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 >> (8 - $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); $right = (ord($input[$i + $skip + 1]) & $mask) >> $offset; printf("%02x ", $left | $right); $output[$i] = chr($left | $right); } } //0b000100010001000100000000; $str = "abc\x00"; $bits = 2; string_shift_left($str, strlen($str) - 1, $bits, $output); for ($i = 0; $i < strlen($output); $i++) { printf("\n%02x", ord($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)
8.3.60.0170.00318.43
8.3.50.0150.00722.04
8.3.40.0070.00718.63
8.3.30.0080.00519.21
8.3.20.0000.00720.42
8.3.10.0040.00422.09
8.3.00.0040.00422.31
8.2.180.0110.00416.75
8.2.170.0100.00722.96
8.2.160.0060.00919.28
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0130.00726.16
8.2.120.0000.00817.63
8.2.110.0040.00422.25
8.2.100.0130.00319.35
8.2.90.0000.00719.16
8.2.80.0040.00417.97
8.2.70.0030.00517.63
8.2.60.0060.00317.93
8.2.50.0040.00818.07
8.2.40.0050.00518.34
8.2.30.0030.00618.13
8.2.20.0000.00817.66
8.2.10.0040.00419.58
8.2.00.0050.00317.75
8.1.280.0100.01025.92
8.1.270.0040.00422.14
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0090.00023.90
8.1.230.0040.00719.17
8.1.220.0030.00617.74
8.1.210.0040.00418.77
8.1.200.0030.00717.34
8.1.190.0030.00517.51
8.1.180.0040.00418.10
8.1.170.0060.00318.53
8.1.160.0000.00822.11
8.1.150.0060.00318.53
8.1.140.0000.00717.48
8.1.130.0040.00417.84
8.1.120.0040.00417.38
8.1.110.0040.00417.46
8.1.100.0030.00517.37
8.1.90.0000.00717.36
8.1.80.0040.00417.40
8.1.70.0030.00317.45
8.1.60.0040.00417.61
8.1.50.0040.00417.47
8.1.40.0040.00417.48
8.1.30.0040.00417.65
8.1.20.0030.00617.67
8.1.10.0000.00817.61
8.1.00.0030.00617.54
8.0.300.0070.00018.77
8.0.290.0080.00017.05
8.0.280.0080.00018.38
8.0.270.0040.00417.18
8.0.260.0070.00016.88
8.0.250.0080.00017.04
8.0.240.0000.00717.01
8.0.230.0000.00817.04
8.0.220.0030.00316.92
8.0.210.0070.00016.89
8.0.200.0060.00016.97
8.0.190.0000.00717.02
8.0.180.0050.00216.95
8.0.170.0000.00716.94
8.0.160.0000.00716.91
8.0.150.0000.00716.94
8.0.140.0040.00416.78
8.0.130.0000.00513.33
8.0.120.0040.00416.86
8.0.110.0040.00416.87
8.0.100.0040.00416.69
8.0.90.0030.00516.90
8.0.80.0120.00316.84
8.0.70.0000.00816.86
8.0.60.0070.00016.98
8.0.50.0000.00716.86
8.0.30.0070.01217.29
8.0.20.0100.00917.40
8.0.10.0040.00417.14
8.0.00.0080.01216.84
7.4.330.0040.00415.00
7.4.320.0000.00616.61
7.4.300.0030.00316.64
7.4.290.0030.00516.54
7.4.280.0000.00716.62
7.4.270.0070.00016.54
7.4.260.0030.00516.60
7.4.250.0000.00816.58
7.4.240.0040.00416.45
7.4.230.0070.00016.61
