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)
8.3.60.0120.00616.75
8.3.50.0150.00322.09
8.3.40.0090.00619.02
8.3.30.0070.00718.98
8.3.20.0000.00720.16
8.3.10.0000.00820.73
8.3.00.0040.00419.38
8.2.180.0060.00918.29
8.2.170.0140.00722.96
8.2.160.0100.00320.47
8.2.150.0070.00024.18
8.2.140.0080.00024.66
8.2.130.0070.00026.16
8.2.120.0080.00021.21
8.2.110.0100.00022.10
8.2.100.0120.00017.91
8.2.90.0000.00819.05
8.2.80.0050.00317.97
8.2.70.0030.00617.75
8.2.60.0060.00317.93
8.2.50.0040.00418.07
8.2.40.0030.00618.22
8.2.30.0020.00519.46
8.2.20.0030.00517.82
8.2.10.0040.00418.16
8.2.00.0000.00717.89
8.1.280.0140.00725.92
8.1.270.0040.00423.99
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0080.00023.96
8.1.230.0070.00318.75
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0030.00917.48
8.1.190.0000.00817.25
8.1.180.0060.00318.10
8.1.170.0040.00418.84
8.1.160.0070.00021.96
8.1.150.0030.00518.94
8.1.140.0030.00617.69
8.1.130.0070.00017.88
8.1.120.0000.00817.65
8.1.110.0000.00717.62
8.1.100.0040.00417.66
8.1.90.0040.00417.61
8.1.80.0040.00417.59
8.1.70.0000.00717.48
8.1.60.0030.00617.70
8.1.50.0000.00817.57
8.1.40.0040.00417.72
8.1.30.0040.00417.81
8.1.20.0060.00317.85
8.1.10.0020.00517.57
8.1.00.0040.00417.61
8.0.300.0050.00219.09
8.0.290.0040.00416.88
8.0.280.0000.00718.47
8.0.270.0000.00717.20
8.0.260.0000.00717.30
8.0.250.0000.00717.08
8.0.240.0070.00017.11
8.0.230.0040.00417.10
8.0.220.0030.00317.06
8.0.210.0070.00017.04
8.0.200.0030.00517.04
8.0.190.0070.00317.03
8.0.180.0050.00317.10
8.0.170.0040.00417.08
8.0.160.0040.00417.07
8.0.150.0030.00316.96
8.0.140.0000.00717.02
8.0.130.0080.00013.41
8.0.120.0080.00017.05
8.0.110.0040.00417.01
8.0.100.0040.00417.14
8.0.90.0030.00517.05
8.0.80.0000.01517.08
8.0.70.0030.00516.94
8.0.60.0040.00416.99
8.0.50.0040.00417.07
8.0.30.0160.00717.27
8.0.20.0090.01217.44
8.0.10.0000.00717.13
8.0.00.0070.01016.92
7.4.330.0060.00015.11
7.4.320.0060.00316.81
7.4.300.0030.00316.77
7.4.290.0000.00616.76
7.4.280.0070.00016.64
7.4.270.0030.00316.77
7.4.260.0070.00016.76
7.4.250.0000.00716.68
7.4.240.0060.00116.82
7.4.230.0030.00316.66
7.4.220.0130.00616.75
7.4.210.0160.00016.77
7.4.200.0070.00016.62
7.4.160.0120.00916.87
7.4.150.0090.00917.40
7.4.140.0120.01017.86
7.4.130.0080.00816.75
7.4.120.0080.01016.72
7.4.110.0090.00916.54
7.4.100.0100.01016.59
7.4.90.0130.00316.66
7.4.80.0030.01319.39
7.4.70.0090.01216.71
7.4.60.0120.00916.67
7.4.50.0040.00416.61
7.4.40.0130.00316.84
7.4.30.0120.00416.61
7.4.00.0090.00615.27
7.3.330.0030.00313.47
7.3.320.0050.00013.25
7.3.310.0030.00516.36
7.3.300.0080.00016.45
7.3.290.0070.00716.45
7.3.280.0110.00616.43
7.3.270.0180.01417.40
7.3.260.0130.00816.68
7.3.250.0090.01016.59
7.3.240.0160.00616.48
7.3.230.0070.01016.82
7.3.210.0100.00716.83
7.3.200.0130.00319.39
7.3.190.0070.01616.62
7.3.180.0080.00816.44
7.3.170.0080.00816.67
7.3.160.0150.00616.81
7.3.10.0190.00016.30
7.3.00.0140.00716.38
7.2.330.0150.00616.80
7.2.320.0160.00616.71
7.2.310.0090.01516.68
7.2.300.0100.00616.68
7.2.290.0040.01316.83
7.2.130.0090.00916.71
7.2.120.0130.01016.90
7.2.110.0130.01016.82
7.2.100.0190.00316.56
7.2.90.0160.00417.05
7.2.80.0140.00916.65
7.2.70.0070.01416.47
7.2.60.0110.00716.97
7.2.50.0190.00516.82
7.2.40.0150.00816.67
7.2.30.0110.00817.03
7.2.20.0120.00916.79
7.2.10.0130.01016.88
7.2.00.0200.00316.79
7.1.250.0150.00415.39
7.1.200.0120.00315.66
7.1.70.0000.01417.29
7.1.60.0060.01019.61
7.1.50.0070.00317.03
7.1.00.0100.07022.58
7.0.200.0200.01014.84
7.0.140.0070.07021.92
