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; $mask = (0xff >> $offset) << (8 - $offset); $output = str_pad('', $inputlen + 1, "\x00"); var_dump($skip, $copylen, $offset, $mask, $output); if ($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); $right = (ord($input[$i + $skip + 1]) & $mask) >> $offset; printf("%08b|%08b\n", $left, $right); $output[$i] = chr($left | $right); } } //0b000100010001000100000000; string_shift_left("\x11\x11\x00", 2, 3, $output); for ($i = 0; $i < strlen($output); $i++) { printf('%08b|', ord($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)
8.3.40.0040.01118.70
8.3.30.0070.00719.13
8.3.20.0050.00320.39
8.3.10.0050.00322.09
8.3.00.0050.00322.34
8.2.170.0120.00322.96
8.2.160.0100.00619.16
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0020.00526.16
8.2.120.0050.00317.50
8.2.110.0090.00022.26
8.2.100.0090.00319.57
8.2.90.0040.00419.25
8.2.80.0030.00618.04
8.2.70.0030.00617.50
8.2.60.0050.00317.93
8.2.50.0100.00018.07
8.2.40.0040.00418.22
8.2.30.0030.00718.15
8.2.20.0070.00017.75
8.2.10.0050.00217.70
8.2.00.0030.00617.83
8.1.270.0040.00422.19
8.1.260.0000.00826.35
8.1.250.0050.00328.09
8.1.240.0000.00823.61
8.1.230.0040.00719.07
8.1.220.0090.00017.79
8.1.210.0040.00418.77
8.1.200.0040.00717.35
8.1.190.0090.00017.54
8.1.180.0000.00918.10
8.1.170.0050.00518.59
8.1.160.0000.00721.99
8.1.150.0040.00418.57
8.1.140.0070.00017.42
8.1.130.0070.00017.84
8.1.120.0000.00717.52
8.1.110.0060.00317.48
8.1.100.0040.00317.38
8.1.90.0050.00217.44
8.1.80.0040.00417.51
8.1.70.0000.00617.42
8.1.60.0030.00617.49
8.1.50.0000.00717.36
8.1.40.0040.00417.59
8.1.30.0040.00417.68
8.1.20.0040.00417.62
8.1.10.0060.00317.50
8.1.00.0080.00017.55
8.0.300.0000.00718.77
8.0.290.0040.00417.05
8.0.280.0000.00718.48
8.0.270.0030.00617.17
8.0.260.0030.00316.86
8.0.250.0080.00016.94
8.0.240.0000.00716.88
8.0.230.0070.00017.02
8.0.220.0030.00316.83
8.0.210.0000.00716.91
8.0.200.0030.00316.95
8.0.190.0070.00016.89
8.0.180.0040.00416.86
8.0.170.0030.00516.91
8.0.160.0030.00616.77
8.0.150.0030.00616.82
8.0.140.0030.00316.79
8.0.130.0050.00013.39
8.0.120.0000.00716.76
8.0.110.0000.00716.87
8.0.100.0040.00416.77
8.0.90.0040.00416.95
8.0.80.0070.00716.96
8.0.70.0000.00916.87
8.0.60.0000.00716.94
8.0.50.0000.00716.93
8.0.30.0060.01317.09
8.0.20.0120.00917.40
8.0.10.0040.00417.10
8.0.00.0120.00616.81
7.4.330.0050.00015.09
7.4.320.0000.00716.63
7.4.300.0000.00616.52
7.4.290.0030.00316.49
7.4.280.0030.00516.46
7.4.270.0030.00316.62
7.4.260.0000.00816.50
7.4.250.0040.00416.48
7.4.240.0030.00516.54
7.4.230.0040.00416.72
7.4.220.0030.01516.59
7.4.210.0100.00616.56
7.4.200.0030.00316.71
7.4.190.0030.00316.75
7.4.160.0080.00816.68
7.4.150.0140.00317.40
7.4.140.0090.01217.86
