3v4l.org

run code in 300+ PHP versions simultaneously
<?php function shouldUpdateUsername($source, $existing) { if ($source !== $existing) { $pattern = sprintf('/%s \[\d+\]/', preg_quote($source, '/')); $processedBefore = preg_match($pattern, $existing) !== 1; $sourceAvailable = false; return $sourceAvailable || $processedBefore; } return false; } var_dump(shouldUpdateUsername('A [1]', 'AA [1]'));

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)
8.3.60.0040.01116.50
8.3.50.0120.00821.94
8.3.40.0110.00418.76
8.3.30.0000.01419.08
8.3.20.0040.00420.38
8.3.10.0030.00620.61
8.3.00.0080.00019.50
8.2.180.0090.00618.30
8.2.170.0080.00822.96
8.2.160.0000.01420.44
8.2.150.0000.00724.18
8.2.140.0000.00824.66
8.2.130.0050.00326.16
8.2.120.0040.00421.23
8.2.110.0060.00322.27
8.2.100.0090.00317.84
8.2.90.0000.00919.05
8.2.80.0050.00317.97
8.2.70.0060.00317.75
8.2.60.0000.00817.92
8.2.50.0060.00318.07
8.2.40.0030.00618.22
8.2.30.0000.00719.53
8.2.20.0040.00417.80
8.2.10.0030.00618.19
8.2.00.0000.00717.89
8.1.280.0070.01325.92
8.1.270.0080.00023.96
8.1.260.0000.00826.35
8.1.250.0000.00828.09
8.1.240.0030.00623.86
8.1.230.0070.00419.16
8.1.220.0040.00417.77
8.1.210.0040.00418.77
8.1.200.0100.00017.36
8.1.190.0050.00317.35
8.1.180.0000.00818.10
8.1.170.0000.00818.73
8.1.160.0070.00021.92
8.1.150.0040.00418.95
8.1.140.0000.00817.67
8.1.130.0030.00317.93
8.1.120.0000.00717.52
8.1.110.0050.00317.66
8.1.100.0040.00417.52
8.1.90.0070.00017.58
8.1.80.0000.00817.62
8.1.70.0030.00317.58
8.1.60.0030.00617.75
8.1.50.0040.00417.67
8.1.40.0040.00417.54
8.1.30.0040.00417.73
8.1.20.0040.00417.72
8.1.10.0000.00717.52
8.1.00.0060.00317.57
8.0.300.0040.00419.14
8.0.290.0070.00016.63
8.0.280.0030.00318.48
8.0.270.0000.00716.93
8.0.260.0040.00417.26
8.0.250.0070.00017.05
8.0.240.0030.00317.06
8.0.230.0040.00417.09
8.0.220.0000.00817.09
8.0.210.0030.00317.07
8.0.200.0000.00817.11
8.0.190.0110.00017.04
8.0.180.0000.00717.12
8.0.170.0050.00317.02
8.0.160.0040.00417.00
8.0.150.0040.00416.89
8.0.140.0050.00216.95
8.0.130.0000.00913.48
8.0.120.0030.00517.07
8.0.110.0000.00717.09
8.0.100.0000.00817.05
8.0.90.0080.00016.87
8.0.80.0090.00617.01
8.0.70.0080.00017.09
8.0.60.0000.00717.05
8.0.50.0040.00417.08
8.0.30.0090.01417.09
8.0.20.0140.00617.40
8.0.10.0040.00417.13
8.0.00.0060.01216.82
7.4.330.0000.00515.25
7.4.320.0030.00516.80
7.4.300.0070.00016.86
7.4.290.0030.00316.84
7.4.280.0040.00416.72
7.4.270.0070.00016.66
7.4.260.0030.00316.68
7.4.250.0040.00416.81
