3v4l.org

run code in 300+ PHP versions simultaneously
<?php function maxBit() { list($return, $number) = array(0, 0); // Start process while (true) { // Get number at x bits $numX = intval(bcsub(bcpow('2', "{$return}"), '1')); // Check number if ($numX != 0 && $number == $numX) { break; } // Update number $number = $numX; // Update return value $return++; } return $return; } echo maxBit();

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)
8.3.60.0110.00716.48
8.3.50.0120.00916.50
8.3.40.0110.00418.83
8.3.30.0120.00618.65
8.3.20.0070.00720.34
8.3.10.0040.00423.52
8.3.00.0040.00423.70
8.2.180.0070.00718.41
8.2.170.0150.00022.96
8.2.160.0160.00420.27
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0050.00319.77
8.2.120.0050.00326.35
8.2.110.0060.00320.87
8.2.100.0060.00618.05
8.2.90.0040.00419.38
8.2.80.0030.00618.05
8.2.70.0030.00617.63
8.2.60.0030.00618.16
8.2.50.0000.00818.07
8.2.40.0000.00922.31
8.2.30.0050.00219.35
8.2.20.0000.00717.80
8.2.10.0000.00718.07
8.2.00.0000.00718.09
8.1.280.0070.00725.92
8.1.270.0040.01423.96
8.1.260.0040.00428.09
8.1.250.0060.00328.09
8.1.240.0060.00322.45
8.1.230.0070.00319.10
8.1.220.0040.00417.77
8.1.210.0000.00818.77
8.1.200.0050.00517.35
8.1.190.0080.00017.25
8.1.180.0070.00018.10
8.1.170.0090.00018.53
8.1.160.0000.00720.72
8.1.150.0030.00518.93
8.1.140.0060.00319.42
8.1.130.0000.00817.68
8.1.120.0050.00217.32
8.1.110.0030.00517.48
8.1.100.0000.00717.44
8.1.90.0000.00717.38
8.1.80.0030.00417.36
8.1.70.0030.00317.50
8.1.60.0040.00417.49
8.1.50.0030.00617.41
8.1.40.0040.00417.40
8.1.30.0000.00817.50
8.1.20.0040.00417.59
8.1.10.0030.00617.48
8.1.00.0040.00417.49
8.0.300.0040.00418.77
8.0.290.0000.00816.75
8.0.280.0030.00518.45
8.0.270.0030.00317.17
8.0.260.0030.00317.24
8.0.250.0030.00317.00
8.0.240.0000.00817.09
8.0.230.0030.00316.92
8.0.220.0030.00516.86
8.0.210.0030.00516.81
8.0.200.0030.00616.91
8.0.190.0030.00516.95
8.0.180.0040.00417.01
8.0.170.0040.00416.95
8.0.160.0030.00516.95
8.0.150.0050.00316.92
8.0.140.0000.00816.76
8.0.130.0000.00613.31
8.0.120.0050.00316.93
8.0.110.0040.00416.90
8.0.100.0040.00416.85
8.0.90.0030.00617.01
8.0.80.0140.00716.91
8.0.70.0040.00416.74
8.0.60.0000.00716.95
8.0.50.0030.00516.84
8.0.30.0100.01017.12
8.0.20.0120.00717.40
8.0.10.0000.00717.07
8.0.00.0100.00716.81
7.4.330.0000.00516.67
7.4.320.0000.00616.50
7.4.300.0050.00316.63
7.4.290.0040.00416.51
7.4.280.0000.00916.63
7.4.270.0040.00416.48
7.4.260.0060.00316.58
7.4.250.0040.00416.57
7.4.240.0020.00516.48
7.4.230.0020.00516.52
7.4.220.0070.01416.54
7.4.210.0080.01216.56
7.4.200.0000.00816.43
7.4.160.0130.00316.38
7.4.150.0180.00017.40
7.4.140.0140.00517.86
7.4.130.0120.00616.39
7.4.120.0120.00916.46
7.4.110.0060.01116.58
7.4.100.0120.00616.61
7.4.90.0090.01316.49
7.4.80.0130.00619.39
7.4.70.0060.01116.63
7.4.60.0040.01116.46
7.4.50.0070.00716.46
7.4.40.0060.00916.58
7.4.30.0060.01216.48
7.4.00.0030.01014.96
7.3.330.0050.00013.37
7.3.320.0020.00213.34
7.3.310.0000.00716.42
7.3.300.0030.00316.46
7.3.290.0100.00616.42
7.3.280.0050.01216.45
7.3.270.0060.01617.40
7.3.260.0100.01316.36
7.3.250.0110.00816.52
7.3.240.0130.00616.46
7.3.230.0100.01016.39
7.3.210.0040.01516.42
7.3.200.0140.01019.39
7.3.190.0030.01916.41
7.3.180.0150.00016.29
7.3.170.0120.00616.50
7.3.160.0060.01016.44
7.3.10.0070.00716.60
7.3.00.0000.01016.75
7.2.330.0070.01016.47
7.2.320.0130.00916.46
7.2.310.0120.01516.66
7.2.300.0040.01516.69
7.2.290.0140.00716.63
7.2.130.0000.01416.95
7.2.120.0030.00917.03
7.2.110.0060.00916.91
7.2.100.0120.00316.95
7.2.90.0040.00716.95
7.2.80.0000.01416.75
7.2.70.0100.00316.79
7.2.60.0010.01116.85
7.2.50.0100.00616.73
7.2.40.0060.00917.02
7.2.30.0100.00716.93
7.2.20.0070.00716.96
7.2.10.0090.00617.07
7.2.00.0060.01018.03
7.1.250.0040.01115.65
7.1.200.0130.00015.98
7.1.100.0060.01018.07
7.1.70.0000.00917.20
7.1.60.0000.01519.30
7.1.50.0070.01316.87
7.1.00.0070.07322.48
7.0.200.0040.00716.94
7.0.60.0100.07021.73
7.0.50.0070.03717.72
7.0.40.0070.04720.05
7.0.30.0400.04320.08
7.0.20.0230.08320.16
7.0.10.0070.08320.10
7.0.00.0100.08020.12
5.6.280.0130.06321.10
5.6.210.0070.04020.73
5.6.200.0030.07718.29
5.6.190.0070.08020.55
5.6.180.0470.03720.55
5.6.170.0300.08320.40
5.6.160.0030.04320.55
5.6.150.0070.08018.23
5.6.140.0030.08318.19
5.6.130.0070.03718.24
5.6.120.0030.05021.00
5.6.110.0070.07721.14
5.6.100.0170.07021.02
5.6.90.0030.04021.03
5.6.80.0030.04320.50
5.5.350.0130.09020.53
5.5.340.0030.08318.04
5.5.330.0070.08020.42
5.5.320.0600.07020.36
5.5.310.0200.07320.27
5.5.300.0100.05717.95
5.5.290.0030.06318.08
5.5.280.0030.04320.80
5.5.270.0000.06320.77
5.5.260.0130.07320.89
5.5.250.0070.09320.62
5.5.240.0170.05720.04

preferences:
61.21 ms | 400 KiB | 5 Q