3v4l.org

run code in 300+ PHP versions simultaneously
<?php function get_next_colid(string $id): string { $length = \strlen($id); for ($i = $length - 1; $i >= 0; $i--) { if ($id[$i] === "\xff") { $id[$i] = "\0"; continue; } $id[$i] = \chr(\ord($id[$i]) + 1); return $id; } return str_repeat("\0", $length + 1); } var_dump( get_next_colid(''), get_next_colid('hello'), get_next_colid('world'), get_next_colid('a'), get_next_colid('c'), get_next_colid('👍'), );

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)
8.5.30.0110.00620.16
8.5.20.0080.01020.25
8.5.10.0120.00421.78
8.5.00.0160.00719.97
8.4.180.0120.01019.41
8.4.170.0110.01120.67
8.4.160.0100.01223.98
8.4.150.0080.00416.86
8.4.140.0130.00717.67
8.4.130.0060.00417.72
8.4.120.0110.00820.70
8.4.110.0120.00818.71
8.4.100.0110.01017.52
8.4.90.0070.00420.77
8.4.80.0090.00920.58
8.4.70.0080.01219.02
8.4.60.0100.01020.80
8.4.50.0110.01021.94
8.4.40.0100.00719.31
8.4.30.0040.01220.47
8.4.20.0110.00819.54
8.4.10.0070.00320.68
8.3.300.0120.00820.78
8.3.290.0080.01220.79
8.3.280.0110.00918.29
8.3.270.0080.01116.29
8.3.260.0140.00816.63
8.3.250.0090.00517.23
8.3.240.0060.00216.57
8.3.230.0100.00816.64
8.3.220.0100.01120.75
8.3.210.0080.00816.44
8.3.200.0060.00316.41
8.3.190.0060.00219.02
8.3.180.0090.00618.94
8.3.170.0110.00717.36
8.3.160.0070.01116.52
8.3.150.0040.01216.79
8.3.140.0080.00018.79
8.3.130.0030.00616.65
8.3.120.0080.00018.85
8.3.110.0090.00016.53
8.3.100.0000.00918.14
8.3.90.0120.00426.77
8.3.80.0030.00616.36
8.3.70.0160.00016.58
8.3.60.0110.00417.93
8.3.50.0100.00320.23
8.3.40.0130.00319.04
8.3.30.0070.00719.17
8.3.20.0070.00024.18
8.3.10.0040.00424.66
8.3.00.0030.00726.16
8.2.300.0120.00822.10
8.2.290.0090.00920.23
8.2.280.0100.01020.23
8.2.270.0090.00916.79
8.2.260.0120.00617.08
8.2.250.0040.00418.57
8.2.240.0040.00416.67
8.2.230.0030.00620.94
8.2.220.0030.00524.06
8.2.210.0000.00826.77
8.2.200.0090.00016.48
8.2.190.0120.00616.75
8.2.180.0080.00825.92
8.2.170.0150.00319.02
8.2.160.0120.00322.96
8.2.150.0080.00025.66
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0040.00426.16
8.2.110.0060.00320.32
8.2.100.0090.00317.91
8.2.90.0040.00417.75
8.2.80.0040.00418.78
8.2.70.0030.00617.38
8.2.60.0040.00417.38
8.2.50.0080.00017.98
8.2.40.0000.00718.34
8.2.30.0040.00418.42
8.2.20.0000.00720.32
8.2.10.0050.00218.13
8.2.00.0000.00719.38
8.1.340.0120.01017.64
8.1.330.0120.00816.20
8.1.320.0100.00822.04
8.1.310.0000.00916.77
8.1.300.0110.00418.52
8.1.290.0030.00630.84
8.1.280.0100.00725.92
8.1.270.0050.00323.99
8.1.260.0000.00726.35
8.1.250.0080.00028.09
8.1.240.0050.00519.06
8.1.230.0070.00417.77
8.1.220.0040.00417.91
8.1.210.0040.00418.77
8.1.200.0000.00917.48
8.1.190.0000.00817.35
8.1.180.0050.00318.10
8.1.170.0000.00817.62
8.1.160.0050.00518.89
8.1.150.0070.00018.57
8.1.140.0030.00517.43
8.1.130.0040.00418.80
8.1.120.0040.00417.44
8.1.110.0040.00417.46
8.1.100.0060.00317.34
8.1.90.0030.00517.45
8.1.80.0030.00617.44
8.1.70.0030.00317.45
8.1.60.0000.00817.57
8.1.50.0030.00517.58
8.1.40.0080.00017.41
8.1.30.0050.00517.54
8.1.20.0050.00617.52
8.1.10.0030.00617.51
8.1.00.0030.00617.45
8.0.300.0000.00718.77
8.0.290.0040.00416.75
8.0.280.0080.00018.45
8.0.270.0000.00716.72
8.0.260.0060.00018.33
8.0.250.0030.00316.86
8.0.240.0070.00016.85
8.0.230.0070.00016.84
8.0.220.0060.00316.79
8.0.210.0070.00016.89
8.0.200.0030.00316.95
8.0.190.0030.00516.84
8.0.180.0070.00016.80
8.0.170.0040.00516.80
8.0.160.0080.00016.82
8.0.150.0050.00416.74
8.0.140.0020.00616.77
8.0.130.0000.00816.71
8.0.120.0030.00616.82
8.0.110.0070.00216.76
8.0.100.0090.00316.83
8.0.90.0060.00316.81
8.0.80.0030.00716.78
8.0.70.0050.00616.85
8.0.60.0020.00716.90
8.0.50.0060.00416.84
8.0.30.0070.00316.79
8.0.20.0040.00616.82
8.0.10.0100.00216.98
7.4.330.0000.00515.55
7.4.320.0060.00016.36
7.4.300.0000.00916.56
7.4.290.0070.00016.42
7.4.280.0100.00416.46
7.4.270.0140.00016.41
7.4.260.0090.00616.51
7.4.250.0100.00616.45
7.4.240.0090.00516.43
7.4.230.0020.00816.50
7.4.220.0010.00916.50
7.4.210.0030.00616.51
7.4.200.0030.00616.57
7.4.190.0050.00416.61
7.4.180.0060.00416.55
7.4.160.0030.00616.53
7.4.150.0020.00716.48
7.4.140.0030.00516.37
7.4.130.0070.00316.38
7.4.120.0050.00416.40
7.4.110.0060.00216.34
7.4.100.0070.00116.40
7.4.90.0060.00416.36
7.4.80.0010.00816.31
7.4.70.0060.00416.43
7.4.60.0030.00616.34
7.4.50.0090.00116.32
7.4.40.0030.00716.36
7.4.30.0050.00416.38
7.4.20.0050.00516.45
7.4.10.0040.00516.45
7.4.00.0050.00416.41

preferences:
44.32 ms | 1248 KiB | 5 Q