7.4.220.0070.01016.54
7.4.210.0070.00816.54
7.4.200.0000.00716.72
7.4.190.0000.00716.59
7.4.160.0130.00316.41
7.4.150.0070.01117.40
7.4.140.0160.01517.86
7.4.130.0080.01016.56
7.4.120.0100.00616.53
7.4.110.0120.00616.29
7.4.100.0140.00416.48
7.4.90.0110.00716.52
7.4.80.0110.01119.39
7.4.70.0150.00716.53
7.4.60.0200.00016.43
7.4.50.0000.00416.62
7.4.40.0080.00822.77
7.4.30.0100.00516.63
7.4.00.0070.00914.89
7.3.330.0000.00513.22
7.3.320.0000.00613.25
7.3.310.0030.00516.20
7.3.300.0070.00016.22
7.3.290.0030.01116.43
7.3.280.0080.00816.33
7.3.270.0090.01217.40
7.3.260.0070.01016.61
7.3.250.0110.00616.53
7.3.240.0100.01416.61
7.3.230.0070.01016.39
7.3.210.0130.00316.53
7.3.200.0090.01319.39
7.3.190.0080.00816.31
7.3.180.0090.00616.31
7.3.170.0070.01016.32
7.3.160.0170.00016.40
7.3.120.0050.00914.81
7.3.110.0100.01015.01
7.3.100.0070.00714.60
7.3.90.0060.00614.71
7.3.80.0100.00315.08
7.3.70.0070.01015.03
7.3.60.0060.00914.64
7.3.50.0080.00414.95
7.3.40.0060.01014.73
7.3.30.0090.00614.71
7.3.20.0030.00716.85
7.3.10.0030.00616.77
7.3.00.0090.00916.59
7.2.330.0110.00716.76
7.2.320.0160.00616.72
7.2.310.0070.01416.61
7.2.300.0080.00816.82
7.2.290.0060.01216.48
7.2.250.0080.01215.19
7.2.240.0150.00615.13
7.2.230.0060.00915.09
7.2.220.0060.00915.05
7.2.210.0000.01215.36
7.2.200.0070.01015.22
7.2.190.0040.00815.02
7.2.180.0060.00915.11
7.2.170.0030.00715.16
7.2.130.0000.00917.13
7.2.120.0070.01016.81
7.2.110.0130.00016.80
7.2.100.0000.01216.92
7.2.90.0070.01017.02
7.2.80.0110.00016.87
7.2.70.0060.01116.99
7.2.60.0000.01517.12
7.2.50.0030.00916.79
7.2.40.0110.00016.91
7.2.30.0060.00917.01
7.2.20.0130.00317.10
7.2.10.0030.00816.97
7.2.00.0050.01018.25
7.1.330.0090.00615.87
7.1.320.0000.01615.71
7.1.310.0070.00715.85
7.1.300.0030.00915.97
7.1.290.0090.00615.52
7.1.280.0060.00915.91
7.1.270.0040.00715.82
7.1.260.0070.00715.93
7.1.250.0040.00815.68
7.1.240.0030.00915.86
7.1.230.0080.00415.67
7.1.220.0040.00715.70
7.1.210.0000.01115.64
7.1.200.0090.00915.71
7.1.190.0060.00315.84
7.1.180.0050.00815.95
7.1.170.0100.00015.62
7.1.160.0100.00315.89
7.1.150.0120.00315.82
7.1.140.0030.00915.93
7.1.130.0080.00315.83
7.1.120.0000.01415.99
7.1.110.0030.01015.73
7.1.100.0050.00716.93
7.1.90.0070.00715.70
7.1.80.0030.01215.72
7.1.70.0020.01016.53
7.1.60.0050.01417.82
7.1.50.0030.01216.29
7.1.40.0030.00615.82
7.1.30.0060.00615.70
7.1.20.0000.01515.69
7.1.10.0040.00715.89
7.1.00.0060.04119.25
7.0.330.0040.00815.14
7.0.320.0030.00715.46
7.0.310.0030.01015.41
7.0.300.0060.00315.51
7.0.290.0060.00915.26
7.0.280.0030.00715.54
