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', '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)
8.3.40.0070.01418.93
8.3.30.0070.00719.27
8.3.20.0000.00820.16
8.3.10.0090.00020.62
8.3.00.0000.00819.36
8.2.170.0070.01422.96
8.2.160.0030.01020.46
8.2.150.0000.00824.18
8.2.140.0060.00324.66
8.2.130.0000.00826.16
8.2.120.0040.00421.11
8.2.110.0040.00422.08
8.2.100.0110.00017.97
8.2.90.0040.00419.22
8.2.80.0050.00317.97
8.2.70.0030.00617.63
8.2.60.0080.00018.01
8.2.50.0030.00618.07
8.2.40.0070.00418.22
8.2.30.0000.00719.53
8.2.20.0040.00417.73
8.2.10.0050.00318.19
8.2.00.0000.00718.01
8.1.270.0080.00023.99
8.1.260.0080.00026.35
8.1.250.0020.00528.09
8.1.240.0080.00023.91
8.1.230.0070.00318.94
8.1.220.0080.00017.74
8.1.210.0030.00518.77
8.1.200.0000.01217.35
8.1.190.0030.00517.35
8.1.180.0040.00418.10
8.1.170.0060.00318.48
8.1.160.0070.00022.02
8.1.150.0000.00818.84
8.1.140.0040.00417.64
8.1.130.0000.00719.38
8.1.120.0040.00417.61
8.1.110.0040.00417.58
8.1.100.0040.00417.50
8.1.90.0050.00217.59
8.1.80.0040.00417.53
8.1.70.0000.00717.62
8.1.60.0000.01017.65
8.1.50.0040.00417.65
8.1.40.0030.00517.66
8.1.30.0040.00417.63
8.1.20.0030.00517.83
8.1.10.0050.00317.71
8.1.00.0050.00217.59
8.0.300.0000.00819.09
8.0.290.0030.00616.88
8.0.280.0070.00018.35
8.0.270.0000.00717.27
8.0.260.0070.00016.93
8.0.250.0030.00317.07
8.0.240.0030.00317.00
8.0.230.0000.00717.07
8.0.220.0030.00517.09
8.0.210.0030.00317.04
8.0.200.0000.00817.04
8.0.190.0110.00016.98
8.0.180.0030.00317.00
8.0.170.0000.00817.06
8.0.160.0070.00016.96
8.0.150.0080.00017.07
8.0.140.0040.00417.04
8.0.130.0060.00313.52
8.0.120.0050.00217.00
8.0.110.0050.00217.02
8.0.100.0000.00717.11
8.0.90.0000.00817.12
8.0.80.0040.01116.96
8.0.70.0040.00417.00
8.0.60.0040.00416.83
8.0.50.0030.00617.11
8.0.30.0090.01017.13
8.0.20.0100.01017.46
8.0.10.0030.00517.12
8.0.00.0160.00517.00
7.4.330.0000.00615.04
7.4.320.0000.00816.82
7.4.300.0000.00616.67
7.4.290.0050.00316.66
7.4.280.0000.00816.81
7.4.270.0030.00316.66
7.4.260.0040.00416.80
7.4.250.0050.00316.68
7.4.240.0070.00016.73
7.4.230.0040.00416.66
7.4.220.0060.01116.86
7.4.210.0110.00316.73
7.4.200.0070.00016.73
7.4.160.0100.00716.63
7.4.150.0110.00717.40
7.4.140.0110.00717.86
7.4.130.0090.00816.74
7.4.120.0110.00716.81
7.4.110.0090.00916.84
7.4.100.0030.01616.70
7.4.90.0150.00316.70
7.4.80.0080.00819.39
7.4.70.0070.01016.84
7.4.60.0080.00916.86
7.4.50.0040.00416.49
7.4.40.0100.00716.72
7.4.30.0060.00916.46
7.4.00.0050.00815.18
7.3.330.0070.00013.28
7.3.320.0020.00213.31
