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); $offset = ord(chr($bits % 8)); $mask = (0xff >> $offset) << (8 - $offset); $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; string_shift_left("abc\x00", 3, 2, $output); for ($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)
8.3.70.0110.00416.38
8.3.60.0120.00618.18
8.3.50.0110.00821.93
8.3.40.0060.00918.82
8.3.30.0130.00319.07
8.3.20.0030.00620.09
8.3.10.0080.00021.71
8.3.00.0080.00022.21
8.2.180.0150.00716.61
8.2.170.0090.00622.96
8.2.160.0100.00320.43
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0090.00026.16
8.2.120.0030.00519.13
8.2.110.0030.00722.13
8.2.100.0090.00617.78
8.2.90.0070.00019.17
8.2.80.0000.00718.03
8.2.70.0030.00617.75
8.2.60.0050.00317.93
8.2.50.0050.00518.07
8.2.40.0070.00018.16
8.2.30.0100.00018.26
8.2.20.0000.00817.72
8.2.10.0000.00817.70
8.2.00.0040.00417.64
8.1.280.0100.01025.92
8.1.270.0060.00322.05
8.1.260.0080.00026.35
8.1.250.0030.00628.09
8.1.240.0000.00923.98
8.1.230.0110.00019.09
8.1.220.0040.00417.79
8.1.210.0030.00618.77
8.1.200.0090.00317.35
8.1.190.0030.00617.66
8.1.180.0030.00718.10
8.1.170.0030.00618.53
8.1.160.0000.00822.07
8.1.150.0040.00418.71
8.1.140.0070.00017.52
8.1.130.0030.00317.92
8.1.120.0070.00017.48
8.1.110.0050.00317.49
8.1.100.0080.00017.37
8.1.90.0040.00417.43
8.1.80.0070.00017.57
8.1.70.0030.00317.38
8.1.60.0040.00417.59
8.1.50.0040.00417.48
8.1.40.0000.00917.50
8.1.30.0030.00517.66
8.1.20.0000.00817.73
8.1.10.0000.00817.50
8.1.00.0000.00717.53
8.0.300.0040.00418.77
8.0.290.0030.00617.18
8.0.280.0040.00418.50
8.0.270.0070.00017.33
8.0.260.0030.00316.77
8.0.250.0030.00316.98
8.0.240.0000.00717.00
8.0.230.0000.00716.87
8.0.220.0040.00416.81
8.0.210.0000.00716.98
8.0.200.0060.00016.89
8.0.190.0000.00716.95
8.0.180.0030.00316.91
8.0.170.0000.00816.92
8.0.160.0000.00716.84
8.0.150.0040.00416.89
8.0.140.0030.00616.88
8.0.130.0060.00013.30
8.0.120.0000.00716.87
8.0.110.0050.00316.76
8.0.100.0000.00716.86
8.0.90.0030.00616.91
8.0.80.0050.01016.86
8.0.70.0030.00516.95
8.0.60.0070.00016.98
8.0.50.0050.00316.78
8.0.30.0120.00617.32
8.0.20.0140.00817.40
8.0.10.0000.00816.91
8.0.00.0140.00816.92
7.4.330.0060.00015.10
7.4.320.0030.00316.60
7.4.300.0030.00316.44
7.4.290.0050.00216.66
7.4.280.0000.00716.52
7.4.270.0030.00316.55
7.4.260.0030.00316.48
7.4.250.0040.00416.53
7.4.240.0000.00816.49
7.4.230.0080.00016.52
7.4.220.0080.01116.65
7.4.210.0060.01116.56
7.4.200.0000.00716.73
7.4.190.0070.00016.78
7.4.160.0100.00716.31
7.4.150.0060.01017.40
7.4.140.0070.01317.86
7.4.130.0110.00816.49
7.4.120.0110.00716.59
7.4.110.0100.00716.56
7.4.100.0120.00616.60
7.4.90.0100.00716.53
7.4.80.0090.00919.39
7.4.70.0000.01616.56
7.4.60.0090.00816.62
7.4.50.0060.00316.64
7.4.40.0080.00622.77
7.4.30.0080.00816.30
