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 = $char = 0; } } if ($char) { $chars[] = $char; } return call_user_func_array('pack', $chars); } $map = array(); $map[1] = 1; $map[9] = 1; $map[17] = 1; $map[25] = 1; echo createStringFromMap($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)
8.3.60.0140.00318.55
8.3.50.0120.00417.32
8.3.40.0170.00018.90
8.3.30.0000.01418.79
8.3.20.0050.00318.71
8.3.10.0000.00818.60
8.3.00.0060.00319.50
8.2.180.0150.00016.63
8.2.170.0110.00322.96
8.2.160.0070.00718.96
8.2.150.0050.00324.18
8.2.140.0030.00524.66
8.2.130.0070.00726.16
8.2.120.0040.00420.68
8.2.110.0030.00720.52
8.2.100.0080.00317.84
8.2.90.0030.00617.75
8.2.80.0060.00318.92
8.2.70.0000.00917.50
8.2.60.0000.00818.05
8.2.50.0090.00018.07
8.2.40.0040.00420.07
8.2.30.0000.00817.74
8.2.20.0040.00717.59
8.2.10.0000.00817.64
8.2.00.0030.00717.60
8.1.280.0080.00625.92
8.1.270.0050.00323.99
8.1.260.0100.00726.35
8.1.250.0040.00428.09
8.1.240.0000.01023.79
8.1.230.0050.00520.90
8.1.220.0080.00017.74
8.1.210.0030.00518.77
8.1.200.0100.00017.35
8.1.190.0030.00517.22
8.1.180.0000.00818.10
8.1.170.0040.00418.88
8.1.160.0000.00719.01
8.1.150.0000.00718.62
8.1.140.0030.00517.30
8.1.130.0030.00317.74
8.1.120.0040.00417.41
8.1.110.0000.00817.29
8.1.100.0030.00317.41
8.1.90.0000.00717.38
8.1.80.0040.00417.42
8.1.70.0000.00717.27
8.1.60.0000.00817.46
8.1.50.0000.00717.38
8.1.40.0000.00717.52
8.1.30.0030.00517.64
8.1.20.0050.00417.54
8.1.10.0040.00417.53
8.1.00.0000.00817.40
8.0.300.0040.00420.02
8.0.290.0040.00416.75
8.0.280.0030.00318.49
8.0.270.0050.00317.17
8.0.260.0000.00616.88
8.0.250.0000.01016.98
8.0.240.0030.00316.97
8.0.230.0040.00416.92
8.0.220.0000.00716.80
8.0.210.0000.00716.83
8.0.200.0030.00316.89
8.0.190.0000.00816.93
8.0.180.0070.00016.75
8.0.170.0090.00016.64
8.0.160.0070.00016.91
8.0.150.0070.00016.73
8.0.140.0050.00316.81
8.0.130.0000.00513.26
8.0.120.0060.00316.85
8.0.110.0040.00416.86
8.0.100.0000.00716.70
8.0.90.0050.00316.82
8.0.80.0060.00916.78
8.0.70.0000.00716.89
8.0.60.0080.00016.64
8.0.50.0040.00416.85
8.0.30.0090.01217.29
8.0.20.0120.00817.02
8.0.10.0070.00016.95
8.0.00.0120.00816.60
7.4.330.0000.00513.11
7.4.320.0040.00416.52
7.4.300.0040.00416.61
7.4.290.0060.00016.43
7.4.280.0080.00016.59
7.4.270.0030.00316.59
7.4.260.0050.00013.25
7.4.250.0090.00016.64
7.4.240.0050.00216.61
7.4.230.0040.00416.48
7.4.220.0120.00916.50
7.4.210.0100.01016.64
7.4.200.0030.00316.50
7.4.190.0050.00316.64
7.4.160.0090.00616.62
7.4.150.0160.00616.50
7.4.140.0070.01016.52
7.4.130.0030.01316.55