7.3.310.0000.00716.46
7.3.300.0070.00016.50
7.3.290.0000.01416.36
7.3.280.0050.01116.42
7.3.270.0060.01217.40
7.3.260.0160.00616.71
7.3.250.0130.00416.63
7.3.240.0120.00916.41
7.3.230.0080.00816.83
7.3.210.0060.01216.63
7.3.200.0060.01119.39
7.3.190.0070.01016.68
7.3.180.0100.00616.55
7.3.170.0070.01116.56
7.3.160.0100.00616.61
7.3.120.0100.00614.63
7.3.110.0040.01414.95
7.3.100.0100.00615.00
7.3.90.0070.01015.13
7.3.80.0070.01114.95
7.3.70.0080.01114.89
7.3.60.0060.00914.97
7.3.50.0100.00315.17
7.3.40.0030.00615.04
7.3.30.0140.00415.07
7.3.20.0110.00416.87
7.3.10.0080.00516.64
7.3.00.0030.01216.79
7.2.330.0060.01816.88
7.2.320.0090.00916.78
7.2.310.0080.00816.62
7.2.300.0110.01116.83
7.2.290.0080.00816.63
7.2.250.0070.01115.31
7.2.240.0130.00715.40
7.2.230.0100.00714.93
7.2.220.0060.00915.00
7.2.210.0150.00315.18
7.2.200.0000.01315.10
7.2.190.0060.00815.29
7.2.180.0030.01415.14
7.2.170.0000.01115.24
7.2.130.0120.00317.17
7.2.120.0090.00616.82
7.2.110.0000.01417.05
7.2.100.0050.00517.16
7.2.90.0100.00317.03
7.2.80.0110.00316.91
7.2.70.0100.00316.57
7.2.60.0150.00317.17
7.2.50.0060.00917.08
7.2.40.0070.00716.90
7.2.30.0070.01017.17
7.2.20.0040.01417.07
7.2.10.0070.01017.07
7.2.00.0050.01018.35
7.1.330.0110.00315.92
7.1.320.0110.00316.21
7.1.310.0040.01415.77
7.1.300.0070.00715.98
7.1.290.0040.01115.98
7.1.280.0070.00715.69
7.1.270.0070.01015.94
7.1.260.0090.00016.09
7.1.250.0040.00415.80
7.1.100.0000.00818.40
7.1.70.0000.01817.10
7.1.60.0080.01519.61
7.1.50.0000.01117.20
7.1.00.0070.07722.41
7.0.200.0400.01014.75
7.0.140.0130.06022.12
7.0.60.0030.07720.02
7.0.50.0070.07717.88
7.0.40.0130.08020.14
7.0.30.0470.05320.21
7.0.20.0170.04020.32
7.0.10.0000.08320.26
7.0.00.0000.04720.07
5.6.280.0000.06720.82
5.6.210.0130.05020.57
5.6.200.0100.08718.18
5.6.190.0000.08720.61
5.6.180.0300.08020.79
5.6.170.0330.07320.47
5.6.160.0170.04720.46
5.6.150.0070.05018.16
5.6.140.0130.06718.18
5.6.130.0170.07718.13
5.6.120.0070.04720.94
5.6.110.0270.07021.12
5.6.100.0170.07021.02
5.6.90.0130.05021.09
5.6.80.0200.07020.40
5.5.350.0200.07320.45
5.5.340.0170.03018.09
5.5.330.0030.07320.40
5.5.320.0300.03320.19
5.5.310.0070.05020.23
5.5.300.0100.05717.91
5.5.290.0100.07717.97
5.5.280.0100.08020.77
5.5.270.0100.03320.86
5.5.260.0100.08320.78
5.5.250.0100.08320.63
5.5.240.0070.04020.07
5.4.450.0170.05019.48
5.4.440.0200.04719.20
5.4.430.0170.04319.19
5.4.420.0530.03719.29
5.4.410.0430.04719.43
5.4.400.0370.03718.95
5.4.390.0330.05019.09
5.4.380.0270.05718.74
5.4.370.0270.06018.79
5.4.360.0300.06018.75
