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('Test', 'Test'));

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)
8.3.60.0140.00316.62
8.3.50.0120.00522.04
8.3.40.0160.00018.67
8.3.30.0130.00019.10
8.3.20.0040.00420.24
8.3.10.0040.00420.54
8.3.00.0040.00419.38
8.2.180.0080.00818.41
8.2.170.0070.00722.96
8.2.160.0100.00320.39
8.2.150.0080.00024.18
8.2.140.0060.00324.66
8.2.130.0030.00626.16
8.2.120.0050.00319.54
8.2.110.0000.00920.53
8.2.100.0070.00419.25
8.2.90.0090.00018.97
8.2.80.0030.00617.97
8.2.70.0040.00417.48
8.2.60.0030.00917.89
8.2.50.0040.00418.07
8.2.40.0050.00518.09
8.2.30.0040.00419.32
8.2.20.0030.00617.63
8.2.10.0000.00717.77
8.2.00.0000.00717.68
8.1.280.0110.00425.92
8.1.270.0030.00522.19
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0100.00723.88
8.1.230.0040.00719.00
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0100.00017.10
8.1.190.0040.00417.23
8.1.180.0090.00018.10
8.1.170.0030.00618.46
8.1.160.0040.00422.02
8.1.150.0040.00418.73
8.1.140.0040.00417.27
8.1.130.0030.00317.77
8.1.120.0050.00317.36
8.1.110.0000.00817.35
8.1.100.0000.00717.32
8.1.90.0070.00017.28
8.1.80.0030.00317.22
8.1.70.0030.00317.29
8.1.60.0030.00617.54
8.1.50.0030.00517.47
8.1.40.0040.00417.29
8.1.30.0050.00317.49
8.1.20.0030.00517.63
8.1.10.0040.00417.45
8.1.00.0060.00317.38
8.0.300.0050.00318.77
8.0.290.0050.00216.63
8.0.280.0030.00318.25
8.0.270.0030.00317.05
8.0.260.0070.00017.06
8.0.250.0030.00316.83
8.0.240.0070.00016.85
8.0.230.0040.00416.73
8.0.220.0070.00016.80
8.0.210.0040.00416.64
8.0.200.0000.00716.70
8.0.190.0100.00016.86
8.0.180.0070.00016.83
8.0.170.0050.00316.84
8.0.160.0000.00716.77
8.0.150.0000.00716.69
8.0.140.0050.00316.57
8.0.130.0020.00613.21
8.0.120.0040.00416.77
8.0.110.0050.00516.69
8.0.100.0070.00016.72
8.0.90.0000.00816.56
8.0.80.0070.00716.75
8.0.70.0030.00516.68
8.0.60.0040.00416.67
8.0.50.0050.00216.66
8.0.30.0050.01317.19
8.0.20.0110.00817.40
8.0.10.0040.00416.77
8.0.00.0100.00716.89
7.4.330.0000.00615.03
7.4.320.0030.00616.44
7.4.300.0000.00616.57
7.4.290.0030.00316.55
7.4.280.0000.00716.54
7.4.270.0030.00316.46
7.4.260.0030.00616.61
7.4.250.0040.00416.37
7.4.240.0030.00316.49
7.4.230.0000.00716.36
7.4.220.0140.00416.49
7.4.210.0030.01016.57
7.4.200.0050.00216.55
7.4.160.0110.01116.47
7.4.150.0120.01517.40
7.4.140.0180.00617.86
7.4.130.0080.00916.40
7.4.120.0100.00916.66
7.4.110.0060.01016.58
7.4.100.0120.01216.66
7.4.90.0110.00616.52
7.4.80.0130.00319.39
7.4.70.0070.01016.68
7.4.60.0090.00816.35
7.4.50.0050.00316.39
7.4.40.0070.01016.70
7.4.30.0120.00316.54
7.4.00.0070.00715.01
7.3.330.0000.00613.32
7.3.320.0030.00313.30
7.3.310.0030.00316.34
7.3.300.0030.00316.32
7.3.290.0040.01116.25
7.3.280.0040.01116.32
7.3.270.0090.00917.40
7.3.260.0040.01316.56
7.3.250.0070.01016.52
7.3.240.0060.01316.33
7.3.230.0060.01016.39
7.3.210.0090.00616.23
7.3.200.0090.00719.39
7.3.190.0080.00816.57
7.3.180.0060.00916.20
7.3.170.0100.00716.60
7.3.160.0060.01016.28
7.2.330.0100.00716.46
7.2.320.0090.00816.70
7.2.310.0100.01416.74
7.2.300.0070.01016.53
7.2.290.0130.00316.72
7.2.00.0030.00919.33
7.1.100.0040.00717.96
7.1.70.0040.00417.11
7.1.60.0070.01319.61
7.1.50.0100.01616.91
7.1.00.0030.07722.48
7.0.200.0330.00014.55
7.0.140.0070.07021.92
7.0.60.0100.08019.95
7.0.50.0100.07717.84
7.0.40.0070.08720.10
7.0.30.0430.06020.25
7.0.20.0130.04720.26
7.0.10.0070.04320.27
