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, 2, $output); for ($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)
8.3.40.0120.00318.85
8.3.30.0070.00718.75
8.3.20.0080.00018.77
8.3.10.0040.00418.73
8.3.00.0030.00519.38
8.2.170.0100.01018.96
8.2.160.0110.00322.96
8.2.150.0100.00325.66
8.2.140.0050.00324.66
8.2.130.0030.00726.16
8.2.120.0040.00420.94
8.2.110.0030.00722.29
8.2.100.0060.00618.16
8.2.90.0050.00319.27
8.2.80.0030.00517.97
8.2.70.0040.00417.63
8.2.60.0050.00317.93
8.2.50.0090.00018.16
8.2.40.0000.00819.35
8.2.30.0030.00617.84
8.2.20.0030.00617.60
8.2.10.0030.00517.65
8.2.00.0070.00017.65
8.1.270.0040.00423.99
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0040.00723.88
8.1.230.0100.00317.70
8.1.220.0050.00317.91
8.1.210.0060.00318.77
8.1.200.0000.00817.35
8.1.190.0080.00017.35
8.1.180.0050.00318.82
8.1.170.0050.00317.62
8.1.160.0040.00419.08
8.1.150.0040.00418.67
8.1.140.0040.00417.48
8.1.130.0040.00419.15
8.1.120.0000.00717.47
8.1.110.0080.00017.44
8.1.100.0040.00417.51
8.1.90.0030.00617.54
8.1.80.0000.00817.53
8.1.70.0000.01017.39
8.1.60.0040.00417.59
8.1.50.0000.00717.37
8.1.40.0080.00017.51
8.1.30.0050.00417.65
8.1.20.0050.00317.68
8.1.10.0000.00717.58
8.1.00.0070.00017.58
8.0.300.0040.00418.77
8.0.290.0030.00516.75
8.0.280.0000.00718.59
8.0.270.0070.00017.28
8.0.260.0000.00716.93
8.0.250.0100.00016.87
8.0.240.0070.00016.96
8.0.230.0000.00917.00
8.0.220.0080.00016.91
8.0.210.0050.00216.94
8.0.200.0000.01016.92
8.0.190.0040.00416.99
8.0.180.0030.00916.91
8.0.170.0050.00316.90
8.0.160.0070.00016.83
8.0.150.0000.00816.89
8.0.140.0000.00816.92
8.0.130.0030.00313.35
8.0.120.0040.00416.93
8.0.110.0040.00416.78
8.0.100.0000.00716.89
8.0.90.0020.00516.74
8.0.80.0110.00416.97
8.0.70.0000.00716.88
8.0.60.0040.00416.72
8.0.50.0050.00316.95
8.0.30.0100.00716.91
8.0.20.0100.01217.21
8.0.10.0040.00416.87
8.0.00.0100.01016.81
7.4.330.0000.00613.03
7.4.320.0000.00616.52
7.4.300.0030.00316.66
7.4.290.0000.00716.54
7.4.280.0030.00516.52
7.4.270.0070.00016.62
7.4.260.0000.00513.36
7.4.250.0050.00316.56
7.4.240.0070.00016.38
7.4.230.0030.00316.35
7.4.220.0090.00916.58
7.4.210.0120.00816.56
7.4.200.0040.00416.54
7.4.190.0030.00516.50
7.4.160.0050.01016.45
7.4.150.0100.01616.70
7.4.140.0160.00617.86
7.4.130.0090.01516.47
7.4.120.0050.01116.62
7.4.110.0040.01516.71
7.4.100.0050.01316.40
7.4.90.0060.01416.41
7.4.80.0040.01319.39
7.4.70.0080.01316.54
7.4.60.0110.01116.36
7.4.50.0030.00616.39
7.4.40.0110.00616.63
