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; $map[25] = 1; echo createStringFromMap($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)
8.3.60.0130.00318.43
8.3.50.0110.00822.11
8.3.40.0140.00718.67
8.3.30.0050.01018.80
8.3.20.0040.00418.91
8.3.10.0080.00021.22
8.3.00.0080.00021.89
8.2.180.0110.00416.38
8.2.170.0000.01522.96
8.2.160.0100.01020.39
8.2.150.0110.00724.18
8.2.140.0180.00024.66
8.2.130.0040.00426.16
8.2.120.0050.00321.00
8.2.110.0050.00520.56
8.2.100.0060.00617.84
8.2.90.0040.00419.36
8.2.80.0030.00517.97
8.2.70.0060.00617.50
8.2.60.0050.00318.04
8.2.50.0030.00618.07
8.2.40.0060.00318.22
8.2.30.0050.00319.44
8.2.20.0000.00717.85
8.2.10.0040.00417.69
8.2.00.0000.01017.60
8.1.280.0090.00925.92
8.1.270.0040.01423.99
8.1.260.0070.01026.35
8.1.250.0170.00028.09
8.1.240.0060.00322.43
8.1.230.0080.00320.88
8.1.220.0050.00318.77
8.1.210.0050.00318.88
8.1.200.0060.00317.35
8.1.190.0070.00017.40
8.1.180.0000.00818.10
8.1.170.0050.00318.50
8.1.160.0000.00718.89
8.1.150.0020.00518.49
8.1.140.0040.00417.39
8.1.130.0070.00017.70
8.1.120.0070.00017.42
8.1.110.0040.00417.40
8.1.100.0040.00417.32
8.1.90.0040.00417.40
8.1.80.0040.00417.37
8.1.70.0000.00817.41
8.1.60.0030.00517.63
8.1.50.0040.00417.34
8.1.40.0000.00817.48
8.1.30.0040.00417.64
8.1.20.0040.00417.70
8.1.10.0070.00017.54
8.1.00.0000.00817.40
8.0.300.0000.00720.04
8.0.290.0070.00017.18
8.0.280.0040.00418.48
8.0.270.0030.00317.25
8.0.260.0000.00716.83
8.0.250.0000.00716.98
8.0.240.0080.00417.01
8.0.230.0040.00416.89
8.0.220.0000.00716.69
8.0.210.0030.00316.87
8.0.200.0000.00616.96
8.0.190.0040.00416.94
8.0.180.0000.00816.70
8.0.170.0000.00716.86
8.0.160.0000.00816.86
8.0.150.0040.00416.83
8.0.140.0030.00516.63
8.0.130.0000.00613.22
8.0.120.0000.00716.78
8.0.110.0030.00616.73
8.0.100.0040.00416.89
8.0.90.0000.00716.85
8.0.80.0120.00616.83
8.0.70.0000.00716.69
8.0.60.0000.00716.89
8.0.50.0050.00316.89
8.0.30.0070.01217.15
8.0.20.0160.01017.40
8.0.10.0070.00016.79
8.0.00.0060.01516.82
7.4.330.0000.00416.77
7.4.320.0030.00316.50
7.4.300.0060.00016.49
7.4.290.0030.00316.43
7.4.280.0030.00316.41
7.4.270.0070.00016.40
7.4.260.0000.00513.22
7.4.250.0040.00416.46
7.4.240.0030.00316.61
7.4.230.0000.00716.71
7.4.220.0070.00716.51
7.4.210.0050.01016.56
7.4.200.0000.00716.63
7.4.190.0050.00316.56
7.4.160.0090.00616.36
7.4.150.0090.00917.40
7.4.140.0070.01017.86
7.4.130.0100.00916.56
7.4.120.0050.01216.51
7.4.110.0140.00416.71
7.4.100.0130.01016.48
7.4.90.0110.00716.59
7.4.80.0120.00419.39
7.4.70.0140.00316.48