7.4.130.0100.00916.56
7.4.120.0110.00616.52
7.4.110.0070.01516.58
7.4.100.0120.01216.42
7.4.90.0060.01116.59
7.4.80.0120.01219.39
7.4.70.0060.01316.34
7.4.60.0110.00716.46
7.4.50.0000.00816.58
7.4.40.0040.01122.77
7.4.30.0120.00416.53
7.4.00.0040.01115.02
7.3.330.0030.00313.46
7.3.320.0000.00613.33
7.3.310.0040.00416.21
7.3.300.0000.00716.22
7.3.290.0100.01016.35
7.3.280.0100.00516.38
7.3.270.0090.01017.40
7.3.260.0110.00616.39
7.3.250.0130.00716.56
7.3.240.0160.00616.39
7.3.230.0090.00616.39
7.3.210.0120.00616.38
7.3.200.0180.00419.39
7.3.190.0070.01516.70
7.3.180.0040.01116.60
7.3.170.0030.01316.69
7.3.160.0110.00616.43
7.3.120.0110.00614.76
7.3.110.0070.01014.70
7.3.100.0030.01414.86
7.3.90.0060.01215.01
7.3.80.0070.00715.16
7.3.70.0090.00614.71
7.3.60.0100.00714.86
7.3.50.0040.01414.92
7.3.40.0110.00314.84
7.3.30.0070.00714.55
7.3.20.0100.00316.41
7.3.10.0050.00716.68
7.3.00.0070.00816.58
7.2.330.0170.00016.46
7.2.320.0200.00316.51
7.2.310.0120.01216.67
7.2.300.0080.01116.82
7.2.290.0060.01016.72
7.2.250.0070.01315.08
7.2.240.0040.00814.83
7.2.230.0110.00714.95
7.2.220.0110.00715.07
7.2.210.0030.01315.19
7.2.200.0060.01314.84
7.2.190.0100.01014.86
7.2.180.0040.01114.80
7.2.170.0060.00815.07
7.2.130.0060.00516.79
7.2.120.0050.00816.88
7.2.110.0080.00716.87
7.2.100.0040.00716.93
7.2.90.0070.00516.82
7.2.80.0050.00916.87
7.2.70.0050.00716.96
7.2.60.0040.00916.94
7.2.50.0030.01017.06
7.2.40.0030.00816.84
7.2.30.0050.00817.03
7.2.20.0060.00517.03
7.2.10.0060.00416.77
7.2.00.0010.01117.05
7.1.330.0060.01015.74
7.1.320.0060.01015.60
7.1.310.0030.01615.75
7.1.300.0110.00715.79
7.1.290.0090.00615.74
7.1.280.0030.00615.79
7.1.270.0060.00815.77
7.1.260.0100.00315.98
7.1.250.0040.00915.70
7.1.200.0030.01215.80
7.1.100.0080.00618.21
7.1.70.0040.00417.12
7.1.60.0140.01019.82
7.1.50.0030.00916.91
7.1.00.0030.09022.57
7.0.200.0090.00316.76
7.0.140.0000.07722.18
7.0.60.0100.08319.85
7.0.50.0070.08017.87
7.0.40.0070.09020.15
7.0.30.0300.03720.20
7.0.20.0400.06720.21
7.0.10.0170.04020.25
7.0.00.0070.08320.16
5.6.280.0030.07021.07
5.6.210.0070.06320.55
5.6.200.0030.07718.28
5.6.190.0170.07020.51
5.6.180.3430.04320.68
5.6.170.0200.03720.56
5.6.160.0100.04320.48
5.6.150.0030.05318.20
5.6.140.0170.04318.12
5.6.130.0100.07318.18
5.6.120.0070.04321.12
5.6.110.0130.07721.02
5.6.100.0170.06721.00
5.6.90.0100.08021.09
5.6.80.0130.06320.39
5.6.70.0370.06020.37
5.5.350.0070.08320.34
5.5.340.0100.05318.04
5.5.330.0100.09020.32
5.5.320.0270.04020.34
5.5.310.0270.06020.30
5.5.300.0070.08018.02
5.5.290.0100.04018.01
5.5.280.0170.07320.91
5.5.270.0100.08020.97
5.5.260.0070.08720.78
5.5.250.0130.07720.51
5.5.240.0070.04720.33
5.4.450.0800.05719.50
5.4.440.0730.05319.48
5.4.430.0030.06019.42