7.0.60.0070.08719.79
7.0.50.0100.03317.89
7.0.40.0130.07320.32
7.0.30.0330.07020.18
7.0.20.0230.05320.22
7.0.10.0230.07720.08
7.0.00.0000.04720.27
5.6.210.0130.07720.45
5.6.200.0130.07318.29
5.6.190.0100.08320.46
5.6.180.0270.08720.68
5.6.170.0200.04320.57
5.6.160.0130.07720.70
5.6.150.0030.09018.18
5.6.140.0100.07718.18
5.6.130.0070.08718.16
5.6.120.0070.09020.99
5.6.110.0130.08020.89
5.6.100.0070.08321.02
5.6.90.0070.04020.88
5.6.80.0030.08020.41
5.6.70.4500.04320.39
5.5.350.0130.08320.53
5.5.340.0000.04717.98
5.5.330.0030.04720.37
5.5.320.0230.04720.24
5.5.310.0230.05320.26
5.5.300.0130.03317.98
5.5.290.0030.06718.01
5.5.280.0070.08320.88
5.5.270.0030.04720.64
5.5.260.0200.07020.79
5.5.250.0230.06720.59
5.5.240.4070.03720.18
5.4.450.0200.03719.18
5.4.440.0100.04719.41
5.4.430.0370.04719.56
5.4.420.0530.03019.17
5.4.410.0330.05319.43
5.4.400.0470.04018.95
5.4.390.0200.03719.06
5.4.380.0300.05018.61
5.4.370.0300.06018.75
5.4.360.0300.04318.70
5.4.350.0100.06018.79
5.4.340.0200.05718.70
5.4.320.0080.04012.50
5.4.310.0040.04012.50
5.4.300.0060.03712.50
5.4.290.0020.04112.50
5.4.280.0070.03412.40
5.4.270.0060.03712.40
5.4.260.0040.04212.40
5.4.250.0090.03512.40
5.4.240.0080.03412.39
5.4.230.0070.03712.39
5.4.220.0070.03612.39
5.4.210.0080.03412.39
5.4.200.0070.04512.39
5.4.190.0100.04912.39
5.4.180.0030.04312.39
5.4.170.0050.03612.39
5.4.160.0100.03212.39
5.4.150.0070.03512.39
5.4.140.0070.04112.07
5.4.130.0050.04712.05
5.4.120.0050.03612.02
5.4.110.0040.03612.01
5.4.100.0060.03512.02
5.4.90.0070.03712.01
5.4.80.0080.04912.02
5.4.70.0040.03712.01
5.4.60.0060.03712.00
5.4.50.0060.03612.01
5.4.40.0090.03512.00
5.4.30.0030.04612.00
5.4.20.0080.03412.00
5.4.10.0060.03411.99
5.4.00.0060.03511.48
5.3.290.0040.04112.80
5.3.280.0060.03812.71
5.3.270.0090.04412.72
5.3.260.0070.04012.72
5.3.250.0040.03912.72
5.3.240.0090.03312.72
5.3.230.0060.03812.71
5.3.220.0090.03612.68
5.3.210.0090.04212.68
5.3.200.0060.03812.68
5.3.190.0090.03712.68
5.3.180.0080.03512.67
5.3.170.0050.03812.67
5.3.160.0120.03112.67
5.3.150.0090.03512.68
5.3.140.0050.03912.66
5.3.130.0060.03912.66
5.3.120.0060.04012.65
5.3.110.0030.04012.66
5.3.100.0030.03912.13
5.3.90.0050.04112.11
5.3.80.0070.03512.11
5.3.70.0040.03812.11
5.3.60.0050.03712.09
5.3.50.0060.03412.03
5.3.40.0050.03612.03
5.3.30.0050.03611.99
5.3.20.0080.03511.77
5.3.10.0090.03911.74
5.3.00.0080.03411.73
5.2.170.0050.0349.23
5.2.160.0030.0309.23
5.2.150.0050.0319.23
5.2.140.0040.0319.22
5.2.130.0090.0259.18
5.2.120.0060.0279.19
5.2.110.0060.0289.19
5.2.100.0070.0269.18
5.2.90.0080.0279.18
5.2.80.0060.0299.18
5.2.70.0050.0309.18
5.2.60.0070.0289.14
5.2.50.0070.0319.11
5.2.40.0100.0319.09
5.2.30.0050.0319.06
5.2.20.0070.0309.05
5.2.10.0050.0348.94
5.2.00.0020.0428.80
5.1.60.0050.0238.09
5.1.50.0090.0218.09
5.1.40.0070.0308.06
5.1.30.0080.0328.41
5.1.20.0050.0318.43
5.1.10.0050.0358.16
5.1.00.0040.0288.16
5.0.50.0020.0226.64
5.0.40.0050.0206.50
5.0.30.0030.0326.30
5.0.20.0050.0186.27
5.0.10.0030.0216.25
5.0.00.0050.0326.25
4.4.90.0050.0184.78
4.4.80.0020.0164.75
4.4.70.0020.0174.76
4.4.60.0090.0144.75
4.4.50.0040.0154.77
4.4.40.0050.0244.71
4.4.30.0020.0204.75
4.4.20.0040.0154.84
4.4.10.0030.0154.85
4.4.00.0050.0284.76
4.3.110.0050.0134.67
4.3.100.0020.0164.67
4.3.90.0010.0174.63
4.3.80.0010.0264.58
4.3.70.0040.0144.63
4.3.60.0030.0154.63
4.3.50.0030.0164.62
4.3.40.0050.0224.53
4.3.30.0020.0163.30
4.3.20.0000.0183.27
4.3.10.0010.0173.24
4.3.00.0030.01713.95

preferences:
54.64 ms | 401 KiB | 5 Q