7.4.60.0100.00716.49
7.4.50.0000.00816.24
7.4.40.0090.00622.77
7.4.30.0090.00616.50
7.4.10.0060.01314.55
7.4.00.0100.00814.96
7.3.330.0050.00013.21
7.3.320.0030.00313.38
7.3.310.0070.00016.48
7.3.300.0000.00716.26
7.3.290.0070.01116.36
7.3.280.0080.00916.38
7.3.270.0030.01617.40
7.3.260.0100.00618.24
7.3.250.0060.01116.63
7.3.240.0120.01216.39
7.3.230.0070.01016.64
7.3.210.0100.01316.43
7.3.200.0110.01019.39
7.3.190.0140.00316.36
7.3.180.0090.00616.67
7.3.170.0140.00616.60
7.3.160.0120.00416.56
7.3.130.0060.01214.64
7.3.120.0090.00714.83
7.3.110.0060.01114.52
7.3.100.0100.00514.99
7.3.90.0080.00814.89
7.3.80.0050.01114.98
7.3.70.0040.00914.67
7.3.60.0050.00714.81
7.3.50.0100.00314.75
7.3.40.0100.00314.74
7.3.30.0060.00914.97
7.3.20.0080.00416.55
7.3.10.0090.00316.59
7.3.00.0070.00616.50
7.2.330.0150.00816.84
7.2.320.0170.00616.39
7.2.310.0030.01516.68
7.2.300.0070.01016.42
7.2.290.0070.01016.76
7.2.260.0040.01414.95
7.2.250.0120.00714.91
7.2.240.0120.00714.91
7.2.230.0050.01215.01
7.2.220.0080.00715.17
7.2.210.0080.01015.05
7.2.200.0040.00914.86
7.2.190.0070.00714.97
7.2.180.0070.00814.95
7.2.170.0030.01314.91
7.2.160.0040.00414.71
7.2.150.0040.01116.66
7.2.140.0070.00416.50
7.2.130.0050.00916.74
7.2.120.0060.01116.93
7.2.110.0070.00716.61
7.2.100.0080.01116.80
7.2.90.0100.01017.03
7.2.80.0130.00316.83
7.2.70.0070.01016.74
7.2.60.0090.00516.66
7.2.50.0070.00716.60
7.2.40.0080.00916.60
7.2.30.0130.00216.99
7.2.20.0120.00716.63
7.2.10.0110.00716.69
7.2.00.0060.01017.67
7.1.330.0020.01215.86
7.1.320.0040.00915.80
7.1.310.0100.00615.45
7.1.300.0030.00915.61
7.1.290.0050.00815.70
7.1.280.0020.01215.90
7.1.270.0090.00515.70
7.1.260.0030.01015.68
7.1.250.0040.01215.77
7.1.240.0040.00715.62
7.1.230.0100.00315.80
7.1.220.0070.00715.70
7.1.210.0060.00915.73
7.1.200.0110.00715.62
7.1.190.0050.01215.68
7.1.180.0050.01115.76
7.1.170.0080.01015.77
7.1.160.0070.00715.69
7.1.150.0100.00315.76
7.1.140.0110.00615.62
7.1.130.0100.00515.57
7.1.120.0080.00915.78
7.1.110.0060.00815.66
7.1.100.0060.00916.46
7.1.90.0090.00815.72
7.1.80.0110.00415.50
7.1.70.0020.01016.20
7.1.60.0070.01016.82
7.1.50.0090.00715.95
7.1.40.0070.00715.51
7.1.30.0080.00715.63
7.1.20.0090.00315.61
7.1.10.0040.01115.86
7.1.00.0060.01918.02
7.0.330.0080.00715.33
7.0.320.0070.00915.28
7.0.310.0100.00515.42
7.0.300.0050.00815.24
7.0.290.0050.01015.53
7.0.280.0060.00815.43
7.0.270.0070.00615.41
7.0.260.0040.01115.38
7.0.250.0090.00715.41
7.0.240.0070.00915.48
7.0.230.0090.00715.34
7.0.220.0090.00615.47
7.0.210.0100.00515.57
