.1630.01231.80
7.1.50.1910.00332.13
7.1.40.0360.00331.91
7.1.30.0320.00631.60
7.1.20.1730.00931.51
7.1.10.1710.01013.99
7.1.00.1510.01013.98
7.0.310.1430.00713.61
7.0.300.0930.01013.61
7.0.290.0120.01213.61
7.0.280.0490.00613.61
7.0.270.0930.00713.61
7.0.260.0160.00413.61
7.0.250.0140.00713.61
7.0.240.1390.01613.61
7.0.230.1430.01013.61
7.0.220.1420.00913.61
7.0.210.1370.00913.61
7.0.200.1900.01213.61
7.0.190.0680.00613.61
7.0.180.1440.00013.61
7.0.170.1360.00913.61
7.0.160.1560.00413.61
7.0.150.1400.00013.62
7.0.140.0190.01613.61
7.0.130.2360.01313.61
7.0.120.1910.01313.61
7.0.110.0270.00813.61
7.0.100.0560.00313.61
7.0.90.0190.00813.61
7.0.80.1390.00313.61
7.0.70.1530.01013.61
7.0.60.0050.01813.61
7.0.50.0560.00913.61
7.0.40.0780.00913.61
7.0.30.0180.00413.69
7.0.20.0580.01213.61
7.0.10.0400.01113.66
7.0.00.0130.00613.69
5.6.380.0070.01014.14
5.6.370.0090.00914.30
5.6.360.0080.01214.26
5.6.350.0120.01214.26
5.6.340.0060.01114.22
5.6.330.0120.00813.81
5.6.320.0150.00614.29
5.6.310.0120.00413.74
5.6.300.0030.01314.29
5.6.290.0120.00814.09
5.6.280.0120.01014.23
5.6.270.0070.02014.29
5.6.260.0070.01014.38
5.6.250.0030.01514.23
5.6.240.0090.01114.12
5.6.230.0190.00014.21
5.6.220.0150.00613.90
5.6.210.0070.01014.27
5.6.200.0090.00914.16
5.6.190.0000.01614.38
5.6.180.0070.01414.31
5.6.170.0090.01213.93
5.6.160.0090.00914.17
5.6.150.0070.01014.27
5.6.140.0170.00314.16
5.6.130.0090.01214.44
5.6.120.0070.01414.22
5.6.110.0130.00414.11
5.6.100.0090.00914.35
5.6.90.0000.01514.24
5.6.80.0160.00414.05
5.6.70.0170.00414.05
5.6.60.0110.00813.99
5.6.50.0040.01413.94
5.6.40.0090.00813.90
5.6.30.0060.01113.96
5.6.20.0150.00413.91
5.6.10.0220.00014.13
5.6.00.0180.00414.39
5.5.380.0030.01213.61
5.5.370.0020.01113.61
5.5.360.0060.01113.61
5.5.350.0080.01113.61
5.5.340.0050.01013.61
5.5.330.0110.00413.61
5.5.320.0110.00813.61
5.5.310.0070.01013.61
5.5.300.0050.00813.61
5.5.290.0040.01113.61
5.5.280.0100.00513.61
5.5.270.0090.00413.61
5.5.260.0110.00413.61
5.5.250.0060.00813.61
5.5.240.0060.01013.61
5.5.230.0060.00613.61
5.5.220.0100.00613.61
5.5.210.0060.00913.61
5.5.200.0090.00513.61
5.5.190.0110.00513.61
5.5.180.0030.01413.61
5.5.170.0120.00414.22
5.5.160.0110.00413.61
5.5.150.0130.00013.61
5.4.450.0150.00013.61
5.4.440.0100.00713.61
5.4.430.0080.00513.61
5.4.420.0000.01313.61
5.4.410.0080.00413.61
5.4.400.0060.00913.61
5.4.390.0040.00913.61
5.4.380.0070.00713.61
5.4.370.0030.01013.61
5.4.360.0100.00313.61
5.4.350.0140.00013.61
5.4.340.0150.00013.61
5.4.330.0000.01313.61
5.4.320.0030.01013.61
5.3.290.0100.00813.61

preferences:
61.91 ms | 401 KiB | 5 Q