7.0.270.0000.01715.34
7.0.260.0070.00415.43
7.0.250.0100.00015.55
7.0.240.0030.00715.43
7.0.230.0050.00515.41
7.0.220.0100.00315.41
7.0.210.0000.01315.45
7.0.200.0070.00515.96
7.0.190.0040.00715.57
7.0.180.0030.01015.40
7.0.170.0130.00315.49
7.0.160.0030.00615.36
7.0.150.0130.00315.07
7.0.140.0050.04018.70
7.0.130.0040.01115.48
7.0.120.0070.00715.29
7.0.110.0030.00915.33
7.0.100.0050.04417.60
7.0.90.0200.04517.70
7.0.80.0180.02317.73
7.0.70.0170.03517.68
7.0.60.0140.04917.72
7.0.50.0200.04717.94
7.0.40.0030.04916.73
7.0.30.0110.04316.70
7.0.20.0110.02316.65
7.0.10.0070.04216.76
7.0.00.0020.03816.83
5.6.380.0000.00914.54
5.6.370.0000.00914.24
5.6.360.0030.00914.30
5.6.350.0030.01314.43
5.6.340.0070.00714.69
5.6.330.0000.01714.53
5.6.320.0030.01014.54
5.6.310.0080.00414.15
5.6.300.0040.00814.24
5.6.290.0050.00514.38
5.6.280.0030.04117.78
5.6.270.0060.00314.41
5.6.260.0060.00614.70
5.6.250.0040.03317.41
5.6.240.0020.04817.55
5.6.230.0070.04617.41
5.6.220.0050.04517.42
5.6.210.0050.03717.38
5.6.200.0090.04117.60
5.6.190.0080.04017.62
5.6.180.0040.04417.79
5.6.170.0080.04717.66
5.6.160.0110.03717.60
5.6.150.0080.04117.66
5.6.140.0050.04017.73
5.6.130.0100.03217.88
5.6.120.0140.03717.67
5.6.110.0070.03817.64
5.6.100.0130.03317.71
5.6.90.0060.03117.56
5.6.80.0050.02517.11
5.6.70.0030.02717.48
5.6.60.0030.02517.52
5.6.50.0060.02117.17
5.6.40.0120.01517.28
5.6.30.0070.03317.33
5.6.20.0060.02717.26
5.6.10.0080.02017.22
5.6.00.0060.02317.33
5.5.380.0070.03515.79
5.5.370.0050.04515.76
5.5.360.0030.04515.78
5.5.350.0080.04215.91
5.5.340.0090.03016.04
5.5.330.0030.04615.97
5.5.320.0020.03316.07
5.5.310.0050.03516.13
5.5.300.0060.04415.90
5.5.290.0080.04116.18
5.5.280.0000.04415.97
5.5.270.0110.03416.01
5.5.260.0030.04416.16
5.5.250.0070.04515.97
5.5.240.0020.02615.63
5.5.230.0070.02215.59
5.5.220.0030.02515.80
5.5.210.0060.02115.59
5.5.200.0090.04315.60
5.5.190.0020.02515.78
5.5.180.0030.02815.68
5.5.170.0030.00711.29
5.5.160.0070.03015.70
5.5.150.0080.01615.50
5.5.140.0080.01815.62
5.5.130.0010.02615.80
5.5.120.0060.02615.63
5.5.110.0030.03515.72
5.5.100.0020.03515.56
5.5.90.0040.02015.59
5.5.80.0030.02415.72
5.5.70.0030.02515.64
5.5.60.0030.02215.63
5.5.50.0070.01815.52
5.5.40.0060.02215.73
5.5.30.0050.02215.74
5.5.20.0050.02215.63
5.5.10.0030.03015.67
5.5.00.0030.02815.50
5.4.450.0020.03515.09
5.4.440.0050.04015.34
5.4.430.0070.04215.27
5.4.420.0060.03415.41
5.4.410.0040.02915.19
5.4.400.0030.02515.16
5.4.390.0050.03015.17
5.4.380.0050.02015.16
5.4.370.0060.02015.11
5.4.360.0040.02615.02
5.4.350.0070.02415.10