7.4.30.0090.00916.52
7.4.10.0040.01415.13
7.4.00.0030.01314.89
7.3.330.0030.00313.21
7.3.320.0030.00313.32
7.3.310.0070.00016.40
7.3.300.0000.00716.38
7.3.290.0080.00816.37
7.3.280.0070.00716.36
7.3.270.0060.01116.73
7.3.260.0160.00616.54
7.3.240.0080.00816.38
7.3.230.0030.01316.39
7.3.210.0040.01416.49
7.3.200.0070.01016.36
7.3.190.0030.01316.54
7.3.180.0090.01516.37
7.3.170.0110.00716.41
7.3.160.0130.00316.34
7.3.130.0050.01014.54
7.3.120.0050.01214.97
7.3.110.0050.01014.83
7.3.100.0030.01014.71
7.3.90.0100.00314.94
7.3.80.0060.00714.82
7.3.70.0060.00614.91
7.3.60.0070.00714.85
7.3.50.0040.01114.91
7.3.40.0080.00714.97
7.3.30.0100.00514.69
7.3.20.0080.00716.43
7.3.10.0050.01016.70
7.3.00.0050.00616.54
7.2.330.0030.01516.54
7.2.320.0150.00316.68
7.2.310.0120.00916.72
7.2.300.0040.01416.91
7.2.290.0110.00716.61
7.2.260.0070.01015.38
7.2.250.0060.01215.21
7.2.240.0030.01014.87
7.2.230.0080.00815.19
7.2.220.0050.00814.94
7.2.210.0060.00815.34
7.2.200.0040.01215.05
7.2.190.0050.00715.13
7.2.180.0040.01115.00
7.2.170.0050.01014.84
7.2.160.0050.00714.92
7.2.150.0050.00817.04
7.2.140.0030.01117.01
7.2.130.0100.00416.92
7.2.120.0030.01316.80
7.2.110.0050.00816.95
7.2.100.0090.00516.74
7.2.90.0050.00816.87
7.2.80.0110.00516.87
7.2.70.0110.00716.91
7.2.60.0080.00616.93
7.2.50.0090.00416.94
7.2.40.0110.00516.99
7.2.30.0050.00616.79
7.2.20.0050.00816.85
7.2.10.0050.00916.99
7.2.00.0040.01017.70
7.1.330.0030.01115.81
7.1.320.0050.01015.58
7.1.310.0070.00815.88
7.1.300.0070.00815.68
7.1.290.0050.01015.91
7.1.280.0050.01115.86
7.1.270.0130.00315.76
7.1.260.0050.01015.88
7.1.250.0060.00615.90
7.1.240.0060.00315.86
7.1.230.0060.00615.56
7.1.220.0040.00815.93
7.1.210.0000.01715.61
7.1.200.0060.00615.76
7.1.190.0030.01015.84
7.1.180.0060.00916.04
7.1.170.0030.01015.96
7.1.160.0060.00615.93
7.1.150.0070.00715.77
7.1.140.0000.01115.75
7.1.130.0080.00415.93
7.1.120.0090.00315.65
7.1.110.0060.00615.61
7.1.100.0070.00716.00
7.1.90.0090.00015.70
7.1.80.0030.00615.85
7.1.70.0030.00516.47
7.1.60.0060.01117.42
7.1.50.0080.01016.56
7.1.40.0000.00815.79
7.1.30.0030.01015.67
7.1.20.0000.01015.69
7.1.10.0050.00515.86
7.1.00.0050.03719.05
7.0.330.0070.00715.14
7.0.320.0040.00415.23
7.0.310.0030.01015.46
7.0.300.0060.00615.27
7.0.290.0000.01115.64
7.0.280.0000.01115.64
7.0.270.0040.01115.55
7.0.260.0040.00715.23
7.0.250.0000.01215.56
7.0.240.0030.00915.23
7.0.230.0000.01115.39
7.0.220.0100.00315.60
7.0.210.0000.01115.45
7.0.200.0040.00616.13
7.0.190.0030.00615.24