7.0.200.0090.00615.77
7.0.190.0110.00615.45
7.0.180.0120.00715.33
7.0.170.0080.00815.22
7.0.160.0050.00815.34
7.0.150.0050.00715.35
7.0.140.0080.02517.65
7.0.130.0090.00915.29
7.0.120.0080.00915.30
7.0.110.0110.00515.23
7.0.100.0080.00615.15
7.0.90.0090.00615.43
7.0.80.0140.00515.39
7.0.70.0040.02817.39
7.0.60.0070.03117.46
7.0.50.0090.03217.62
7.0.40.0070.03215.60
7.0.30.0080.03115.58
7.0.20.0030.03515.51
7.0.10.0060.03315.62
7.0.00.0040.03115.50
5.6.400.0000.00814.64
5.6.390.0070.00714.46
5.6.380.0110.00614.66
5.6.370.0070.00614.67
5.6.360.0070.00514.44
5.6.350.0050.00814.35
5.6.340.0070.01014.18
5.6.330.0060.00914.32
5.6.320.0060.00814.38
5.6.310.0060.00814.21
5.6.300.0090.00414.47
5.6.290.0080.00914.60
5.6.280.0080.00414.46
5.6.270.0050.00814.50
5.6.260.0120.00514.34
5.6.250.0080.00614.07
5.6.240.0040.00614.34
5.6.230.0060.01114.15
5.6.220.0060.03116.41
5.6.210.0040.03316.48
5.6.200.0040.03516.58
5.6.190.0040.02616.61
5.6.180.0060.03216.79
5.6.170.0060.03016.59
5.6.160.0040.02616.59
5.6.150.0090.02916.72
5.6.140.0050.02516.48
5.6.130.0050.03116.57
5.6.120.0040.03416.60
5.6.110.0060.03316.57
5.6.100.0070.03316.44
5.6.90.0080.02716.70
5.6.80.0040.02016.28
5.6.70.0060.03216.39
5.6.60.0020.03316.43
5.6.50.0060.02816.34
5.6.40.0070.02216.27
5.6.30.0080.02716.22
5.6.20.0090.02916.21
5.6.10.0030.02316.20
5.6.00.0030.02116.46
5.5.380.0020.01112.63
5.5.370.0080.00712.79
5.5.360.0070.03115.26
5.5.350.0080.02815.30
5.5.340.0070.03215.53
5.5.330.0040.03315.47
5.5.320.0090.02915.33
5.5.310.0060.03115.46
5.5.300.0040.02915.36
5.5.290.0070.02615.43
5.5.280.0030.03315.55
5.5.270.0050.03515.55
5.5.260.0060.02615.58
5.5.250.0110.02515.34
5.5.240.0020.01815.21
5.5.230.0030.03215.35
5.5.220.0050.03015.31
5.5.210.0040.03215.29
5.5.200.0050.02715.29
5.5.190.0030.02815.23
5.5.180.0040.03215.19
5.5.170.0020.00812.65
5.5.160.0060.01615.22
5.5.150.0050.02315.32
5.5.140.0020.03215.20
5.5.130.0070.02815.19
5.5.120.0080.02015.11
5.5.110.0030.02715.36
5.5.100.0070.02615.13
5.5.90.0060.03015.21
5.5.80.0050.02815.20
5.5.70.0060.03215.14
5.5.60.0070.02715.22
5.5.50.0070.02215.24
5.5.40.0020.02715.18
5.5.30.0030.02615.27
5.5.20.0030.03015.09
5.5.10.0030.02815.24
5.5.00.0050.02915.17
5.4.450.0030.03114.25
5.4.440.0020.03014.25
5.4.430.0080.02714.24
5.4.420.0020.03314.33
5.4.410.0060.01614.13
5.4.400.0050.01614.03
5.4.390.0040.02614.17
5.4.380.0040.02814.18
5.4.370.0060.02614.08
5.4.360.0050.02914.09
5.4.350.0030.02514.03
5.4.340.0070.02314.07
5.4.330.0040.00511.67
5.4.320.0020.01814.26