7.4.120.0170.00016.43
7.4.110.0160.00716.48
7.4.100.0100.00716.75
7.4.90.0110.00816.45
7.4.80.0000.01719.39
7.4.70.0090.00616.58
7.4.60.0140.00316.53
7.4.50.0060.00016.52
7.4.40.0060.00916.53
7.4.30.0060.00916.47
7.4.00.0080.00414.81
7.3.330.0030.00313.25
7.3.320.0000.00513.42
7.3.310.0030.00316.46
7.3.300.0000.00616.39
7.3.290.0090.00916.40
7.3.280.0040.01416.39
7.3.270.0120.00616.30
7.3.260.0070.01016.46
7.3.250.0120.00916.38
7.3.240.0170.00016.41
7.3.230.0080.00816.46
7.3.210.0040.01216.72
7.3.200.0080.00816.39
7.3.190.0100.00916.47
7.3.180.0090.00616.44
7.3.170.0000.01716.48
7.3.160.0200.00316.34
7.3.120.0050.01214.92
7.3.110.0060.01414.96
7.3.100.0070.01014.70
7.3.90.0070.00714.80
7.3.80.0070.00714.86
7.3.70.0070.00714.91
7.3.60.0060.01014.87
7.3.50.0030.01215.01
7.3.40.0070.00414.80
7.3.30.0040.00714.64
7.3.20.0070.00716.75
7.3.10.0100.00316.75
7.3.00.0040.00816.85
7.2.330.0080.00816.80
7.2.320.0080.00816.52
7.2.310.0110.00616.75
7.2.300.0100.00716.50
7.2.290.0100.00716.83
7.2.250.0130.00715.38
7.2.240.0030.01615.23
7.2.230.0080.00415.25
7.2.220.0130.00014.82
7.2.210.0050.00515.07
7.2.200.0090.00615.13
7.2.190.0060.00915.17
7.2.180.0070.00715.06
7.2.170.0030.01214.89
7.2.00.0090.00619.39
7.1.330.0110.00416.03
7.1.320.0040.01215.70
7.1.310.0060.00915.86
7.1.300.0040.00715.74
7.1.290.0030.01015.91
7.1.280.0100.00315.55
7.1.270.0070.00715.73
7.1.260.0000.01315.71
7.1.100.0000.01218.16
7.1.70.0050.00317.19
7.1.60.0070.00416.97
7.1.50.0000.01616.86
7.1.00.0030.05022.44
7.0.200.0040.00816.89
7.0.140.0000.07721.96
7.0.120.0000.07022.13
7.0.60.0130.07020.00
7.0.50.0030.04017.88
7.0.40.0030.04720.06
7.0.30.0230.03320.11
7.0.20.0230.08720.19
7.0.10.0100.08720.07
7.0.00.0000.08020.24
5.6.280.0030.07321.09
5.6.210.0100.03720.55
5.6.200.0100.08718.16
5.6.190.0100.08720.46
5.6.180.0170.08320.50
5.6.170.0230.04720.48
5.6.160.0130.07720.51
5.6.150.0100.06318.19
5.6.140.0030.08718.18
5.6.130.0070.08318.23
5.6.120.0130.07321.13
5.6.110.0030.06720.96
5.6.100.0100.07720.99
5.6.90.0000.04721.18
5.6.80.0230.06320.29
5.6.70.4930.03320.50
5.5.350.0270.07720.39
5.5.340.0100.07718.10
5.5.330.0070.04020.48
5.5.320.0270.07320.27
5.5.310.0170.07320.20
5.5.300.0070.06318.03
5.5.290.0070.08318.03
5.5.280.0070.03720.77
5.5.270.0170.06720.87
5.5.260.0130.08020.84
5.5.250.0200.07020.67
5.5.240.0170.05020.15
5.4.450.0070.04019.53
5.4.440.0030.03719.20
5.4.430.0030.03719.18
5.4.420.0000.04019.48
5.4.410.0030.04019.32
5.4.400.0030.04319.27
5.4.390.0000.04019.17
5.4.380.0030.03719.08
5.4.370.0000.04018.92
5.4.360.0030.03719.12
