3v4l.org

run code in 300+ PHP versions simultaneously
<?php function x($value, $pattern) { $v1 = preg_match("\x01^($pattern)\\z\x01u", $value); echo "1) $value = " . ($v1 ? "A":"N") . "\n"; $v2 = preg_match("#($pattern)#", $value); echo "2) $value = " . ($v2 ? "A":"N") . "\n"; echo $v1 != $v2 ? "!!! mismatch\n---\n" : "----\n"; } x("xaaax", '(.)\1{2,}'); x("xaaax", '(.)\2{2,}'); x("xaaax", '(?:(.)\1{2,})'); x("xaaax", '(?:(.)\2{2,})');

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)
8.3.60.0060.01218.55
8.3.50.0210.00522.11
8.3.40.0110.00718.83
8.3.30.0090.00618.77
8.3.20.0080.00020.34
8.3.10.0080.00020.65
8.3.00.0040.00423.52
8.2.180.0070.01416.63
8.2.170.0170.00322.96
8.2.160.0160.00022.25
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00319.39
8.2.120.0080.00026.35
8.2.110.0030.00622.20
8.2.100.0000.01117.80
8.2.90.0040.00419.26
8.2.80.0030.00617.97
8.2.70.0040.00417.75
8.2.60.0000.00917.80
8.2.50.0040.00418.09
8.2.40.0000.00820.52
8.2.30.0000.00819.63
8.2.20.0000.00817.93
8.2.10.0040.00418.04
8.2.00.0040.00418.00
8.1.280.0090.00925.92
8.1.270.0100.00722.31
8.1.260.0050.00328.09
8.1.250.0050.00228.09
8.1.240.0000.00922.54
8.1.230.0100.00317.95
8.1.220.0000.00917.79
8.1.210.0000.00818.77
8.1.200.0070.00317.60
8.1.190.0080.00017.48
8.1.180.0090.00018.10
8.1.170.0030.00718.75
8.1.160.0000.00720.75
8.1.150.0040.00420.75
8.1.140.0000.00919.66
8.1.130.0040.00417.74
8.1.120.0020.00517.50
8.1.110.0000.00717.65
8.1.100.0040.00817.63
8.1.90.0080.00017.56
8.1.80.0070.00017.61
8.1.70.0050.00217.66
8.1.60.0000.00817.65
8.1.50.0040.00417.72
8.1.40.0080.00017.79
8.1.30.0030.00617.84
8.1.20.0040.00417.66
8.1.10.0030.00617.71
8.1.00.0000.00817.66
8.0.300.0000.00718.77
8.0.290.0000.00717.13
8.0.280.0030.00518.52
8.0.270.0060.00317.25
8.0.260.0000.00817.35
8.0.250.0040.00417.22
8.0.240.0000.00717.20
8.0.230.0080.00017.05
8.0.220.0040.00417.18
8.0.210.0000.00717.04
8.0.200.0060.00017.19
8.0.190.0000.00717.27
8.0.180.0000.00817.17
8.0.170.0080.00017.14
8.0.160.0070.00016.99
8.0.150.0000.00717.13
8.0.140.0020.00517.16
8.0.130.0060.00013.54
8.0.120.0030.00617.09
8.0.110.0040.00417.18
8.0.100.0030.00517.05
8.0.90.0000.00817.02
8.0.80.0090.00917.15
8.0.70.0030.00517.05
8.0.60.0000.00717.22
8.0.50.0000.00717.16
8.0.30.0110.00817.22
8.0.20.0120.00817.51
8.0.10.0040.00417.17
8.0.00.0080.00917.09
7.4.330.0000.00516.69
7.4.320.0000.00616.76
7.4.300.0030.00316.73
7.4.290.0060.00616.69
7.4.280.0070.00016.79
7.4.270.0030.00516.88
7.4.260.0080.00016.74
7.4.250.0030.00516.81
7.4.240.0040.00416.79
7.4.230.0030.00316.67
7.4.220.0070.01116.92
7.4.210.0070.01016.89
7.4.200.0040.00416.71
7.4.160.0080.00816.75
7.4.150.0080.01217.40
7.4.140.0120.00617.86