7.4.240.0050.00216.78
7.4.230.0030.00316.83
7.4.220.0030.01716.66
7.4.210.0090.00916.82
7.4.200.0030.00316.93
7.4.160.0090.01316.85
7.4.150.0080.01917.40
7.4.140.0070.01017.86
7.4.130.0070.01016.68
7.4.120.0080.01016.78
7.4.110.0090.00916.83
7.4.100.0110.00716.53
7.4.90.0110.00616.62
7.4.80.0000.01819.39
7.4.70.0070.01016.62
7.4.60.0060.01316.95
7.4.50.0050.00316.69
7.4.40.0030.01316.61
7.4.30.0060.01016.67
7.4.00.0060.00615.29
7.3.330.0060.00013.48
7.3.320.0030.00313.42
7.3.310.0000.00716.36
7.3.300.0040.00416.34
7.3.290.0140.00716.46
7.3.280.0100.00616.44
7.3.270.0190.02917.40
7.3.260.0090.01016.81
7.3.250.0140.00316.59
7.3.240.0100.00916.78
7.3.230.0130.00316.39
7.3.210.0070.01116.78
7.3.200.0060.01219.39
7.3.190.0070.01016.66
7.3.180.0130.00316.83
7.3.170.0130.00916.70
7.3.160.0040.01216.79
7.3.10.0070.00317.08
7.3.00.0070.01116.58
7.2.330.0070.01116.83
7.2.320.0100.01416.93
7.2.310.0100.01016.68
7.2.300.0100.00716.82
7.2.290.0060.01016.71
7.2.130.0140.00717.14
7.2.120.0170.00416.98
7.2.110.0060.00616.84
7.2.100.0100.01016.85
7.2.90.0130.00317.00
7.2.80.0070.01016.97
7.2.70.0070.00416.93
7.2.60.0030.01216.97
7.2.50.0080.00317.09
7.2.40.0100.01417.16
7.2.30.0160.00417.22
7.2.20.0030.00617.05
7.2.10.0100.00716.78
7.2.00.0100.00618.16
7.1.250.0040.00715.95
7.1.200.0070.00716.04
7.1.100.0040.00718.36
7.1.70.0000.00817.10
7.1.60.0140.00719.61
7.1.50.0030.00716.91
7.1.00.0000.08022.45
7.0.200.0400.00714.78
7.0.140.0000.07021.96
7.0.60.0030.04319.82
7.0.50.0000.09017.87
7.0.40.0000.04720.29
7.0.30.0530.07020.09
7.0.20.0130.06020.26
7.0.10.0070.05320.27
7.0.00.0100.03720.23
5.6.280.0100.06720.91
5.6.210.0030.04320.71
5.6.200.0100.06718.29
5.6.190.0170.07320.52
5.6.180.0570.05720.64
5.6.170.0230.04020.54
5.6.160.0200.06320.39
5.6.150.0030.04318.19
5.6.140.0070.08318.15
5.6.130.0070.04718.11
5.6.120.0070.04020.80
5.6.110.0070.08720.96
5.6.100.0100.08020.98
5.6.90.0130.07720.96
5.6.80.0330.04320.40
5.5.350.0300.06320.48
5.5.340.0100.08017.95
5.5.330.0100.05020.30
5.5.320.0230.04020.24
5.5.310.0200.04020.27
5.5.300.0130.05717.98
5.5.290.0100.03717.96
5.5.280.0000.06720.66
5.5.270.0070.03720.86
5.5.260.0270.07020.77
5.5.250.0100.06720.70
5.5.240.0130.03720.13
5.4.450.0570.04719.25
5.4.440.0100.05319.41
5.4.430.0170.04719.63
5.4.420.0230.04319.40
5.4.410.0330.04319.34
5.4.400.0430.03319.09
5.4.390.0170.04019.00
5.4.380.0130.06018.50
5.4.370.0170.07018.58
5.4.360.0370.03718.72
5.4.350.0230.07018.81
5.4.340.0230.06018.79
