3v4l.org

run code in 300+ PHP versions simultaneously
<?php $regex = '/(((?!a).)*)*a\\{/'; $test_string = 'AAAAAAAAAAAAAA{AA'; echo "1:".mb_ereg_replace($regex,'WORKED',$test_string)."\n"; echo "2:".preg_replace($regex.'u','WORKED',$test_string)."\n"; echo "3:".preg_replace($regex,'WORKED',$test_string)."\n";

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)
8.3.60.0230.01016.75
8.3.50.0100.01922.19
8.3.40.0070.02319.00
8.3.30.0100.01719.09
8.3.20.0040.00820.29
8.3.10.0080.00423.79
8.3.00.0060.00619.63
8.2.180.0100.01718.42
8.2.170.0090.01222.96
8.2.160.0070.01820.31
8.2.150.0090.00324.18
8.2.140.0060.00624.66
8.2.130.0040.00826.16
8.2.120.0060.00622.45
8.2.110.0070.00721.21
8.2.100.0040.01618.09
8.2.90.0000.01419.35
8.2.80.0060.00917.97
8.2.70.0040.01117.75
8.2.60.0060.00817.93
8.2.50.0000.01418.07
8.2.40.0030.01018.22
8.2.30.0030.01018.12
8.2.20.0000.01318.01
8.2.10.0000.01318.06
8.2.00.0040.01417.95
8.1.280.0130.02225.92
8.1.270.0070.00721.98
8.1.260.0000.01226.35
8.1.250.0040.00728.09
8.1.240.0100.00322.27
8.1.230.0070.01019.00
8.1.220.0090.00917.77
8.1.210.0000.01718.77
8.1.200.0060.00917.35
8.1.190.0070.00717.35
8.1.180.0060.01018.10
8.1.170.0080.00518.77
8.1.160.0000.01322.03
8.1.150.0000.01318.95
8.1.140.0070.00717.68
8.1.130.0000.01317.86
8.1.120.0030.01017.73
8.1.110.0030.01017.70
8.1.100.0060.00817.76
8.1.90.0000.01317.69
8.1.80.0000.01317.68
8.1.70.0000.01417.66
8.1.60.0040.01117.82
8.1.50.0060.00917.66
8.1.40.0060.01017.75
8.1.30.0040.01117.89
8.1.20.0030.01217.95
8.1.10.0050.00817.69
8.1.00.0030.01017.82
8.0.300.0030.01020.21
8.0.290.0000.01317.00
8.0.280.0040.00818.54
8.0.270.0030.01017.39
8.0.260.0000.01217.31
8.0.250.0000.01317.31
8.0.240.0060.00917.21
8.0.230.0030.01017.22
8.0.220.0000.01317.21
8.0.210.0040.00817.11
8.0.200.0030.01017.23
8.0.190.0040.01117.27
8.0.180.0000.01517.13
8.0.170.0030.01217.21
8.0.160.0030.01017.23
8.0.150.0030.01017.16
8.0.140.0000.01417.18
8.0.130.0030.00913.63
8.0.120.0000.01417.25
8.0.110.0000.01317.21
8.0.100.0000.01417.11
8.0.90.0070.00717.16
8.0.80.0030.02117.16
8.0.70.0030.01117.02
8.0.60.0000.01417.20
8.0.50.0030.01017.25
8.0.30.0100.02017.29
8.0.20.0110.01717.54
8.0.10.0070.00717.05
8.0.00.0110.02016.87
7.4.330.0040.00715.00
7.4.320.0000.01316.78
7.4.300.0000.01216.70
7.4.290.0030.01016.67
7.4.280.0070.00716.71
7.4.270.0070.00716.77
7.4.260.0070.00716.84
7.4.250.0060.00916.71
7.4.240.0020.01216.80
7.4.230.0030.01016.67
7.4.220.0100.01916.83
7.4.210.0070.02016.81
7.4.200.0000.01416.97
7.4.190.0030.01016.94
7.4.160.0060.01916.63
7.4.150.0100.02917.40
7.4.140.0050.02417.86
7.4.130.0070.02016.81
7.4.120.0100.01816.85
7.4.110.0120.01816.77
7.4.100.0120.02516.77
7.4.90.0130.01716.93
7.4.80.0160.02119.39
7.4.70.0110.01516.67
7.4.60.0100.01716.73
7.4.50.0030.01416.64
