3v4l.org

run code in 300+ PHP versions simultaneously
<?php function createStringFromMap($map) { $chars = array('C*'); end($map); $last = key($map); for ($i = $j = $char = 0; $i <= $last; $i++) { $bit = isset($map[$i]) ? $map[$i] : 0; $char |= ($bit << (7 - $j)); if (++$j === 8) { $chars[] = $char; $j = $char = 0; } } return call_user_func_array('pack', $chars); } $map = array(); $map[1] = 1; $map[9] = 1; $map[17] = 1; echo createStringFromMap($map);

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)
8.3.60.0120.00318.55
8.3.50.0130.00722.11
8.3.40.0030.01718.80
8.3.30.0070.00719.00
8.3.20.0080.00018.76
8.3.10.0090.00020.70
8.3.00.0040.00423.67
8.2.180.0040.01116.50
8.2.170.0030.01222.96
8.2.160.0150.00620.43
8.2.150.0030.00624.18
8.2.140.0090.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00419.45
8.2.110.0000.00922.19
8.2.100.0000.01117.91
8.2.90.0000.00919.34
8.2.80.0060.00317.97
8.2.70.0070.00417.48
8.2.60.0000.01117.93
8.2.50.0040.00418.07
8.2.40.0080.00018.22
8.2.30.0070.00019.82
8.2.20.0040.00417.72
8.2.10.0030.00617.67
8.2.00.0040.00417.69
8.1.280.0110.00725.92
8.1.270.0040.00423.99
8.1.260.0080.00026.35
8.1.250.0060.00328.09
8.1.240.0080.00417.36
8.1.230.0100.00317.48
8.1.220.0080.00018.77
8.1.210.0000.00818.85
8.1.200.0060.00317.25
8.1.190.0070.00017.53
8.1.180.0040.00418.10
8.1.170.0060.00318.75
8.1.160.0000.00718.74
8.1.150.0080.00018.68
8.1.140.0000.00817.45
8.1.130.0030.00317.83
8.1.120.0000.00717.46
8.1.110.0040.00417.29
8.1.100.0070.00017.45
8.1.90.0000.00717.38
8.1.80.0000.00717.45
8.1.70.0070.00017.38
8.1.60.0000.00917.59
8.1.50.0040.00417.35
8.1.40.0040.00417.40
8.1.30.0040.00417.66
8.1.20.0050.00517.58
8.1.10.0000.00717.64
8.1.00.0050.00217.52
8.0.300.0030.00620.02
8.0.290.0000.00817.16
8.0.280.0000.00718.32
8.0.270.0040.00417.39
8.0.260.0040.00416.88
8.0.250.0070.00016.98
8.0.240.0080.00316.88
8.0.230.0030.00316.88
8.0.220.0060.00016.84
8.0.210.0070.00016.87
8.0.200.0080.00016.90
8.0.190.0000.00716.79
8.0.180.0030.00516.85
8.0.170.0040.00416.80
8.0.160.0070.00316.78
8.0.150.0030.00616.76
8.0.140.0070.00516.75
8.0.130.0030.00313.19
8.0.120.0040.00416.75
8.0.110.0040.00416.70
8.0.100.0070.00016.89
8.0.90.0020.00516.66
8.0.80.0120.00316.78
8.0.70.0000.00716.79
8.0.60.0040.00416.82
8.0.50.0040.00416.71
8.0.30.0100.01117.15
8.0.20.0100.00817.40
8.0.10.0040.00416.93
8.0.00.0060.01316.90
7.4.330.0020.00213.43
7.4.320.0000.00616.63
7.4.300.0000.00616.55
7.4.290.0040.00416.61
7.4.280.0050.00516.57
7.4.270.0030.00316.44
7.4.260.0030.00313.17
7.4.250.0030.00616.60
7.4.240.0030.00316.47
7.4.230.0000.00716.57
7.4.220.0040.01416.56
7.4.210.0070.00916.47