5.4.420.0130.05319.39
5.4.410.0170.05019.27
5.4.400.0170.05718.85
5.4.390.0130.05318.71
5.4.380.0130.05318.48
5.4.370.0200.04718.51
5.4.360.0200.04718.63
5.4.350.0170.05318.61
5.4.340.0200.05018.52
5.4.320.0100.03312.52
5.4.310.0080.04412.51
5.4.300.0110.03412.51
5.4.290.0050.03912.51
5.4.280.0060.03712.41
5.4.270.0130.06319.10
5.4.260.0200.04018.75
5.4.250.0170.04719.00
5.4.240.0070.05318.96
5.4.230.0130.07319.09
5.4.220.0130.07318.80
5.4.210.0030.06018.64
5.4.200.0100.05018.95
5.4.190.0100.08719.00
5.4.180.0100.05319.01
5.4.170.0030.05718.64
5.4.160.0100.06318.92
5.4.150.0170.06718.98
5.4.140.0100.07316.38
5.4.130.0030.07716.52
5.4.120.0170.04316.49
5.4.110.0030.07316.57
5.4.100.0030.07316.44
5.4.90.0230.04016.36
5.4.80.0100.06316.45
5.4.70.0130.06316.54
5.4.60.0130.04716.50
5.4.50.0100.05316.51
5.4.40.0100.07016.37
5.4.30.0100.07016.35
5.4.20.0230.06316.60
5.4.10.0070.06016.43
5.4.00.0100.06715.74
5.3.290.0050.04512.80
5.3.280.0000.06014.44
5.3.270.0130.07314.64
5.3.260.0070.08014.64
5.3.250.0170.06014.52
5.3.240.0170.06314.52
5.3.230.0070.07314.68
5.3.220.0200.06014.41
5.3.210.0130.06014.67
5.3.200.0230.05714.67
5.3.190.0170.05014.80
5.3.180.0130.06014.66
5.3.170.0170.04314.57
5.3.160.0130.04714.56
5.3.150.0170.07314.41
5.3.140.0130.06714.55
5.3.130.0030.07314.65
5.3.120.0030.08714.55
5.3.110.0130.06014.65
5.3.100.0100.06313.95
5.3.90.0070.06314.11
5.3.80.0170.05013.86
5.3.70.0170.05013.86
5.3.60.0030.06714.10
5.3.50.0170.05014.04
5.3.40.0070.05714.18
5.3.30.0030.07714.01
5.3.20.0100.04713.78
5.3.10.0030.05313.75
5.3.00.0030.07713.49
5.2.170.0070.04011.16
5.2.160.0170.05311.24
5.2.150.0200.03711.23
5.2.140.0030.04711.26
5.2.130.0070.05011.10
5.2.120.0130.05311.20
5.2.110.0100.05711.10
5.2.100.0100.03711.20
5.2.90.0000.04311.20
5.2.80.0170.03311.33
5.2.70.0030.07011.11
5.2.60.0170.03311.17
5.2.50.0130.05011.04
5.2.40.0100.05711.00
5.2.30.0100.06010.89
5.2.20.0070.05010.96
5.2.10.0030.04010.88
5.2.00.0030.05010.81
5.1.60.0070.0339.96
5.1.50.0030.03710.10
5.1.40.0100.03310.15
5.1.30.0030.05010.34
5.1.20.0000.04310.43
5.1.10.0030.03710.07
5.1.00.0070.04710.23
5.0.50.0100.0338.63
5.0.40.0030.0408.39
5.0.30.0100.0508.08
5.0.20.0200.0208.45
5.0.10.0030.0408.29
5.0.00.0070.0538.16
4.4.90.0030.0235.86
4.4.80.0030.0305.89
4.4.70.0030.0305.75
4.4.60.0030.0305.93
4.4.50.0070.0235.76
4.4.40.0070.0335.86
4.4.30.0030.0205.82
4.4.20.0000.0275.90
4.4.10.0000.0335.92
4.4.00.0000.0375.90
4.3.110.0030.0235.79
4.3.100.0000.0235.80
4.3.90.0000.0305.73
4.3.80.0030.0405.74
4.3.70.0030.0275.79
4.3.60.0030.0205.72
4.3.50.0000.0235.76
4.3.40.0030.0405.72
4.3.30.0030.0205.61
4.3.20.0000.0275.61
4.3.10.0030.0305.61
4.3.00.0100.0277.38

preferences:
35.51 ms | 400 KiB | 5 Q