5.4.350.0230.07018.79
5.4.340.0330.05318.73
5.4.320.0050.03712.50
5.4.310.0110.03412.50
5.4.300.0060.03612.50
5.4.290.0060.03912.50
5.4.280.0130.04612.40
5.4.270.0110.04712.40
5.4.260.0060.04412.40
5.4.250.0100.04912.39
5.4.240.0090.05112.40
5.4.230.0080.05512.39
5.4.220.0110.04612.39
5.4.210.0020.04012.39
5.4.200.0060.03912.39
5.4.190.0080.03612.38
5.4.180.0060.03612.38
5.4.170.0080.04312.39
5.4.160.0030.03812.39
5.4.150.0100.03212.39
5.4.140.0080.03712.07
5.4.130.0050.03912.06
5.4.120.0090.03712.02
5.4.110.0080.04912.01
5.4.100.0060.03912.01
5.4.90.0070.04012.01
5.4.80.0040.03912.01
5.4.70.0070.03912.01
5.4.60.0080.03312.01
5.4.50.0050.03812.00
5.4.40.0030.03912.00
5.4.30.0040.03811.99
5.4.20.0090.04811.99
5.4.10.0060.04511.99
5.4.00.0090.03211.48
5.3.290.0080.04112.80
5.3.280.0070.03912.71
5.3.270.0080.04112.72
5.3.260.0080.04912.72
5.3.250.0110.04612.72
5.3.240.0100.04412.72
5.3.230.0080.04512.70
5.3.220.0070.03712.68
5.3.210.0120.03412.68
5.3.200.0070.03712.68
5.3.190.0060.04112.68
5.3.180.0050.03812.67
5.3.170.0080.03512.67
5.3.160.0070.03612.67
5.3.150.0070.03612.67
5.3.140.0060.03712.66
5.3.130.0070.05512.65
5.3.120.0060.03912.66
5.3.110.0050.04012.66
5.3.100.0100.03912.13
5.3.90.0150.03312.11
5.3.80.0060.03512.11
5.3.70.0070.03512.10
5.3.60.0050.03612.09
5.3.50.0100.03212.03
5.3.40.0060.05112.03
5.3.30.0070.03611.99
5.3.20.0120.04011.77
5.3.10.0070.03511.74
5.3.00.0080.03511.73
5.2.170.0090.0279.23
5.2.160.0050.0329.23
5.2.150.0030.0339.23
5.2.140.0050.0319.22
5.2.130.0040.0299.19
5.2.120.0060.0279.19
5.2.110.0050.0299.19
5.2.100.0080.0269.18
5.2.90.0090.0259.18
5.2.80.0050.0359.18
5.2.70.0090.0269.18
5.2.60.0060.0299.14
5.2.50.0060.0309.11
5.2.40.0090.0319.09
5.2.30.0060.0409.06
5.2.20.0090.0389.05
5.2.10.0060.0378.94
5.2.00.0050.0328.80
5.1.60.0070.0228.09
5.1.50.0070.0238.09
5.1.40.0040.0268.06
5.1.30.0070.0238.42
5.1.20.0060.0268.43
5.1.10.0030.0288.16
5.1.00.0040.0278.16
5.0.50.0060.0196.63
5.0.40.0040.0196.50
5.0.30.0050.0306.31
5.0.20.0050.0186.27
5.0.10.0050.0186.26
5.0.00.0050.0296.25
4.4.90.0040.0144.78
4.4.80.0050.0134.75
4.4.70.0050.0134.75
4.4.60.0010.0214.76
4.4.50.0060.0124.77
4.4.40.0030.0264.71
4.4.30.0060.0134.76
4.4.20.0050.0144.85
4.4.10.0010.0184.85
4.4.00.0020.0264.76
4.3.110.0020.0164.67
4.3.100.0000.0174.67
4.3.90.0030.0204.64
4.3.80.0040.0234.58
4.3.70.0020.0154.63
4.3.60.0010.0164.62
4.3.50.0040.0154.63
4.3.40.0040.0284.53
4.3.30.0050.0153.30
4.3.20.0020.0163.28
4.3.10.0030.0153.24
4.3.00.0000.01313.95

preferences:
37.88 ms | 400 KiB | 5 Q