5.4.350.0030.04319.15
5.4.340.0030.07019.25
5.4.320.0030.06718.93
5.4.310.0030.07719.25
5.4.300.0030.06319.11
5.4.290.0070.07019.14
5.4.280.0070.06718.96
5.4.270.0070.06319.11
5.4.260.0070.04719.14
5.4.250.0070.07319.20
5.4.240.0130.07319.07
5.4.230.0130.07019.23
5.4.220.0100.07318.84
5.4.210.0070.07018.92
5.4.200.0030.06318.84
5.4.190.0030.07319.23
5.4.180.0030.06019.13
5.4.170.0070.07718.84
5.4.160.0130.07018.98
5.4.150.0030.05319.13
5.4.140.0030.03716.50
5.4.130.0070.04016.50
5.4.120.0130.06716.55
5.4.110.0070.04016.30
5.4.100.0030.08316.39
5.4.90.0070.03316.34
5.4.80.0030.05316.37
5.4.70.0070.03316.52
5.4.60.0070.05316.27
5.4.50.0030.05716.37
5.4.40.0100.04716.39
5.4.30.0030.08016.34
5.4.20.0030.04716.27
5.4.10.0070.07716.46
5.4.00.0130.05715.94
5.3.290.0130.06714.66
5.3.280.0170.03314.65
5.3.270.0070.07714.62
5.3.260.0070.04314.61
5.3.250.0030.06314.75
5.3.240.0070.06014.61
5.3.230.0100.05714.64
5.3.220.0000.08014.57
5.3.210.0100.06714.56
5.3.200.0100.05714.71
5.3.190.0000.04314.57
5.3.180.0070.03714.61
5.3.170.0030.04314.57
5.3.160.0030.07714.58
5.3.150.0100.04314.72
5.3.140.0030.04014.56
5.3.130.0000.08714.54
5.3.120.0030.06714.51
5.3.110.0200.06014.60
5.3.100.0000.06314.04
5.3.90.0000.07314.05
5.3.80.0070.04314.02
5.3.70.0100.06714.05
5.3.60.0030.05714.02
5.3.50.0130.06314.00
5.3.40.0100.06714.10
5.3.30.0130.06313.92
5.3.20.0030.07713.70
5.3.10.0030.07313.66
5.3.00.0030.05013.68
5.2.170.0070.05011.21
5.2.160.0070.04311.22
5.2.150.0030.03711.20
5.2.140.0000.07011.14
5.2.130.0000.04011.11
5.2.120.0100.05711.18
5.2.110.0070.06011.11
5.2.100.0000.04311.11
5.2.90.0070.05711.15
5.2.80.0070.04311.10
5.2.70.0100.06311.06
5.2.60.0030.04311.02
5.2.50.0130.05310.95
5.2.40.0070.03310.88
5.2.30.0000.04310.97
5.2.20.0000.06311.03
5.2.10.0070.06010.83
5.2.00.0000.06310.74
5.1.60.0100.0479.90
5.1.50.0100.05010.14
5.1.40.0000.02710.06
5.1.30.0030.03710.38
5.1.20.0030.06010.32
5.1.10.0070.0539.97
5.1.00.0070.03710.06
5.0.50.0170.0208.71
5.0.40.0070.0378.38
5.0.30.0030.0308.30
5.0.20.0030.0408.30
5.0.10.0000.0478.34
5.0.00.0030.0378.30
4.4.90.0070.0278.30
4.4.80.0100.0138.30
4.4.70.0070.0278.30
4.4.60.0030.0378.30
4.4.50.0000.0308.30
4.4.40.0000.0508.30
4.4.30.0070.0138.30
4.4.20.0000.0278.30
4.4.10.0000.0338.30
4.4.00.0000.0478.30
4.3.110.0030.0208.30
4.3.100.0100.0278.30
4.3.90.0000.0238.30
4.3.80.0030.0238.30
4.3.70.0030.0338.30
4.3.60.0000.0338.30
4.3.50.0000.0408.30
4.3.40.0070.0478.30
4.3.30.0000.0338.30
4.3.20.0030.0308.30
4.3.10.0000.0378.30
4.3.00.0000.0338.30

preferences:
54.06 ms | 401 KiB | 5 Q