7.4.00.0030.01115.05
7.3.330.0000.00513.21
7.3.320.0030.00313.23
7.3.310.0000.00816.29
7.3.300.0040.00416.38
7.3.290.0090.01216.39
7.3.280.0100.00916.38
7.3.270.0140.00517.40
7.3.260.0140.00516.39
7.3.250.0100.01016.54
7.3.240.0110.00816.43
7.3.230.0060.01616.41
7.3.210.0090.00916.34
7.3.200.0130.01019.39
7.3.190.0130.00316.53
7.3.180.0070.00816.59
7.3.170.0030.01216.66
7.3.160.0000.01916.29
7.3.120.0120.00314.76
7.3.10.0000.01216.68
7.3.00.0040.00916.85
7.2.330.0110.00716.80
7.2.320.0030.01516.75
7.2.310.0150.00816.92
7.2.300.0070.01016.62
7.2.290.0100.01016.78
7.2.130.0110.00016.59
7.2.120.0000.01216.95
7.2.110.0030.01116.91
7.2.100.0080.00517.09
7.2.90.0060.00617.04
7.2.80.0060.00316.86
7.2.70.0060.00916.92
7.2.60.0090.00616.81
7.2.50.0050.00917.12
7.2.40.0090.00617.06
7.2.30.0110.00016.87
7.2.20.0040.00416.90
7.2.10.0000.01316.74
7.2.00.0020.00918.24
7.1.250.0060.00315.87
7.1.100.0060.00318.05
7.1.70.0050.00216.88
7.1.60.0090.01619.82
7.1.50.0130.01016.99
7.1.00.0000.08022.30
7.0.200.0090.00316.55
7.0.140.0070.07322.00
7.0.110.0070.07721.79
7.0.100.0130.06321.73
7.0.90.0070.07321.77
7.0.80.0100.08321.69
7.0.70.0070.08321.79
7.0.60.0070.08321.74
7.0.50.0070.08022.29
7.0.40.0100.06020.15
7.0.30.0130.07720.06
7.0.20.0130.07320.03
7.0.10.0200.06020.27
7.0.00.0130.05720.01
5.6.280.0030.07320.92
5.6.260.0070.08720.68
5.6.250.0130.07320.61
5.6.240.0030.07320.66
5.6.230.0130.07320.70
5.6.220.0170.07320.63
5.6.210.0100.08320.74
5.6.200.0100.08021.09
5.6.190.0070.06721.15
5.6.180.0030.07321.13
5.6.170.0170.07321.06
5.6.160.0130.07721.10
5.6.150.0070.08021.16
5.6.140.0170.07321.12
5.6.130.0000.06021.09
5.6.120.0100.08321.14
5.6.110.0100.08021.29
5.6.100.0100.08321.27
5.6.90.0030.09021.08
5.6.80.0200.07320.54
5.6.70.0130.06320.53
5.6.60.0000.08720.53
5.6.50.0070.07720.49
5.6.40.0230.06320.63
5.6.30.0130.07320.45
5.6.20.0100.07320.39
5.6.10.0100.07720.41
5.6.00.0030.08020.50
5.5.380.0070.08020.39
5.5.370.0070.08020.49
5.5.360.0070.08720.52
5.5.350.0100.08720.41
5.5.340.0030.09020.91
5.5.330.0030.08320.71
5.5.320.0130.04320.76
5.5.310.0030.08320.91
5.5.300.0130.07320.94
5.5.290.0130.08020.90
5.5.280.0000.07320.82
5.5.270.0100.08020.91
5.5.260.0130.07320.90
5.5.250.0100.04320.73
5.5.240.0100.06320.27
5.5.230.0100.08020.23
5.5.220.0000.08720.42
5.5.210.0030.08020.23
5.5.200.0070.08020.17
5.5.190.0130.07320.32
5.5.180.0030.05320.23
5.5.160.0100.07320.38
5.5.150.0000.08320.34
5.5.140.0000.08320.25
5.5.130.0070.07720.17
5.5.120.0030.05320.03
5.5.110.0100.07720.06
5.5.100.0030.07020.02
5.5.90.0070.04720.21
5.5.80.0070.07020.06
5.5.70.0030.08020.15
5.5.60.0000.05320.16
5.5.50.0100.07020.08
5.5.40.0030.08320.18
5.5.30.0070.07320.02
5.5.20.0100.07320.00
5.5.10.0030.06019.94
5.5.00.0000.05320.22
5.4.450.0130.06719.51
