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("%02x ", $left | $right); $output[$i] = chr($left | $right); } } //0b000100010001000100000000; string_shift_left("abc\x00", 3, 2, $output); for ($i = 0; $i < strlen($output); $i++) { printf("\n%08b|", ord($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)
8.3.70.0120.00618.27
8.3.60.0070.00718.43
8.3.50.0140.00122.06
8.3.40.0090.00618.79
8.3.30.0060.00919.04
8.3.20.0040.00420.29
8.3.10.0030.00522.13
8.3.00.0060.00322.36
8.2.180.0140.00416.50
8.2.170.0070.00722.96
8.2.160.0070.00719.38
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0080.00026.16
8.2.120.0040.00417.50
8.2.110.0050.00522.12
8.2.100.0040.00717.91
8.2.90.0030.00619.17
8.2.80.0040.00418.05
8.2.70.0060.00317.48
8.2.60.0100.00017.80
8.2.50.0040.00418.07
8.2.40.0040.00418.16
8.2.30.0050.00518.15
8.2.20.0050.00217.62
8.2.10.0000.00817.76
8.2.00.0060.00317.66
8.1.280.0100.00725.92
8.1.270.0040.00422.14
8.1.260.0040.00426.35
8.1.250.0030.00528.09
8.1.240.0090.00023.71
8.1.230.0100.00319.05
8.1.220.0030.00517.77
8.1.210.0000.00818.77
8.1.200.0060.00317.35
8.1.190.0000.00817.30
8.1.180.0000.00918.10
8.1.170.0000.00818.46
8.1.160.0050.00221.95
8.1.150.0040.00418.59
8.1.140.0000.00717.48
8.1.130.0000.00717.84
8.1.120.0000.00717.55
8.1.110.0000.00717.49
8.1.100.0000.00717.44
8.1.90.0040.00417.51
8.1.80.0070.00017.40
8.1.70.0030.00317.43
8.1.60.0000.00817.56
8.1.50.0000.00817.60
8.1.40.0000.00817.52
8.1.30.0040.00417.55
8.1.20.0090.00017.61
8.1.10.0040.00417.54
8.1.00.0050.00217.42
8.0.300.0040.00418.77
8.0.290.0070.00017.05
8.0.280.0000.00718.52
8.0.270.0040.00417.34
8.0.260.0000.00716.89
8.0.250.0030.00317.00
8.0.240.0020.00517.00
8.0.230.0000.00717.03
8.0.220.0080.00016.90
8.0.210.0030.00316.80
8.0.200.0000.00616.98
8.0.190.0070.00016.95
8.0.180.0000.00716.95
8.0.170.0030.00616.88
8.0.160.0080.00016.76
8.0.150.0030.00316.85
8.0.140.0070.00016.83
8.0.130.0050.00013.34
8.0.120.0030.00516.86
8.0.110.0040.00416.87
8.0.100.0000.00716.82
8.0.90.0050.00216.89
8.0.80.0060.00916.92
8.0.70.0040.00416.79
8.0.60.0040.00416.94
8.0.50.0040.00416.76
8.0.30.0150.00617.09
8.0.20.0090.00917.43
8.0.10.0080.00017.07
8.0.00.0080.01116.77
7.4.330.0070.00015.00
7.4.320.0030.00316.51
7.4.300.0000.00716.54
7.4.290.0000.00716.63
7.4.280.0000.00716.38
7.4.270.0070.00016.62
7.4.260.0080.00016.52
7.4.250.0040.00416.60
7.4.240.0000.00716.52
7.4.230.0070.00016.41
7.4.220.0030.01416.55
7.4.210.0080.00916.57
7.4.200.0070.00016.34
7.4.190.0070.00016.48
7.4.160.0050.01116.70
7.4.150.0070.01217.40
7.4.140.0100.01117.86
7.4.130.0070.01016.48
7.4.120.0080.00816.59
7.4.110.0100.00716.71
7.4.100.0070.01016.48
7.4.90.0110.00616.41
