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("\n%02x ", $left | $right); $output[$i] = chr($left | $right); } } //0b000100010001000100000000; string_shift_left("abc\x00", 3, 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)
8.3.60.0140.00718.43
8.3.50.0090.00721.96
8.3.40.0090.00618.89
8.3.30.0110.00419.17
8.3.20.0080.00020.21
8.3.10.0040.00422.04
8.3.00.0040.00422.30
8.2.180.0110.01116.50
8.2.170.0070.01022.96
8.2.160.0110.00419.16
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00417.63
8.2.110.0090.00020.47
8.2.100.0070.00417.91
8.2.90.0000.00819.22
8.2.80.0080.00017.97
8.2.70.0030.00517.50
8.2.60.0060.00318.05
8.2.50.0030.00618.07
8.2.40.0050.00318.22
8.2.30.0060.00318.16
8.2.20.0080.00017.75
8.2.10.0060.00317.84
8.2.00.0000.00717.83
8.1.280.0100.01025.92
8.1.270.0050.00322.01
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0130.00021.96
8.1.230.0120.00022.82
8.1.220.0040.00417.77
8.1.210.0030.00618.77
8.1.200.0060.00316.98
8.1.190.0040.00417.63
8.1.180.0050.00318.10
8.1.170.0000.00818.46
8.1.160.0040.00422.04
8.1.150.0040.00418.69
8.1.140.0030.00517.34
8.1.130.0030.00517.92
8.1.120.0040.00417.55
8.1.110.0040.00417.46
8.1.100.0000.00717.38
8.1.90.0030.00317.46
8.1.80.0050.00217.46
8.1.70.0000.00717.48
8.1.60.0030.00617.64
8.1.50.0080.00017.52
8.1.40.0030.00617.46
8.1.30.0040.00417.75
8.1.20.0040.00417.70
8.1.10.0040.00417.58
8.1.00.0000.00817.52
8.0.300.0040.00418.77
8.0.290.0040.00417.30
8.0.280.0040.00418.57
8.0.270.0030.00317.33
8.0.260.0000.00616.83
8.0.250.0030.00316.86
8.0.240.0050.00216.89
8.0.230.0030.00316.98
8.0.220.0000.00816.79
8.0.210.0030.00316.93
8.0.200.0000.00716.91
8.0.190.0070.00016.95
8.0.180.0050.00217.00
8.0.170.0040.00416.92
8.0.160.0040.00416.86
8.0.150.0040.00416.79
8.0.140.0000.00816.93
8.0.130.0000.00513.35
8.0.120.0000.00816.88
8.0.110.0070.00016.75
8.0.100.0040.00416.95
8.0.90.0030.00516.77
8.0.80.0040.01116.92
8.0.70.0000.00717.04
8.0.60.0080.00016.95
8.0.50.0050.00316.79
8.0.30.0110.00717.19
8.0.20.0060.01217.40
8.0.10.0000.00817.11
8.0.00.0090.00916.74
7.4.330.0000.00715.00
7.4.320.0030.00316.45
7.4.300.0000.00716.67
7.4.290.0030.00316.63
7.4.280.0000.00716.53
7.4.270.0030.00316.67
7.4.260.0000.00816.60
7.4.250.0040.00416.38
7.4.240.0000.00816.57
7.4.230.0000.00716.55
7.4.220.0080.00916.49
7.4.210.0060.00916.62
7.4.200.0000.00716.60
7.4.190.0030.00316.52
7.4.160.0120.01216.49
7.4.150.0060.01617.40
7.4.140.0080.01017.86
7.4.130.0080.01216.44
7.4.120.0150.00316.58
7.4.110.0100.00616.47
7.4.100.0110.00516.64
7.4.90.0080.00816.56
7.4.80.0140.00319.39
7.4.70.0080.00816.57
7.4.60.0070.01016.64
7.4.50.0030.00616.34
7.4.40.0110.00722.77
7.4.30.0100.00716.48
7.4.00.0080.00815.03
7.3.330.0050.00013.30
7.3.320.0050.00013.33
7.3.310.0040.00316.37
7.3.300.0000.00716.37
7.3.290.0070.00716.30
7.3.280.0090.00716.42