7.4.40.0110.01422.77
7.4.30.0130.01316.70
7.4.00.0060.01615.29
7.3.330.0030.01013.36
7.3.320.0030.00913.38
7.3.310.0070.00716.49
7.3.300.0030.01016.53
7.3.290.0080.01916.54
7.3.280.0110.02016.57
7.3.270.0140.01317.40
7.3.260.0040.02516.79
7.3.250.0100.01716.64
7.3.240.0120.01816.70
7.3.230.0100.01716.56
7.3.210.0100.01616.90
7.3.200.0060.02419.39
7.3.190.0030.03316.68
7.3.180.0120.01916.36
7.3.170.0140.01416.74
7.3.160.0030.02416.47
7.3.120.0070.01414.91
7.3.10.0030.01716.95
7.3.00.0080.01117.03
7.2.330.0030.02416.92
7.2.320.0100.01716.64
7.2.310.0070.01816.75
7.2.300.0100.01616.91
7.2.290.0130.01316.89
7.2.130.0000.01817.14
7.2.120.0030.02017.00
7.2.110.0100.01417.05
7.2.100.0030.01917.18
7.2.90.0000.02417.03
7.2.80.0060.01017.15
7.2.70.0060.01317.16
7.2.60.0090.01217.11
7.2.50.0000.02016.97
7.2.40.0060.01017.02
7.2.30.0000.02216.92
7.2.20.0070.01117.24
7.2.10.0060.01917.20
7.2.00.0040.01817.14
7.1.250.0060.01315.94
7.1.200.0070.01415.90
7.1.100.0000.01618.34
7.1.70.0000.01417.01
7.1.60.0140.02419.33
7.1.50.0070.02317.23
7.1.00.0100.07722.54
7.0.200.0210.01715.21
7.0.140.0030.08722.02
7.0.100.0100.07720.03
7.0.90.0130.04720.00
7.0.80.0230.04319.90
7.0.70.0070.04319.85
7.0.60.0030.05319.96
7.0.50.0300.04720.34
7.0.40.0070.08320.13
7.0.30.0030.05720.13
7.0.20.0000.04720.13
7.0.10.0030.06320.14
7.0.00.0030.08320.18
5.6.280.0070.12320.82
5.6.250.0030.07720.71
5.6.240.0070.07020.51
5.6.230.0000.07320.65
5.6.220.0000.07320.61
5.6.210.0070.06720.46
5.6.200.0070.09321.04
5.6.190.0230.10721.07
5.6.180.0070.11721.13
5.6.170.0130.11021.07
5.6.160.0070.08721.13
5.6.150.0100.11721.01
5.6.140.0070.12021.13
5.6.130.0030.12321.10
5.6.120.0070.11720.99
5.6.110.0100.08021.03
5.6.100.0000.10320.96
5.6.90.0100.10021.04
5.6.80.0000.07320.33
5.6.70.0070.10320.42
5.6.60.0070.08020.41
5.6.50.0000.09320.45
5.6.40.0230.07720.48
5.6.30.0100.06320.46
5.6.20.0130.11020.30
5.6.10.0030.12020.42
5.6.00.0130.09020.27
5.5.380.0070.07720.41
5.5.370.0030.10020.36
5.5.360.0070.06720.55
5.5.350.0100.12020.42
5.5.340.0070.09320.87
5.5.330.0130.10020.91
5.5.320.0070.11020.77
5.5.310.0030.10720.91
5.5.300.0130.10320.93
5.5.290.0030.09320.82
5.5.280.0070.13020.91
5.5.270.0070.09020.90
5.5.260.0000.09020.86
5.5.250.0030.12020.73
5.5.240.0000.11020.15
5.5.230.0200.10320.21
5.5.220.0130.11720.20
5.5.210.0100.10720.10
5.5.200.0170.11320.21
5.5.190.0130.10720.27
5.5.180.0070.12020.14
5.5.160.0030.08320.14
5.5.150.0170.10320.25
5.5.140.0070.08319.94
5.5.130.0100.11720.18
5.5.120.0070.10720.20
5.5.110.0170.07320.22
5.5.100.0030.12320.00
5.5.90.0000.12720.14
5.5.80.0070.12320.04
5.5.70.0030.10720.15
5.5.60.0100.12020.10
5.5.50.0030.11720.05
5.5.40.0130.10720.07
5.5.30.0230.10719.94
5.5.20.0070.12020.04
5.5.10.0130.11720.02
5.5.00.0130.11020.05