7.0.180.0000.00915.31
7.0.170.0000.01215.38
7.0.160.0040.01115.60
7.0.150.0070.00315.55
7.0.140.0030.04118.81
7.0.130.0090.00015.53
7.0.120.0000.04018.69
7.0.110.0120.04217.75
7.0.100.0070.04517.69
7.0.90.0120.01817.71
7.0.80.0080.02817.55
7.0.70.0240.03617.66
7.0.60.0020.02517.79
7.0.50.0100.02017.83
7.0.40.0020.03716.61
7.0.30.0080.02216.53
7.0.20.0080.02016.67
7.0.10.0000.04216.60
7.0.00.0050.02516.54
5.6.400.0060.00314.64
5.6.390.0030.00614.66
5.6.380.0050.00314.83
5.6.370.0060.00914.39
5.6.360.0070.00414.68
5.6.350.0080.00314.48
5.6.340.0030.01214.47
5.6.330.0000.01514.71
5.6.320.0000.01014.50
5.6.310.0000.01014.16
5.6.300.0000.00814.59
5.6.290.0070.00714.30
5.6.280.0070.03717.73
5.6.270.0030.00814.45
5.6.260.0120.04317.58
5.6.250.0050.04317.48
5.6.240.0070.02517.47
5.6.230.0070.02717.58
5.6.220.0050.02417.40
5.6.210.0070.02117.51
5.6.200.0000.02817.47
5.6.190.0030.04317.57
5.6.180.0070.02917.64
5.6.170.0080.02517.52
5.6.160.0030.04017.51
5.6.150.0050.03017.45
5.6.140.0050.02317.50
5.6.130.0050.04317.72
5.6.120.0040.02417.49
5.6.110.0040.02517.56
5.6.100.0040.02917.47
5.6.90.0000.02917.47
5.6.80.0020.02517.13
5.6.70.0050.02217.04
5.6.60.0030.03217.12
5.6.50.0070.03017.38
5.6.40.0040.02417.28
5.6.30.0070.02317.15
5.6.20.0080.04216.98
5.6.10.0070.04017.17
5.6.00.0050.03417.09
5.5.380.0050.02517.32
5.5.370.0080.02517.54
5.5.360.0030.02917.36
5.5.350.0020.02717.27
5.5.340.0020.03417.56
5.5.330.0030.02717.55
5.5.320.0050.02517.59
5.5.310.0090.02017.59
5.5.300.0080.03717.76
5.5.290.0020.04817.44
5.5.280.0060.02217.45
5.5.270.0050.04017.55
5.5.260.0020.02817.64
5.5.250.0050.04217.52
5.5.240.0050.04617.35
5.5.230.0080.02017.23
5.5.220.0030.02317.29
5.5.210.0050.03017.20
5.5.200.0050.02517.32
5.5.190.0100.04017.28
5.5.180.0070.04517.34
5.5.170.0100.00714.43
5.5.160.0080.03817.36
5.5.150.0070.04317.26
5.5.140.0060.04317.33
5.5.130.0130.03517.07
5.5.120.0070.03417.22
5.5.110.0050.04117.31
5.5.100.0100.04017.28
5.5.90.0100.03717.26
5.5.80.0130.02717.01
5.5.70.0060.03117.17
5.5.60.0050.04117.32
5.5.50.0050.03517.31
5.5.40.0040.04417.32
5.5.30.0050.04517.03
5.5.20.0070.04017.28
5.5.10.0080.04417.08
5.5.00.0110.02017.22
5.4.450.0010.03816.13
5.4.440.0070.04016.04
5.4.430.0060.02815.97
5.4.420.0070.04116.13
5.4.410.0030.02115.90
5.4.400.0020.02215.97
5.4.390.0050.02015.90
5.4.380.0020.02515.80
5.4.370.0070.03115.89
5.4.360.0030.03815.80
5.4.350.0070.01815.89
5.4.340.0050.04415.89
5.4.330.0030.00612.60
5.4.320.0030.02415.80
5.4.310.0160.03015.89