7.4.80.0100.00719.39
7.4.70.0040.01416.59
7.4.60.0060.01216.46
7.4.50.0040.00416.30
7.4.40.0100.00722.77
7.4.30.0120.00316.52
7.4.00.0070.00915.13
7.3.330.0020.00213.41
7.3.320.0050.00013.19
7.3.310.0040.00416.42
7.3.300.0000.00716.42
7.3.290.0060.00916.38
7.3.280.0100.00716.36
7.3.270.0080.00817.40
7.3.260.0120.00416.69
7.3.250.0120.00616.53
7.3.240.0100.00716.43
7.3.230.0100.01316.46
7.3.210.0090.00916.60
7.3.200.0140.00419.39
7.3.190.0000.01816.68
7.3.180.0070.01016.70
7.3.170.0160.00616.67
7.3.160.0130.00616.51
7.3.120.0090.00715.13
7.3.110.0100.01014.84
7.3.100.0040.01114.91
7.3.90.0060.00314.89
7.3.80.0090.00615.08
7.3.70.0030.01014.83
7.3.60.0100.00714.91
7.3.50.0130.00014.91
7.3.40.0070.00714.63
7.3.30.0030.00914.95
7.3.20.0000.01216.71
7.3.10.0050.01016.61
7.3.00.0040.00816.67
7.2.330.0090.00916.57
7.2.320.0130.01016.82
7.2.310.0100.01316.90
7.2.300.0090.00616.78
7.2.290.0090.00916.83
7.2.250.0060.01215.34
7.2.240.0100.01015.07
7.2.230.0040.01115.10
7.2.220.0040.00815.02
7.2.210.0060.00915.01
7.2.200.0060.00914.83
7.2.190.0030.00615.18
7.2.180.0060.00614.82
7.2.170.0070.01014.88
7.2.130.0070.00716.84
7.2.120.0100.00616.87
7.2.110.0050.01016.84
7.2.100.0100.00216.77
7.2.90.0050.00916.80
7.2.80.0070.00716.69
7.2.70.0080.00816.90
7.2.60.0100.00416.77
7.2.50.0130.00616.79
7.2.40.0060.00716.98
7.2.30.0080.00816.86
7.2.20.0090.00516.78
7.2.10.0050.00816.83
7.2.00.0020.01217.48
7.1.330.0070.00715.72
7.1.320.0070.00715.92
7.1.310.0000.00915.88
7.1.300.0050.00615.82
7.1.290.0090.00615.60
7.1.280.0080.00315.79
7.1.270.0040.00815.82
7.1.260.0080.00815.99
7.1.250.0080.00715.63
7.1.200.0030.01215.84
7.1.100.0100.00018.09
7.1.70.0030.00617.14
7.1.60.0110.01519.82
7.1.50.0090.01217.11
7.1.00.0030.07722.44
7.0.200.0060.00616.60
7.0.140.0030.06722.15
7.0.60.0030.08320.05
7.0.50.0030.04017.98
7.0.40.0070.04320.09
7.0.30.0430.06320.26
7.0.20.0170.04320.19
7.0.10.0330.06320.30
7.0.00.0030.05020.30
5.6.280.0000.07721.11
5.6.210.0070.08720.70
5.6.200.0130.05318.16
5.6.190.0170.07320.79
5.6.180.3600.04020.64
5.6.170.0300.05320.44
5.6.160.0100.04720.50
5.6.150.0070.08018.17
5.6.140.0070.06718.24
5.6.130.0000.05018.19
5.6.120.0130.06021.00
5.6.110.0070.07321.01
5.6.100.0000.05021.13
5.6.90.0070.08321.14
5.6.80.0130.05020.39
5.6.70.0300.07720.38
5.5.350.0070.08020.40
5.5.340.0100.08317.96
5.5.330.0070.04320.45
5.5.320.0200.03720.27
5.5.310.0200.04720.27
5.5.300.0070.03718.01
5.5.290.0030.06018.01
5.5.280.0030.05720.99
5.5.270.0100.06720.73
5.5.260.0100.08320.74
5.5.250.0030.09020.70
5.5.240.0130.07320.13
5.4.450.0870.05319.17
5.4.440.0900.06719.20
5.4.430.0070.06319.21
5.4.420.0070.05719.36
5.4.410.0100.05319.36