7.4.200.0070.00016.48
7.4.190.0030.00316.57
7.4.160.0120.00516.46
7.4.150.0060.01017.40
7.4.140.0150.00317.86
7.4.130.0090.00916.48
7.4.120.0100.00616.42
7.4.110.0060.01016.71
7.4.100.0120.00616.34
7.4.90.0130.01016.63
7.4.80.0060.01319.04
7.4.70.0100.00816.38
7.4.60.0100.00716.38
7.4.50.0040.00016.45
7.4.40.0100.00722.27
7.4.30.0130.00316.70
7.4.00.0040.00814.91
7.3.330.0000.00513.15
7.3.320.0050.00013.29
7.3.310.0070.00016.27
7.3.300.0000.00816.39
7.3.290.0100.00316.38
7.3.280.0060.01016.33
7.3.270.0100.01017.40
7.3.260.0130.00918.24
7.3.250.0080.01016.45
7.3.240.0030.01416.52
7.3.230.0070.01116.53
7.3.210.0100.00616.41
7.3.200.0060.01519.39
7.3.190.0120.00616.37
7.3.180.0040.01116.67
7.3.170.0060.00916.36
7.3.160.0070.01016.39
7.3.120.0120.00314.84
7.2.330.0140.00416.67
7.2.320.0040.01316.63
7.2.310.0120.00816.71
7.2.300.0070.01016.75
7.2.290.0140.00316.86
7.2.00.0030.00919.38
7.1.100.0060.00618.04
7.1.70.0000.01016.91
7.1.60.0140.00319.40
7.1.50.0150.00917.02
7.1.00.0000.07322.41
7.0.200.0030.00516.88
7.0.140.0000.07721.97
7.0.60.0100.05719.84
7.0.50.0030.04017.86
7.0.40.0030.04017.75
7.0.30.0070.03717.72
7.0.20.0100.04317.73
7.0.10.0000.04317.75
7.0.00.0000.04317.70
5.6.280.0000.07720.80
5.6.210.0130.07020.67
5.6.200.0000.04718.23
5.6.190.0030.04718.16
5.6.180.0030.04018.25
5.6.170.0030.04018.27
5.6.160.0030.04018.19
5.6.150.0000.04318.30
5.6.140.0070.03718.18
5.6.130.0070.03718.18
5.6.120.0000.04318.18
5.6.110.0000.08718.28
5.6.100.0070.05018.17
5.6.90.0070.08018.26
5.6.80.0170.03717.73
5.6.70.0000.08717.54
5.6.60.0030.07317.54
5.6.50.0100.06017.54
5.6.40.0000.08717.50
5.6.30.0000.04717.52
5.6.20.0000.08317.63
5.6.10.0130.07317.53
5.6.00.0170.07017.58
5.5.350.4170.04720.50
5.5.340.0100.03018.09
5.5.330.0000.04018.07
5.5.320.0000.04318.03
5.5.310.0000.04318.02
5.5.300.0130.03317.99
5.5.290.0070.03717.97
5.5.280.0030.05318.05
5.5.270.0030.08317.95
5.5.260.0130.07717.97
5.5.250.0070.05317.77
5.5.240.0000.08317.47
5.5.230.0130.07717.37
5.5.220.0070.04717.37
5.5.210.0130.07017.43
5.5.200.0030.08317.34
5.5.190.0070.07717.30
5.5.180.0100.07717.34
5.5.160.0100.07317.27
5.5.150.0030.05317.32
5.5.140.0100.03717.42
5.5.130.0070.07717.34
5.5.120.0070.07017.34
5.5.110.0070.07317.38
5.5.100.0070.07317.21
5.5.90.0000.08017.33
5.5.80.0170.07017.23
5.5.70.0100.07717.18
5.5.60.0030.04017.16
5.5.50.0070.07317.26
5.5.40.0070.07717.34
5.5.30.0000.08717.16
5.5.20.0070.07717.27
5.5.10.0130.03017.19
5.5.00.0130.06317.21
5.4.450.0000.05719.29
5.4.440.0030.06019.46
5.4.430.0070.08019.36
5.4.420.0100.06019.41
5.4.410.0030.07319.22
5.4.400.0030.07319.10
5.4.390.0130.05019.04