5.4.450.0130.11319.58
5.4.440.0200.06319.33
5.4.430.0130.08719.45
5.4.420.0000.09719.41
5.4.410.0100.11019.12
5.4.400.0100.11319.09
5.4.390.0100.10719.26
5.4.380.0070.11019.14
5.4.370.0070.11019.05
5.4.360.0170.08318.97
5.4.350.0100.10019.07
5.4.340.0030.08718.84
5.4.320.0070.06019.05
5.4.310.0070.10319.10
5.4.300.0100.10018.93
5.4.290.0070.10319.16
5.4.280.0100.09319.05
5.4.270.0100.09319.05
5.4.260.0070.10319.17
5.4.250.0100.10718.83
5.4.240.0100.10019.05
5.4.230.0030.06318.91
5.4.220.0130.10319.08
5.4.210.0070.10019.25
5.4.200.0100.09719.00
5.4.190.0030.07019.14
5.4.180.0030.10719.09
5.4.170.0070.10319.05
5.4.160.0100.08319.06
5.4.150.0030.11719.17
5.4.140.0070.10716.33
5.4.130.0070.07316.39
5.4.120.0030.11316.29
5.4.110.0100.10016.39
5.4.100.0130.11016.51
5.4.90.0030.08316.34
5.4.80.0100.07016.30
5.4.70.0030.07716.40
5.4.60.0070.11016.20
5.4.50.0100.10716.27
5.4.40.0030.12016.29
5.4.30.0000.09016.20
5.4.20.0030.11316.30
5.4.10.0100.09716.23
5.4.00.0100.10315.71
5.3.290.0000.06714.68
5.3.280.0100.11714.55
5.3.270.0030.08314.58
5.3.260.0070.12314.62
5.3.250.0100.11014.62
5.3.240.0030.10014.64
5.3.230.0230.10314.53
5.3.220.0100.09714.56
5.3.210.0130.08314.47
5.3.200.0030.10714.52
5.3.190.0070.10714.62
5.3.180.0100.11014.45
5.3.170.0100.10714.57
5.3.160.0070.11014.47
5.3.150.0070.06014.61
5.3.140.0100.08714.57
5.3.130.0000.06314.59
5.3.120.0100.05314.46
5.3.110.0070.10714.58
5.3.100.0070.11314.08
5.3.90.0070.08314.04
5.3.80.0070.10014.02
5.3.70.0030.10013.98
5.3.60.0000.06714.04
5.3.50.0100.07313.98
5.3.40.0130.04713.82
5.3.30.0100.07313.94
5.3.20.0170.06713.66
5.3.10.0070.07013.64
5.3.00.0070.04313.64
5.2.170.0100.06011.09
5.2.160.0030.06710.96
5.2.150.0070.06311.03
5.2.140.0030.06310.95
5.2.130.0070.06311.08
5.2.120.0100.06311.15
5.2.110.0000.05310.97
5.2.100.0070.06010.99
5.2.90.0000.04310.99
5.2.80.0030.03711.10
5.2.70.0070.05711.17
5.2.60.0070.06710.91
5.2.50.0070.06311.06
5.2.40.0000.04311.08
5.2.30.0070.05718.59
5.2.20.0070.06318.75
5.2.10.0070.06010.82
5.2.00.0000.05710.79
5.1.60.0100.14010.04
5.1.50.0000.11010.04
5.1.40.0100.12010.04
5.1.30.0070.14710.42
5.1.20.0070.09710.39
5.1.10.0070.10310.10
5.1.00.0100.13010.13
5.0.50.0000.1338.60
5.0.40.0000.0778.44
5.0.30.0100.1378.28
5.0.20.0000.1208.29
5.0.10.0030.1208.28
5.0.00.0030.1078.29
4.4.90.0000.0908.18
4.4.80.0170.00713.71
4.4.70.0070.03713.74
4.4.60.0030.02013.66
4.4.50.0000.1278.18
4.4.40.0000.1438.18
4.4.30.0000.1308.18
4.4.20.0070.1308.18
4.4.10.0100.1108.18
4.4.00.0030.1638.18
4.3.110.0030.0908.18
4.3.100.0000.0908.18
4.3.90.0000.0938.18
4.3.80.0030.1208.18
4.3.70.0070.1078.18
4.3.60.0070.0778.18
4.3.50.0000.0938.18
4.3.40.0030.1408.18
4.3.30.0030.0208.18
4.3.20.0070.0308.18
4.3.10.0000.0338.18
4.3.00.0000.0378.18

preferences:
43.99 ms | 401 KiB | 5 Q