3v4l.org

run code in 300+ PHP versions simultaneously
<?php function string_shift_left($input, $inputlen, $bits, &$output = null) { $skip = (int) ($bits / 8); $copylen = (int) ($inputlen - $skip); $offset = ($bits % 8) & 0xff; $mask = ~(0xff >> $offset) & 0xff; $output = str_pad('', $inputlen + 1, "\x00"); echo "$skip $copylen $offset $mask\n"; if ($offset == 0) { /* Shifting multiples of 8 allows us to simply copy the relevant bytes */ for ($i = 0; $i < $copylen; $i++) { $output[$i] = $input[$i + $skip]; } return; } for ($i = 0; $i < $copylen; $i++) { $left = (ord($input[$i + $skip]) << $offset) & 0xff; $right = (ord($input[$i + $skip + 1]) & $mask) >> (8 - $offset); printf("%08b %08b\n", $left, $right); $output[$i] = chr(($left | $right) & 0xff); } } //0b000100010001000100000000; $input = "abc\x00"; $bits = 10; string_shift_left($input, strlen($input) - 1, $bits, $output); for ($i = 0; $i < strlen($input); $i++) { printf("\n%02x: %08b", ord($input[$i]), ord($input[$i])); } for ($i = 0; $i < strlen($output); $i++) { printf("\n%02x: %08b", ord($output[$i]), ord($output[$i])); }

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)
8.3.60.0090.01218.39
8.3.50.0180.00322.12
8.3.40.0060.01018.80
8.3.30.0110.00419.04
8.3.20.0070.00020.04
8.3.10.0000.00821.95
8.3.00.0050.00322.35
8.2.180.0120.00918.41
8.2.170.0070.00722.96
8.2.160.0040.01119.20
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0030.00626.16
8.2.120.0000.00819.23
8.2.110.0060.00322.01
8.2.100.0110.00417.91
8.2.90.0050.00317.50
8.2.80.0000.00917.97
8.2.70.0000.00917.93
8.2.60.0050.00317.93
8.2.50.0030.00518.10
8.2.40.0040.00420.36
8.2.30.0060.00418.08
8.2.20.0000.00717.79
8.2.10.0030.00617.78
8.2.00.0050.00317.68
8.1.280.0070.00725.92
8.1.270.0080.00022.14
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0060.00322.20
8.1.230.0070.00419.10
8.1.220.0050.00317.80
8.1.210.0040.00418.77
8.1.200.0060.00317.36
8.1.190.0080.00017.35
8.1.180.0040.00818.10
8.1.170.0080.00018.45
8.1.160.0000.00722.04
8.1.150.0000.00718.60
8.1.140.0040.00417.51
8.1.130.0030.00317.74
8.1.120.0030.00517.48
8.1.110.0000.00717.43
8.1.100.0000.00717.39
8.1.90.0040.00417.49
8.1.80.0040.00417.53
8.1.70.0030.00317.40
8.1.60.0000.00917.49
8.1.50.0030.00617.38
8.1.40.0030.00517.58
8.1.30.0050.00317.56
8.1.20.0040.00417.55
8.1.10.0030.00617.59
8.1.00.0030.00517.36
8.0.300.0060.00319.57
8.0.290.0080.00016.63
8.0.280.0000.00718.50
8.0.270.0000.00717.34
8.0.260.0030.00316.82
8.0.250.0070.00016.95
8.0.240.0030.00316.90
8.0.230.0000.00716.88
8.0.220.0070.00016.86
8.0.210.0000.00716.95
8.0.200.0030.00316.88
8.0.190.0000.00716.95
8.0.180.0070.00016.83
8.0.170.0080.00016.93
8.0.160.0040.00416.89
8.0.150.0000.00716.73
8.0.140.0040.00416.85
8.0.130.0000.00613.33
8.0.120.0050.00216.87
8.0.110.0070.00016.93
8.0.100.0070.00016.77
8.0.90.0000.00817.02
8.0.80.0060.00916.93
8.0.70.0000.00716.90
8.0.60.0040.00416.91
8.0.50.0000.00716.73
8.0.30.0130.01017.10