5.4.380.0130.07018.89
5.4.370.0000.05019.05
5.4.360.0100.07019.02
5.4.350.0070.07319.13
5.4.340.0030.05019.06
5.4.320.0100.07319.07
5.4.310.0100.07318.98
5.4.300.0000.04718.95
5.4.290.0130.07319.27
5.4.280.0070.08019.27
5.4.270.0030.08018.89
5.4.260.0000.08319.02
5.4.250.0030.07319.05
5.4.240.0100.04018.88
5.4.230.0030.04318.98
5.4.220.0030.08019.09
5.4.210.0170.07018.88
5.4.200.0030.08018.97
5.4.190.0130.07019.04
5.4.180.0030.05719.02
5.4.170.0070.03719.10
5.4.160.0070.06718.99
5.4.150.0030.06018.87
5.4.140.0000.05316.43
5.4.130.0100.03316.38
5.4.120.0030.04016.39
5.4.110.0070.07016.58
5.4.100.0070.07316.43
5.4.90.0070.08016.47
5.4.80.0130.06316.23
5.4.70.0100.04316.33
5.4.60.0100.07016.43
5.4.50.0070.07316.18
5.4.40.0100.05316.38
5.4.30.0100.07316.39
5.4.20.0070.06716.32
5.4.10.0000.07016.32
5.4.00.0130.06715.90
5.3.290.0070.08014.71
5.3.280.0070.06714.55
5.3.270.0000.04314.66
5.3.260.0030.05714.66
5.3.250.0100.07314.65
5.3.240.0070.07714.63
5.3.230.0070.03714.66
5.3.220.0130.06714.58
5.3.210.0070.08314.59
5.3.200.0030.07314.63
5.3.190.0070.07714.58
5.3.180.0100.07014.42
5.3.170.0070.08014.61
5.3.160.0070.07714.60
5.3.150.0130.06714.61
5.3.140.0100.05314.79
5.3.130.0130.03714.60
5.3.120.0070.08014.57
5.3.110.0070.04314.65
5.3.100.0070.04314.02
5.3.90.0130.06713.97
5.3.80.0100.07014.04
5.3.70.0070.07313.86
5.3.60.0070.07014.20
5.3.50.0030.08013.84
5.3.40.0000.08013.84
5.3.30.0100.06313.81
5.3.20.0070.07013.68
5.3.10.0070.03713.69
5.3.00.0070.06013.64
5.2.170.0000.04711.14
5.2.160.0130.05011.11
5.2.150.0100.03311.21
5.2.140.0030.05711.18
5.2.130.0070.06011.00
5.2.120.0000.03311.15
5.2.110.0000.06711.15
5.2.100.0070.06011.20
5.2.90.0030.04310.95
5.2.80.0030.05010.98
5.2.70.0070.03011.05
5.2.60.0170.05311.10
5.2.50.0070.06310.87
5.2.40.0070.04711.04
5.2.30.0130.05011.18
5.2.20.0000.05710.93
5.2.10.0030.03310.81
5.2.00.0000.04710.70
5.1.60.0000.0339.96
5.1.50.0000.02710.03
5.1.40.0030.0509.81
5.1.30.0030.03310.54
5.1.20.0030.04310.40
5.1.10.0030.05010.10
5.1.00.0070.05310.06
5.0.50.0000.0338.87
5.0.40.0030.0408.87
5.0.30.0070.0378.87
5.0.20.0030.0438.87
5.0.10.0030.0438.87
5.0.00.0070.0408.87
4.4.90.0000.0278.87
4.4.80.0000.0278.87
4.4.70.0030.0178.87
4.4.60.0070.0308.87
4.4.50.0070.0178.87
4.4.40.0000.0278.87
4.4.30.0000.0178.87
4.4.20.0070.0178.87
4.4.10.0000.0278.87
4.4.00.0000.0608.87
4.3.110.0030.0238.87
4.3.100.0000.0338.87
4.3.90.0070.0338.87
4.3.80.0030.0578.87
4.3.70.0000.0308.87
4.3.60.0030.0338.87
4.3.50.0000.0378.87
4.3.40.0000.0308.87
4.3.30.0000.0408.87
4.3.20.0000.0378.87
4.3.10.0000.0278.87
4.3.00.0030.0208.87

preferences:
40.8 ms | 401 KiB | 5 Q