7.3.270.0070.01317.40
7.3.260.0040.01316.46
7.3.250.0090.01316.65
7.3.240.0110.00716.46
7.3.230.0100.01616.42
7.3.210.0130.00716.57
7.3.200.0110.00719.39
7.3.190.0030.01416.46
7.3.180.0110.01116.69
7.3.170.0120.00316.38
7.3.160.0090.00616.33
7.3.120.0080.00714.97
7.3.110.0070.01114.53
7.3.100.0070.01115.13
7.3.90.0060.00914.65
7.3.80.0000.01914.85
7.3.70.0090.00915.05
7.3.60.0040.01114.87
7.3.50.0080.00815.06
7.3.40.0090.00314.88
7.3.30.0090.00614.63
7.3.20.0150.00316.69
7.3.10.0090.00416.71
7.3.00.0090.00616.40
7.2.330.0120.00616.66
7.2.320.0030.01616.80
7.2.310.0150.00616.59
7.2.300.0140.00316.78
7.2.290.0130.00516.88
7.2.250.0090.00915.13
7.2.240.0110.00414.74
7.2.230.0040.01215.28
7.2.220.0040.01414.98
7.2.210.0070.01015.08
7.2.200.0060.01215.05
7.2.190.0030.01014.82
7.2.180.0000.01315.29
7.2.170.0030.01614.96
7.2.00.0000.01319.30
7.1.330.0060.01015.83
7.1.320.0030.01015.91
7.1.310.0040.01415.60
7.1.300.0030.01015.93
7.1.290.0130.00615.52
7.1.280.0030.01315.77
7.1.270.0130.00315.89
7.1.260.0040.00815.83
7.1.200.0060.00915.68
7.1.100.0040.00418.32
7.1.70.0000.00917.16
7.1.60.0180.00619.82
7.1.50.0070.01416.93
7.1.00.0070.07322.28
7.0.200.0190.00016.46
7.0.140.0000.07722.16
7.0.100.0370.07720.04
7.0.90.0130.07319.97
7.0.80.0070.04719.95
7.0.70.0130.09020.15
7.0.60.0170.08019.92
7.0.50.0100.05720.42
7.0.40.0000.06020.14
7.0.30.0030.08720.11
7.0.20.0070.08020.00
7.0.10.0130.08020.14
7.0.00.0030.05020.14
5.6.280.0100.06720.79
5.6.250.0070.04320.63
5.6.240.0070.08020.62
5.6.230.0130.07720.63
5.6.220.0100.07320.71
5.6.210.0100.08720.66
5.6.200.0070.04720.94
5.6.190.0070.04020.95
5.6.180.0100.08021.06
5.6.170.0170.07021.06
5.6.160.0030.06021.15
5.6.150.0070.04720.96
5.6.140.0000.07721.00
5.6.130.0070.08721.09
5.6.120.0070.07321.07
5.6.110.0130.07021.11
5.6.100.0130.08321.05
5.6.90.0100.05021.01
5.6.80.0130.07320.48
5.6.70.0030.05320.51
5.6.60.0070.06720.50
5.6.50.0070.07020.41
5.6.40.0000.07720.48
5.6.30.0070.06720.45
5.6.20.0070.04720.48
5.6.10.0070.04720.54
5.6.00.0030.07720.31
5.5.380.0030.07720.46
5.5.370.0170.07320.37
5.5.360.0100.08720.36
5.5.350.0100.07320.48
5.5.340.0200.07020.88
5.5.330.0070.05020.80
5.5.320.0070.08020.84
5.5.310.0030.04720.93
5.5.300.0070.05020.90
5.5.290.0030.06020.95
5.5.280.0000.07720.93
5.5.270.0030.04720.88
5.5.260.0130.07320.87
5.5.250.0070.07020.68
5.5.240.0130.04320.25
5.5.230.0070.07320.19
5.5.220.0100.06320.30
5.5.210.0070.07720.28
5.5.200.0070.07720.11
5.5.190.0100.04020.24
5.5.180.0070.06720.27
5.5.160.0000.06020.05
5.5.150.0000.07320.00
5.5.140.0070.05320.00
5.5.130.0030.08020.14
5.5.120.0070.06720.16
5.5.110.0100.06720.09
5.5.100.0100.07320.11
5.5.90.0030.06319.96
5.5.80.0000.08320.02
5.5.70.0030.08020.14
5.5.60.0070.05720.11
5.5.50.0030.05720.10
5.5.40.0000.08720.07
5.5.30.0100.07320.13
5.5.20.0030.08020.08