7.4.130.0110.00816.63
7.4.120.0110.00916.96
7.4.110.0110.00716.71
7.4.100.0080.01116.80
7.4.90.0090.00916.82
7.4.80.0110.01519.39
7.4.70.0100.00716.61
7.4.60.0100.00716.59
7.4.50.0030.01216.63
7.4.40.0150.00316.77
7.4.30.0080.00816.66
7.4.00.0140.00315.27
7.3.330.0000.00713.57
7.3.320.0030.00313.38
7.3.310.0030.00316.54
7.3.300.0030.00416.67
7.3.290.0100.00916.63
7.3.280.0090.00816.60
7.3.270.0130.00517.40
7.3.260.0090.00916.54
7.3.250.0080.01016.72
7.3.240.0060.01116.61
7.3.230.0110.00816.88
7.3.210.0130.00316.82
7.3.200.0140.00416.75
7.3.190.0150.00316.61
7.3.180.0100.00716.69
7.3.170.0140.00816.80
7.3.160.0150.00316.96
7.3.120.0070.01017.15
7.3.110.0070.01017.15
7.3.100.0060.01017.15
7.3.90.0040.01117.15
7.3.80.0110.00317.15
7.3.70.0070.01017.15
7.3.60.0100.00317.15
7.3.50.0030.00617.15
7.3.40.0000.01517.15
7.3.30.0090.00617.15
7.3.20.0070.01117.15
7.3.10.0060.00617.15
7.3.00.0040.00817.15
7.2.330.0060.01316.93
7.2.320.0140.00316.83
7.2.310.0060.01116.81
7.2.300.0070.01116.93
7.2.290.0120.01216.95
7.2.240.0040.00717.15
7.2.230.0070.00717.15
7.2.220.0030.01017.15
7.2.210.0090.00617.15
7.2.200.0000.01117.15
7.2.190.0030.01017.15
7.2.180.0100.00717.15
7.2.170.0110.00717.15
7.2.160.0030.01517.15
7.2.150.0060.00617.15
7.2.140.0120.00417.15
7.2.130.0090.00317.15
7.2.120.0060.00617.15
7.2.110.0040.00717.15
7.2.100.0000.01317.15
7.2.90.0030.00717.15
7.2.80.0060.00617.15
7.2.70.0040.01117.29
7.2.60.0100.00517.19
7.2.50.0060.00317.15
7.2.40.0000.01717.15
7.2.30.0000.01417.15
7.2.20.0080.00617.15
7.2.10.0110.00417.15
7.2.00.0100.00717.15
7.1.330.0030.01317.15
7.1.320.0110.00417.15
7.1.310.0060.00917.15
7.1.300.0000.01317.15
7.1.290.0060.00617.15
7.1.280.0060.00817.15
7.1.270.0000.01617.15
7.1.260.0070.00717.15
7.1.250.0030.01017.15
7.1.200.0100.00315.97
7.1.70.0000.00817.22
7.1.60.0090.01619.19
7.1.50.0040.01817.16
7.1.00.0000.08022.48
7.0.200.0830.01014.91
7.0.60.0200.06721.74
7.0.50.0100.03317.75
7.0.40.0030.08720.14
7.0.30.0200.07020.16
7.0.20.0330.07320.33
7.0.10.0100.04020.36
7.0.00.0030.06320.09
5.6.280.0100.06721.04
5.6.210.0130.07720.68
5.6.200.0030.07318.12
5.6.190.0100.07720.63
5.6.180.0230.04320.42
5.6.170.0300.06020.48
5.6.160.0130.07320.55
5.6.150.0070.08318.29
5.6.140.0130.03018.17
5.6.130.0030.08318.18
5.6.120.0030.05021.12
5.6.110.0070.05020.99
5.6.100.0100.05021.15
5.6.90.0000.05020.97
5.6.80.0130.08020.36
5.5.350.0330.07720.39
5.5.340.0130.07317.92
5.5.330.0130.07720.21
5.5.320.0500.05320.36
5.5.310.0370.07320.34
5.5.300.0100.07017.97
5.5.290.0070.04717.99
5.5.280.0100.07720.90
5.5.270.0070.08720.73
5.5.260.0000.04320.96
5.5.250.0130.08020.59
5.5.240.0070.05320.13

preferences:
34.05 ms | 401 KiB | 5 Q