5.4.400.0070.05318.81
5.4.390.0130.05018.84
5.4.380.0270.05718.73
5.4.370.0130.05718.70
5.4.360.0170.05318.71
5.4.350.0070.06318.63
5.4.340.0230.04318.51
5.4.320.0070.03812.51
5.4.310.0060.03812.51
5.4.300.0070.03912.51
5.4.290.0090.04312.51
5.4.280.0110.03812.41
5.4.270.0070.05718.95
5.4.260.0300.05718.71
5.4.250.0130.07318.71
5.4.240.0100.07019.04
5.4.230.0070.06018.60
5.4.220.0100.07718.70
5.4.210.0130.05318.91
5.4.200.0100.06718.91
5.4.190.0070.05718.94
5.4.180.0200.06018.91
5.4.170.0170.05318.57
5.4.160.0170.04318.90
5.4.150.0130.07718.77
5.4.140.0130.06716.37
5.4.130.0030.05316.45
5.4.120.0170.04316.52
5.4.110.0100.04716.28
5.4.100.0170.04316.43
5.4.90.0170.06016.41
5.4.80.0170.05716.34
5.4.70.0170.05716.45
5.4.60.0170.06716.33
5.4.50.0200.05016.54
5.4.40.0100.06716.36
5.4.30.0100.06716.47
5.4.20.0100.05716.41
5.4.10.0200.04316.54
5.4.00.0000.05715.85
5.3.290.0070.05112.80
5.3.280.0030.06014.46
5.3.270.0100.08014.70
5.3.260.0130.05714.63
5.3.250.0170.04714.45
5.3.240.0130.07314.59
5.3.230.0070.07714.61
5.3.220.0030.06014.66
5.3.210.0270.05014.74
5.3.200.0170.05314.64
5.3.190.0170.05314.66
5.3.180.0170.04314.54
5.3.170.0100.07314.66
5.3.160.0130.06714.55
5.3.150.0070.05714.64
5.3.140.0130.06314.60
5.3.130.0030.06014.64
5.3.120.0130.05014.64
5.3.110.0170.07714.46
5.3.100.0070.05713.87
5.3.90.0130.07014.19
5.3.80.0000.07714.02
5.3.70.0100.05014.03
5.3.60.0100.05714.02
5.3.50.0130.05013.79
5.3.40.0070.05713.86
5.3.30.0070.06014.00
5.3.20.0130.04313.89
5.3.10.0070.07013.73
5.3.00.0100.05713.74
5.2.170.0030.06011.24
5.2.160.0100.05011.22
5.2.150.0030.05311.34
5.2.140.0000.05010.98
5.2.130.0100.05011.19
5.2.120.0070.05711.33
5.2.110.0030.05711.10
5.2.100.0130.03311.07
5.2.90.0030.04711.19
5.2.80.0030.04311.18
5.2.70.0030.04311.11
5.2.60.0030.04711.04
5.2.50.0170.04311.20
5.2.40.0030.04311.24
5.2.30.0030.06010.96
5.2.20.0000.06010.80
5.2.10.0000.04310.95
5.2.00.0070.05710.57
5.1.60.0100.0479.93
5.1.50.0030.04010.25
5.1.40.0070.04710.06
5.1.30.0170.04010.43
5.1.20.0000.05710.44
5.1.10.0170.04010.13
5.1.00.0070.05310.05
5.0.50.0100.0308.90
5.0.40.0100.0338.90
5.0.30.0030.0608.90
5.0.20.0030.0378.90
5.0.10.0030.0278.90
5.0.00.0000.0438.90
4.4.90.0130.0178.90
4.4.80.0000.0238.90
4.4.70.0030.0238.90
4.4.60.0030.0208.90
4.4.50.0000.0238.90
4.4.40.0070.0438.90
4.4.30.0030.0208.90
4.4.20.0000.0338.90
4.4.10.0000.0338.90
4.4.00.0030.0438.90
4.3.110.0070.0238.90
4.3.100.0000.0278.90
4.3.90.0030.0238.90
4.3.80.0030.0408.90
4.3.70.0000.0278.90
4.3.60.0070.0208.90
4.3.50.0030.0278.90
4.3.40.0000.0538.90
4.3.30.0030.0208.90
4.3.20.0070.0238.90
4.3.10.0000.0238.90
4.3.00.0130.0307.38

preferences:
71.79 ms | 401 KiB | 5 Q