5.5.10.0130.05020.12
5.5.00.0130.04320.05
5.4.450.0030.05019.51
5.4.440.0100.07019.28
5.4.430.0170.07019.50
5.4.420.0030.06319.37
5.4.410.0070.03719.10
5.4.400.0070.06719.21
5.4.390.0070.06319.03
5.4.380.0030.07719.24
5.4.370.0070.07318.91
5.4.360.0130.03718.97
5.4.350.0200.06019.14
5.4.340.0070.06719.18
5.4.320.0000.04319.19
5.4.310.0070.07019.12
5.4.300.0000.04719.20
5.4.290.0100.03719.23
5.4.280.0100.05019.23
5.4.270.0070.04319.16
5.4.260.0070.03719.16
5.4.250.0130.06019.05
5.4.240.0130.07319.25
5.4.230.0030.04018.87
5.4.220.0100.07319.11
5.4.210.0030.04719.04
5.4.200.0130.06018.88
5.4.190.0070.05019.08
5.4.180.0070.04319.04
5.4.170.0100.03319.02
5.4.160.0100.08018.93
5.4.150.0130.07019.16
5.4.140.0070.03716.45
5.4.130.0100.07016.43
5.4.120.0100.06716.36
5.4.110.0030.06016.48
5.4.100.0030.04016.48
5.4.90.0000.05016.45
5.4.80.0000.04716.32
5.4.70.0070.07316.33
5.4.60.0030.04016.41
5.4.50.0030.07316.31
5.4.40.0030.06716.37
5.4.30.0100.07016.34
5.4.20.0070.07316.41
5.4.10.0000.04716.48
5.4.00.0100.06715.87
5.3.290.0070.07314.67
5.3.280.0030.04014.73
5.3.270.0070.07314.74
5.3.260.0070.05014.61
5.3.250.0100.04714.63
5.3.240.0030.06314.68
5.3.230.0030.04714.74
5.3.220.0030.05714.63
5.3.210.0100.03314.61
5.3.200.0000.06014.56
5.3.190.0030.03714.56
5.3.180.0100.04314.67
5.3.170.0070.04314.58
5.3.160.0170.05314.55
5.3.150.0070.07014.50
5.3.140.0030.07014.69
5.3.130.0070.07714.54
5.3.120.0030.05314.68
5.3.110.0070.07714.48
5.3.100.0100.07014.04
5.3.90.0100.07014.11
5.3.80.0070.05014.09
5.3.70.0100.07314.06
5.3.60.0030.06713.93
5.3.50.0000.04013.88
5.3.40.0070.03713.95
5.3.30.0070.07713.98
5.3.20.0070.07013.85
5.3.10.0070.04013.72
5.3.00.0070.07713.57
5.2.170.0030.05311.22
5.2.160.0100.04311.04
5.2.150.0000.06711.07
5.2.140.0100.05311.09
5.2.130.0100.03711.18
5.2.120.0030.04711.03
5.2.110.0030.06011.11
5.2.100.0070.05711.12
5.2.90.0000.03711.12
5.2.80.0070.05711.16
5.2.70.0100.03010.97
5.2.60.0000.06311.13
5.2.50.0030.06310.99
5.2.40.0030.03711.11
5.2.30.0070.06011.12
5.2.20.0100.05011.03
5.2.10.0100.02311.01
5.2.00.0000.03310.76
5.1.60.0000.03310.07
5.1.50.0070.02710.02
5.1.40.0030.0539.84
5.1.30.0070.02710.38
5.1.20.0100.04310.36
5.1.10.0070.02010.08
5.1.00.0070.0709.97
5.0.50.0030.0378.54
5.0.40.0100.0178.34
5.0.30.0000.0408.34
5.0.20.0000.0408.34
5.0.10.0030.0338.34
5.0.00.0030.0608.34
4.4.90.0070.0338.34
4.4.80.0030.0338.34
4.4.70.0000.0378.34
4.4.60.0000.0338.34
4.4.50.0000.0338.34
4.4.40.0000.0438.34
4.4.30.0000.0208.34
4.4.20.0030.0178.34
4.4.10.0030.0338.34
4.4.00.0000.0578.34
4.3.110.0000.0338.34
4.3.100.0030.0178.34
4.3.90.0000.0378.34
4.3.80.0000.0478.34
4.3.70.0030.0338.34
4.3.60.0030.0278.34
4.3.50.0000.0378.34
4.3.40.0030.0538.34
4.3.30.0000.0408.34
4.3.20.0000.0378.34
4.3.10.0000.0378.34
4.3.00.0000.0238.34

preferences:
36.23 ms | 401 KiB | 5 Q