5.4.300.0050.04115.81
5.4.290.0070.04015.97
5.4.280.0120.03215.79
5.4.270.0050.03915.78
5.4.260.0100.03815.92
5.4.250.0060.03815.95
5.4.240.0130.03315.77
5.4.230.0030.04315.88
5.4.220.0050.04415.79
5.4.210.0080.02215.81
5.4.200.0030.04215.89
5.4.190.0030.04415.81
5.4.180.0030.03215.86
5.4.170.0020.04315.77
5.4.160.0020.04315.79
5.4.150.0030.04515.90
5.4.140.0100.03514.48
5.4.130.0050.04014.46
5.4.120.0080.03714.56
5.4.110.0040.03014.51
5.4.100.0050.04014.54
5.4.90.0080.03814.63
5.4.80.0030.03214.62
5.4.70.0070.03714.54
5.4.60.0020.04014.60
5.4.50.0070.02514.56
5.4.40.0050.04014.56
5.4.30.0060.02714.49
5.4.20.0060.04114.57
5.4.10.0070.03814.53
5.4.00.0030.04014.25
5.3.290.0100.03513.75
5.3.280.0070.03713.65
5.3.270.0050.04213.65
5.3.260.0080.03513.72
5.3.250.0020.02813.65
5.3.240.0030.04313.65
5.3.230.0080.04013.67
5.3.220.0080.03713.65
5.3.210.0050.03313.65
5.3.200.0050.04113.65
5.3.190.0080.03813.65
5.3.180.0080.03513.66
5.3.170.0050.04013.65
5.3.160.0100.03513.65
5.3.150.0000.04313.70
5.3.140.0060.02313.65
5.3.130.0080.03713.65
5.3.120.0070.03813.65
5.3.110.0030.04113.65
5.3.100.0080.03613.65
5.3.90.0050.04013.65
5.3.80.0060.04013.65
5.3.70.0000.04413.65
5.3.60.0060.04013.65
5.3.50.0040.03213.65
5.3.40.0080.03813.65
5.3.30.0090.03513.65
5.3.20.0090.03313.65
5.3.10.0050.03713.65
5.3.00.0070.03513.65
5.2.170.0070.05314.70
5.2.160.0030.06014.70
5.2.150.0100.05314.70
5.2.140.0000.07014.70
5.2.130.0130.05314.70
5.2.120.0000.06014.70
5.2.110.0100.05314.70
5.2.100.0030.06714.70
5.2.90.0070.05714.70
5.2.80.0070.06014.70
5.2.70.0030.03714.70
5.2.60.0100.05014.70
5.2.50.0030.06714.70
5.2.40.0030.06314.70
5.2.30.0100.05314.70
5.2.20.0100.05314.70
5.2.10.0100.05714.70
5.2.00.0030.06314.70
5.1.60.0030.05314.70
5.1.50.0030.05714.70
5.1.40.0100.04314.70
5.1.30.0070.05314.70
5.1.20.0000.04314.70
5.1.10.0170.04314.70
5.1.00.0130.04714.70
5.0.50.0070.04014.70
5.0.40.0070.04314.70
5.0.30.0030.06314.70
5.0.20.0030.03014.70
5.0.10.0030.03314.70
5.0.00.0000.05014.70
4.4.90.0000.03714.70
4.4.80.0000.03714.70
4.4.70.0030.03314.70
4.4.60.0000.04014.70
4.4.50.0000.03714.70
4.4.40.0030.05314.70
4.4.30.0000.03014.70
4.4.20.0030.03714.70
4.4.10.0100.03014.70
4.4.00.0030.05714.70
4.3.110.0000.03714.70
4.3.100.0070.02314.70
4.3.90.0030.03014.70
4.3.80.0000.05314.70
4.3.70.0030.03314.70
4.3.60.0030.03314.70
4.3.50.0030.02714.70
4.3.40.0130.04014.70
4.3.30.0030.03314.70
4.3.20.0030.03314.70
4.3.10.0000.04014.70
4.3.00.0000.03714.70

preferences:
44.56 ms | 400 KiB | 5 Q