5.4.310.0030.02614.01
5.4.300.0090.02614.16
5.4.290.0090.02414.08
5.4.280.0020.02414.04
5.4.270.0040.02914.15
5.4.260.0020.02114.21
5.4.250.0050.02514.18
5.4.240.0040.02414.15
5.4.230.0060.02214.05
5.4.220.0060.02714.20
5.4.210.0050.02214.14
5.4.200.0060.02814.19
5.4.190.0050.02514.18
5.4.180.0020.03014.08
5.4.170.0040.02114.12
5.4.160.0020.03114.13
5.4.150.0050.02314.15
5.4.140.0050.02513.33
5.4.130.0070.02313.28
5.4.120.0020.02713.26
5.4.110.0080.02513.11
5.4.100.0040.02813.24
5.4.90.0020.02713.32
5.4.80.0060.01613.18
5.4.70.0040.02813.21
5.4.60.0060.01513.26
5.4.50.0040.02813.31
5.4.40.0020.02713.28
5.4.30.0010.03313.18
5.4.20.0080.02613.27
5.4.10.0020.03213.26
5.4.00.0020.03013.01
5.3.290.0050.02712.46
5.3.280.0020.03212.49
5.3.270.0040.02812.40
5.3.260.0050.02812.48
5.3.250.0070.02312.54
5.3.240.0020.02312.49
5.3.230.0090.01712.50
5.3.220.0020.03112.35
5.3.210.0030.02212.43
5.3.200.0030.02312.38
5.3.190.0000.02312.42
5.3.180.0020.02312.54
5.3.170.0050.01912.52
5.3.160.0030.03012.53
5.3.150.0070.02612.39
5.3.140.0020.02212.44
5.3.130.0030.02312.47
5.3.120.0040.02812.41
5.3.110.0050.02812.39
5.3.100.0030.02712.27
5.3.90.0010.03212.34
5.3.80.0020.03012.28
5.3.70.0050.02212.33
5.3.60.0030.02812.29
5.3.50.0070.02512.14
5.3.40.0020.02612.19
5.3.30.0000.03012.27
5.3.20.0030.02212.13
5.3.10.0020.02812.09
5.3.00.0010.03011.98
5.2.170.0060.03210.66
5.2.160.0000.03210.61
5.2.150.0040.03310.61
5.2.140.0020.03610.60
5.2.130.0060.01910.60
5.2.120.0070.02210.58
5.2.110.0010.03610.64
5.2.100.0060.03010.57
5.2.90.0060.02810.60
5.2.80.0000.03910.50
5.2.70.0060.02710.60
5.2.60.0090.03010.59
5.2.50.0030.03010.58
5.2.40.0030.02510.52
5.2.30.0020.03210.53
5.2.20.0030.03510.49
5.2.10.0020.03110.48
5.2.00.0020.01710.42
5.1.60.0020.02910.42
5.1.50.0050.02510.42
5.1.40.0050.02510.42
5.1.30.0050.02610.42
5.1.20.0020.03210.42
5.1.10.0060.02710.42
5.1.00.0020.03110.42
5.0.50.0020.02310.42
5.0.40.0050.02310.42
5.0.30.0020.03210.42
5.0.20.0020.02410.42
5.0.10.0020.02310.42
5.0.00.0000.03310.42
4.4.90.0050.01710.42
4.4.80.0000.02210.42
4.4.70.0030.01810.42
4.4.60.0000.02210.42
4.4.50.0030.01710.42
4.4.40.0000.03110.42
4.4.30.0010.01710.42
4.4.20.0030.01910.42
4.4.10.0050.01310.42
4.4.00.0000.02810.42
4.3.110.0000.02010.42
4.3.100.0020.01810.42
4.3.90.0030.01810.42
4.3.80.0020.02610.42
4.3.70.0040.01510.42
4.3.60.0000.02010.42
4.3.50.0020.01610.42
4.3.40.0030.02810.42
4.3.30.0000.01710.42
4.3.20.0030.01710.42
4.3.10.0020.01710.42
4.3.00.0030.01410.42

preferences:
50.58 ms | 400 KiB | 5 Q