5.4.340.0030.02215.07
5.4.330.0090.00311.13
5.4.320.0060.02014.93
5.4.310.0030.02115.15
5.4.300.0030.02215.18
5.4.290.0000.02615.11
5.4.280.0050.01715.15
5.4.270.0030.04515.04
5.4.260.0040.02015.23
5.4.250.0020.03114.95
5.4.240.0020.02315.10
5.4.230.0050.01815.12
5.4.220.0050.02215.10
5.4.210.0020.02415.04
5.4.200.0060.01915.07
5.4.190.0030.02115.09
5.4.180.0050.02015.06
5.4.170.0030.02315.04
5.4.160.0050.01815.11
5.4.150.0050.02215.10
5.4.140.0030.02313.83
5.4.130.0020.02213.60
5.4.120.0030.02213.84
5.4.110.0100.01613.74
5.4.100.0040.02113.83
5.4.90.0000.02413.85
5.4.80.0060.02013.81
5.4.70.0020.02213.80
5.4.60.0030.02213.81
5.4.50.0080.03513.83
5.4.40.0030.02013.82
5.4.30.0050.03713.79
5.4.20.0070.03713.72
5.4.10.0030.04413.83
5.4.00.0080.03013.39
5.3.290.0030.02512.91
5.3.280.0030.02512.86
5.3.270.0040.02212.88
5.3.260.0050.02012.80
5.3.250.0020.02512.87
5.3.240.0050.01712.86
5.3.230.0020.02312.78
5.3.220.0060.01312.86
5.3.210.0020.02712.80
5.3.200.0030.02212.79
5.3.190.0020.02412.78
5.3.180.0060.01812.86
5.3.170.0090.01312.75
5.3.160.0030.02812.79
5.3.150.0040.02712.75
5.3.140.0030.03212.79
5.3.130.0030.04212.77
5.3.120.0100.03412.81
5.3.110.0070.03712.75
5.3.100.0180.02812.58
5.3.90.0020.03712.58
5.3.80.0030.04112.55
5.3.70.0080.03212.47
5.3.60.0040.03812.51
5.3.50.0030.04012.53
5.3.40.0040.02712.51
5.3.30.0070.03512.50
5.3.20.0070.02312.37
5.3.10.0030.04012.30
5.3.00.0050.03812.34
5.2.170.0080.03211.08
5.2.160.0050.03211.09
5.2.150.0050.03311.09
5.2.140.0050.03111.14
5.2.130.0030.03511.09
5.2.120.0030.03511.09
5.2.110.0020.02011.06
5.2.100.0080.02611.11
5.2.90.0050.02010.99
5.2.80.0080.02511.00
5.2.70.0080.03011.10
5.2.60.0030.03211.08
5.2.50.0060.02811.03
5.2.40.0050.03211.04
5.2.30.0020.03611.06
5.2.20.0030.03610.96
5.2.10.0100.02810.95
5.2.00.0030.02810.90
5.1.60.0060.02810.43
5.1.50.0020.01710.53
5.1.40.0030.02710.42
5.1.30.0070.02410.63
5.1.20.0020.02010.71
5.1.10.0020.03010.58
5.1.00.0050.03010.54
5.0.50.0030.0259.80
5.0.40.0020.0189.71
5.0.30.0000.0219.66
5.0.20.0020.0209.64
5.0.10.0040.0229.63
5.0.00.0060.0159.59
4.4.90.0000.0229.38
4.4.80.0020.0209.38
4.4.70.0030.0109.38
4.4.60.0000.0179.38
4.4.50.0000.0149.38
4.4.40.0050.0159.38
4.4.30.0030.0209.38
4.4.20.0050.0169.38
4.4.10.0020.0209.38
4.4.00.0040.0229.38
4.3.110.0020.0229.38
4.3.100.0050.0179.38
4.3.90.0020.0209.38
4.3.80.0020.0259.38
4.3.70.0050.0159.38
4.3.60.0010.0169.38
4.3.50.0000.0229.38
4.3.40.0020.0209.38
4.3.30.0040.0159.38
4.3.20.0000.0219.38
4.3.10.0020.0199.38
4.3.00.0020.0139.38

preferences:
59.81 ms | 401 KiB | 5 Q