5.4.320.0070.03612.51
5.4.310.0090.04212.50
5.4.300.0100.04312.50
5.4.290.0100.05012.50
5.4.280.0070.03512.40
5.4.270.0060.03712.40
5.4.260.0060.04412.40
5.4.250.0080.03712.40
5.4.240.0070.03512.40
5.4.230.0080.03612.39
5.4.220.0090.03412.39
5.4.210.0060.04212.39
5.4.200.0070.03812.39
5.4.190.0110.03212.39
5.4.180.0110.03212.39
5.4.170.0080.03712.39
5.4.160.0070.03912.39
5.4.150.0080.03512.39
5.4.140.0070.03612.07
5.4.130.0060.03712.05
5.4.120.0040.04612.02
5.4.110.0090.03612.02
5.4.100.0090.03712.02
5.4.90.0060.04412.01
5.4.80.0050.04112.02
5.4.70.0070.04412.01
5.4.60.0060.03512.01
5.4.50.0040.04112.01
5.4.40.0040.03612.00
5.4.30.0060.03412.00
5.4.20.0010.04011.99
5.4.10.0060.03411.99
5.4.00.0050.03611.48
5.3.290.0100.04012.80
5.3.280.0130.06412.71
5.3.270.0040.04212.72
5.3.260.0090.04112.72
5.3.250.0060.03812.72
5.3.240.0120.03312.72
5.3.230.0070.04112.71
5.3.220.0100.04312.68
5.3.210.0060.04112.68
5.3.200.0090.03412.68
5.3.190.0050.03912.68
5.3.180.0070.03612.67
5.3.170.0080.04112.67
5.3.160.0100.03312.67
5.3.150.0060.03712.67
5.3.140.0050.03812.66
5.3.130.0060.03912.66
5.3.120.0120.03612.66
5.3.110.0070.04412.65
5.3.100.0060.03912.13
5.3.90.0030.04012.11
5.3.80.0090.03312.11
5.3.70.0060.03712.10
5.3.60.0100.03912.09
5.3.50.0060.04112.03
5.3.40.0050.03812.05
5.3.30.0030.03911.99
5.3.20.0080.03911.77
5.3.10.0080.03611.74
5.3.00.0080.04111.73
5.2.170.0060.0419.23
5.2.160.0080.0289.23
5.2.150.0070.0299.22
5.2.140.0070.0299.22
5.2.130.0100.0259.18
5.2.120.0080.0389.19
5.2.110.0080.0359.19
5.2.100.0030.0309.18
5.2.90.0060.0279.18
5.2.80.0070.0329.18
5.2.70.0060.0299.18
5.2.60.0070.0329.14
5.2.50.0070.0289.11
5.2.40.0050.0299.09
5.2.30.0030.0329.06
5.2.20.0060.0299.05
5.2.10.0090.0238.94
5.2.00.0060.0278.80
5.1.60.0000.0288.09
5.1.50.0030.0268.09
5.1.40.0040.0258.06
5.1.30.0050.0268.41
5.1.20.0050.0258.44
5.1.10.0060.0248.16
5.1.00.0060.0248.16
5.0.50.0050.0196.64
5.0.40.0050.0186.50
5.0.30.0030.0416.30
5.0.20.0040.0226.28
5.0.10.0050.0316.26
5.0.00.0020.0326.25
4.4.90.0030.0154.77
4.4.80.0040.0144.76
4.4.70.0070.0194.75
4.4.60.0030.0164.75
4.4.50.0000.0184.77
4.4.40.0040.0284.71
4.4.30.0040.0164.76
4.4.20.0030.0174.85
4.4.10.0030.0154.85
4.4.00.0050.0254.76
4.3.110.0050.0204.67
4.3.100.0030.0144.66
4.3.90.0030.0144.64
4.3.80.0030.0244.59
4.3.70.0050.0194.63
4.3.60.0030.0204.63
4.3.50.0060.0174.63
4.3.40.0020.0254.54
4.3.30.0030.0153.30
4.3.20.0010.0183.28
4.3.10.0050.0173.24
4.3.00.0070.01713.95

preferences:
38.9 ms | 401 KiB | 5 Q