7.0.00.0030.05020.08
5.6.280.0000.07721.10
5.6.210.0100.07020.77
5.6.200.0030.07318.34
5.6.190.0030.04320.42
5.6.180.0400.06320.45
5.6.170.0400.08020.54
5.6.160.0030.09020.39
5.6.150.0030.07018.17
5.6.140.0100.07718.28
5.6.130.0130.04718.18
5.6.120.0070.08320.92
5.6.110.0130.08021.12
5.6.100.0130.05721.09
5.6.90.0000.06020.96
5.6.80.0130.07320.51
5.5.350.0130.05320.35
5.5.340.0170.05317.94
5.5.330.0100.04020.40
5.5.320.0270.04020.30
5.5.310.0200.03720.41
5.5.300.0030.04017.97
5.5.290.0070.04017.94
5.5.280.0130.05320.65
5.5.270.0030.04020.85
5.5.260.0070.08320.79
5.5.250.0100.08320.68
5.5.240.0170.07020.29
5.4.450.0830.04719.55
5.4.440.0270.04019.16
5.4.430.0370.05719.54
5.4.420.0230.04319.16
5.4.410.0700.04019.42
5.4.400.0370.04019.07
5.4.390.0470.04319.09
5.4.380.0470.05018.81
5.4.370.0200.05018.60
5.4.360.0170.06018.70
5.4.350.0070.08318.75
5.4.340.0300.04718.75
5.4.320.0040.03912.50
5.4.310.0100.03512.50
5.4.300.0080.03512.51
5.4.290.0060.04012.50
5.4.280.0080.03412.40
5.4.270.0060.04212.39
5.4.260.0090.03612.39
5.4.250.0070.03812.40
5.4.240.0070.04012.39
5.4.230.0090.03612.39
5.4.220.0060.03912.39
5.4.210.0060.03612.39
5.4.200.0030.04512.39
5.4.190.0080.04012.39
5.4.180.0090.03512.39
5.4.170.0070.03712.40
5.4.160.0060.03512.39
5.4.150.0060.03612.39
5.4.140.0090.04312.07
5.4.130.0050.03612.06
5.4.120.0070.03512.02
5.4.110.0050.03612.02
5.4.100.0080.03412.01
5.4.90.0080.03512.02
5.4.80.0050.03812.01
5.4.70.0030.04312.00
5.4.60.0080.03212.00
5.4.50.0070.03512.01
5.4.40.0050.03512.00
5.4.30.0080.03311.99
5.4.20.0030.04011.99
5.4.10.0090.04011.99
5.4.00.0070.04011.48
5.3.290.0050.04112.80
5.3.280.0070.03712.71
5.3.270.0060.03912.72
5.3.260.0080.03712.71
5.3.250.0080.03812.72
5.3.240.0070.03612.72
5.3.230.0050.03912.71
5.3.220.0070.03912.68
5.3.210.0090.03712.68
5.3.200.0060.03612.68
5.3.190.0030.04012.68
5.3.180.0050.03712.68
5.3.170.0070.03512.67
5.3.160.0070.03812.67
5.3.150.0060.03712.68
5.3.140.0090.03312.66
5.3.130.0070.05112.65
5.3.120.0060.04112.66
5.3.110.0060.03812.66
5.3.100.0060.04612.11
5.3.90.0080.04212.10
5.3.80.0080.03712.09
5.3.70.0050.03812.09
5.3.60.0100.03312.08
5.3.50.0080.03412.01
5.3.40.0030.04312.02
5.3.30.0070.03411.98
5.3.20.0040.04311.76
5.3.10.0070.03711.73
5.3.00.0040.03911.72
5.2.170.0090.0339.22
5.2.160.0060.0359.21
5.2.150.0050.0309.21
5.2.140.0050.0309.21
5.2.130.0040.0309.18
5.2.120.0050.0289.18
5.2.110.0040.0319.18
5.2.100.0030.0299.18
5.2.90.0030.0309.17
5.2.80.0030.0329.17
5.2.70.0050.0309.17
5.2.60.0050.0299.13
5.2.50.0060.0299.10
5.2.40.0060.0279.07
5.2.30.0050.0299.05
5.2.20.0040.0309.04
5.2.10.0070.0268.94
5.2.00.0030.0318.80
5.1.60.0050.0238.09
5.1.50.0040.0258.09
5.1.40.0040.0288.06
5.1.30.0050.0308.41
5.1.20.0060.0268.43
5.1.10.0060.0258.16
5.1.00.0030.0288.16
5.0.50.0020.0226.64
5.0.40.0020.0206.50
5.0.30.0040.0306.31
5.0.20.0030.0206.27
5.0.10.0060.0176.26
5.0.00.0050.0296.25
4.4.90.0040.0144.78
4.4.80.0020.0174.75
4.4.70.0050.0204.76
4.4.60.0030.0164.76
4.4.50.0060.0174.77
4.4.40.0030.0254.71
4.4.30.0020.0174.75
4.4.20.0020.0164.84
4.4.10.0030.0154.85
4.4.00.0030.0244.76
4.3.110.0030.0154.67
4.3.100.0020.0154.67
4.3.90.0040.0134.64
4.3.80.0030.0244.59
4.3.70.0030.0144.63
4.3.60.0030.0144.63
4.3.50.0040.0154.63
4.3.40.0050.0214.54
4.3.30.0030.0203.30
4.3.20.0020.0183.28
4.3.10.0030.0163.24
4.3.00.0000.01313.95

preferences:
46.8 ms | 401 KiB | 5 Q