8.0.20.0080.01117.40
8.0.10.0030.00616.98
8.0.00.0110.00716.71
7.4.330.0060.00015.00
7.4.320.0030.00316.61
7.4.300.0000.00716.49
7.4.290.0030.00316.61
7.4.280.0000.00616.57
7.4.270.0000.00816.61
7.4.260.0000.00716.41
7.4.250.0000.00816.59
7.4.240.0020.00616.58
7.4.230.0070.00016.60
7.4.220.0190.00616.52
7.4.210.0090.00716.56
7.4.200.0070.00016.69
7.4.190.0030.00316.47
7.4.160.0070.01016.59
7.4.150.0110.00617.40
7.4.140.0120.00917.86
7.4.130.0060.01216.51
7.4.120.0060.01016.57
7.4.110.0160.00016.56
7.4.100.0000.01816.61
7.4.90.0030.01516.57
7.4.80.0000.02119.39
7.4.70.0140.00716.45
7.4.60.0090.00916.59
7.4.50.0030.00616.27
7.4.40.0070.01022.77
7.4.30.0070.01016.48
7.4.00.0030.01215.18
7.3.330.0000.00613.21
7.3.320.0000.00513.32
7.3.310.0000.00816.47
7.3.300.0030.00316.24
7.3.290.0120.00316.36
7.3.280.0100.00716.35
7.3.270.0090.01117.40
7.3.260.0120.01216.59
7.3.250.0130.00616.45
7.3.240.0110.00816.39
7.3.230.0090.01316.39
7.3.210.0170.00316.63
7.3.200.0060.01619.39
7.3.190.0060.01716.54
7.3.180.0000.01516.65
7.3.170.0060.00916.64
7.3.160.0040.01216.47
7.3.120.0030.01014.96
7.2.330.0060.01216.55
7.2.320.0070.01516.85
7.2.310.0120.00916.78
7.2.300.0100.00716.84
7.2.290.0120.00916.58
7.2.00.0060.00919.45
7.1.100.0040.00718.21
7.1.70.0040.00417.09
7.1.60.0090.01619.82
7.1.50.0090.01316.99
7.1.00.0000.08022.31
7.0.200.0060.00616.46
7.0.140.0000.08021.99
7.0.110.0530.08020.13
7.0.100.0830.07320.00
7.0.90.0830.07319.96
7.0.80.0770.07720.09
7.0.70.0870.04719.89
7.0.60.0970.07320.05
7.0.50.0830.07320.13
7.0.40.0070.07719.59
7.0.30.0070.08319.82
7.0.20.0100.08019.74
7.0.10.0170.06019.74
7.0.00.0030.08719.73
5.6.280.0070.07021.10
5.6.260.0130.07020.70
5.6.250.0100.08020.67
5.6.240.0000.08320.70
5.6.230.0000.09020.67
5.6.220.0130.07020.51
5.6.210.0130.06720.72
5.6.200.0070.08320.66
5.6.190.0000.07020.71
5.6.180.0130.06320.59
5.6.170.0000.08320.70
5.6.160.0000.07020.63
5.6.150.0100.07320.69
5.6.140.0070.07720.47
5.6.130.0170.07320.62
5.6.120.0170.07320.65
5.6.110.0100.08020.65
5.6.100.0170.07020.68
5.6.90.0030.08720.65
5.6.80.0030.07720.10
5.6.70.0130.07320.00
5.6.60.0100.08020.00
5.6.50.0100.08319.98
5.6.40.0000.08320.05
5.6.30.0070.07020.02
5.6.20.0000.08319.92
5.6.10.0070.07719.92
5.6.00.0170.07019.84
5.5.380.0100.08320.52
5.5.370.0130.07320.55
5.5.360.0130.07320.38
5.5.350.0070.08720.54
5.5.340.0000.07721.05
5.5.330.0170.07720.85
5.5.320.0130.07720.77
5.5.310.0100.07720.96
5.5.300.0100.08320.68
5.5.290.0170.07720.96
5.5.280.0130.07320.99
5.5.270.0100.07720.91
5.5.260.0100.08020.81
5.5.250.0100.07720.66
5.5.240.0070.08020.20
5.5.230.0100.07720.36
5.5.220.0170.07720.27
5.5.210.0070.08320.20
5.5.200.0170.05320.20
5.5.190.0030.07720.10
5.5.180.0170.06320.26
5.5.160.0070.08020.17
5.5.150.0100.07320.13
5.5.140.0070.06320.20
5.5.130.0070.07720.33
5.5.120.0170.06020.26
5.5.110.0070.05020.27
5.5.100.0100.06720.04
5.5.90.0030.06020.26
5.5.80.0070.07720.26
5.5.70.0130.07020.11
5.5.60.0100.06320.25