5.4.440.0070.07719.50
5.4.430.0130.07019.56
5.4.420.0000.07719.66
5.4.410.0200.06019.38
5.4.400.0030.07319.32
5.4.390.0070.04319.34
5.4.380.0030.07318.97
5.4.370.0070.07719.14
5.4.360.0100.07719.31
5.4.350.0030.07719.19
5.4.340.0100.07319.03
5.4.320.0070.08019.09
5.4.310.0100.04319.02
5.4.300.0170.06319.01
5.4.290.0070.06719.17
5.4.280.0170.06019.03
5.4.270.0030.08019.33
5.4.260.0030.08019.31
5.4.250.0070.07319.13
5.4.240.0070.07719.01
5.4.230.0030.07019.16
5.4.220.0030.08319.01
5.4.210.0070.07319.30
5.4.200.0070.06019.16
5.4.190.0070.04319.20
5.4.180.0000.07019.00
5.4.170.0100.06019.17
5.4.160.0070.05019.01
5.4.150.0030.08019.00
5.4.140.0070.04316.38
5.4.130.0030.06716.48
5.4.120.0030.07316.38
5.4.110.0070.04716.48
5.4.100.0100.06016.52
5.4.90.0070.06716.59
5.4.80.0100.06316.57
5.4.70.0100.05716.49
5.4.60.0030.08016.50
5.4.50.0070.07716.49
5.4.40.0070.04016.45
5.4.30.0030.07316.43
5.4.20.0100.07016.33
5.4.10.0100.04016.43
5.4.00.0100.06715.79
5.3.290.0070.07714.77
5.3.280.0070.07714.66
5.3.270.0070.07714.76
5.3.260.0030.04014.63
5.3.250.0030.05714.62
5.3.240.0030.07714.59
5.3.230.0070.06314.60
5.3.220.0130.07014.57
5.3.210.0070.07714.58
5.3.200.0070.06714.58
5.3.190.0070.07314.80
5.3.180.0100.07014.82
5.3.170.0170.03314.66
5.3.160.0170.07014.43
5.3.150.0070.07714.65
5.3.140.0100.06314.71
5.3.130.0200.03314.59
5.3.120.0100.07014.57
5.3.110.0070.07714.57
5.3.100.0030.07714.19
5.3.90.0130.06314.00
5.3.80.0100.06714.06
5.3.70.0100.07014.06
5.3.60.0170.06314.04
5.3.50.0000.05014.00
5.3.40.0100.07313.97
5.3.30.0070.07713.78
5.3.20.0070.07313.69
5.3.10.0070.07013.89
5.3.00.0030.06713.66
5.2.170.0100.05711.59
5.2.160.0100.05711.59
5.2.150.0070.05711.59
5.2.140.0030.04011.59
5.2.130.0030.06311.59
5.2.120.0030.06311.59
5.2.110.0030.06311.59
5.2.100.0100.06011.59
5.2.90.0030.04311.59
5.2.80.0030.06311.59
5.2.70.0100.06311.59
5.2.60.0000.04011.59
5.2.50.0070.06011.59
5.2.40.0070.06311.59
5.2.30.0030.06311.59
5.2.20.0030.06011.59
5.2.10.0070.04711.59
5.2.00.0100.05711.59
5.1.60.0070.04011.59
5.1.50.0030.05011.59
5.1.40.0030.04311.59
5.1.30.0030.06011.59
5.1.20.0030.06011.59
5.1.10.0070.04711.59
5.1.00.0070.05311.59
5.0.50.0000.04711.59
5.0.40.0070.03711.59
5.0.30.0000.06711.59
5.0.20.0030.04311.59
5.0.10.0030.03711.59
5.0.00.0000.04311.59
4.4.90.0030.01711.59
4.4.80.0070.02011.59
4.4.70.0070.03311.59
4.4.60.0130.02311.59
4.4.50.0000.03711.59
4.4.40.0070.02711.59
4.4.30.0000.03711.59
4.4.20.0000.03311.59
4.4.10.0000.03711.59
4.4.00.0070.04311.59
4.3.110.0070.03011.59
4.3.100.0000.03711.59
4.3.90.0030.03011.59
4.3.80.0030.04311.59
4.3.70.0070.02711.59
4.3.60.0030.02311.59
4.3.50.0070.02311.59
4.3.40.0000.05711.59
4.3.30.0000.03711.59
4.3.20.0030.01311.59
4.3.10.0030.01711.59
4.3.00.0000.03711.59

preferences:
43.1 ms | 401 KiB | 5 Q