5.5.50.0100.07320.15
5.5.40.0070.07720.24
5.5.30.0030.08020.13
5.5.20.0070.07320.22
5.5.10.0100.07720.12
5.5.00.0030.08019.93
5.4.450.0100.07719.51
5.4.440.0070.07319.27
5.4.430.0100.07719.55
5.4.420.0170.07019.66
5.4.410.0070.04719.21
5.4.400.0070.08318.99
5.4.390.0070.06318.95
5.4.380.0100.07319.32
5.4.370.0300.04718.99
5.4.360.0130.06719.03
5.4.350.0030.08319.14
5.4.340.0070.07019.16
5.4.320.0070.05319.01
5.4.310.0070.08018.98
5.4.300.0070.07719.34
5.4.290.0200.06019.18
5.4.280.0200.05719.31
5.4.270.0030.07719.05
5.4.260.0100.06719.00
5.4.250.0000.05319.18
5.4.240.0070.08018.98
5.4.230.0070.07719.17
5.4.220.0100.07319.34
5.4.210.0130.06719.21
5.4.200.0130.06719.02
5.4.190.0030.07319.09
5.4.180.0100.07319.21
5.4.170.0130.07019.08
5.4.160.0130.07018.99
5.4.150.0100.07319.16
5.4.140.0100.07316.29
5.4.130.0130.06316.59
5.4.120.0070.07016.36
5.4.110.0100.06716.43
5.4.100.0100.04016.65
5.4.90.0070.06716.27
5.4.80.0030.06716.48
5.4.70.0170.03316.39
5.4.60.0070.06716.57
5.4.50.0070.06316.47
5.4.40.0100.06716.43
5.4.30.0130.07016.24
5.4.20.0030.07716.29
5.4.10.0030.07316.39
5.4.00.0000.08016.04
5.3.290.0130.07314.72
5.3.280.0070.07714.71
5.3.270.0070.07714.48
5.3.260.0070.08314.70
5.3.250.0070.07714.60
5.3.240.0100.07714.75
5.3.230.0070.07314.62
5.3.220.0070.07314.59
5.3.210.0000.05014.57
5.3.200.0000.07714.66
5.3.190.0130.07014.82
5.3.180.0130.06714.70
5.3.170.0030.06714.54
5.3.160.0100.07014.53
5.3.150.0000.08014.80
5.3.140.0070.07314.56
5.3.130.0070.07014.60
5.3.120.0030.07714.42
5.3.110.0100.07714.70
5.3.100.0100.07314.28
5.3.90.0070.07714.04
5.3.80.0100.07314.13
5.3.70.0100.07314.17
5.3.60.0100.07714.03
5.3.50.0070.04314.19
5.3.40.0100.07314.19
5.3.30.0030.07313.93
5.3.20.0100.06713.93
5.3.10.0000.07713.67
5.3.00.0070.04313.69
5.2.170.0100.05312.09
5.2.160.0030.06312.09
5.2.150.0100.06012.09
5.2.140.0030.06712.09
5.2.130.0000.04312.09
5.2.120.0000.03012.09
5.2.110.0070.03712.09
5.2.100.0030.06312.09
5.2.90.0030.06312.09
5.2.80.0070.03312.09
5.2.70.0100.06012.09
5.2.60.0170.05312.09
5.2.50.0070.06312.09
5.2.40.0030.06312.09
5.2.30.0070.06312.09
5.2.20.0030.06012.09
5.2.10.0070.03312.09
5.2.00.0000.06312.09
5.1.60.0100.05312.09
5.1.50.0030.05712.09
5.1.40.0100.04712.09
5.1.30.0070.05312.09
5.1.20.0030.05712.09
5.1.10.0100.05012.09
5.1.00.0030.04712.09
5.0.50.0170.03312.09
5.0.40.0070.04012.09
5.0.30.0100.05712.09
5.0.20.0070.03312.09
5.0.10.0070.04012.09
5.0.00.0030.06712.09
4.4.90.0000.03712.09
4.4.80.0070.03012.09
4.4.70.0070.03312.09
4.4.60.0070.03312.09
4.4.50.0000.03712.09
4.4.40.0000.05012.09
4.4.30.0000.02712.09
4.4.20.0070.03312.09
4.4.10.0030.03312.09
4.4.00.0000.05312.09
4.3.110.0000.02712.09
4.3.100.0070.02712.09
4.3.90.0070.02712.09
4.3.80.0030.05312.09
4.3.70.0030.03312.09
4.3.60.0030.03312.09
4.3.50.0030.03312.09
4.3.40.0000.05312.09
4.3.30.0000.04012.09
4.3.20.0000.02712.09
4.3.10.0030.03312.09
4.3.00.0030.03712.09

preferences:
47.55 ms | 401 KiB | 5 Q