3v4l.org

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

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)
8.3.60.0040.01818.43
8.3.50.0120.02022.19
8.3.40.0120.00918.63
8.3.30.0030.02319.09
8.3.20.0080.00320.35
8.3.10.0040.00723.54
8.3.00.0060.00619.38
8.2.180.0070.02018.66
8.2.170.0070.02322.96
8.2.160.0060.01520.53
8.2.150.0060.00624.18
8.2.140.0040.00724.66
8.2.130.0000.01126.16
8.2.120.0030.00822.21
8.2.110.0080.00619.28
8.2.100.0090.00918.03
8.2.90.0080.00618.92
8.2.80.0040.01217.97
8.2.70.0040.01117.50
8.2.60.0030.01018.05
8.2.50.0000.01518.07
8.2.40.0030.01018.13
8.2.30.0050.00918.14
8.2.20.0000.01417.81
8.2.10.0000.01318.07
8.2.00.0070.00717.89
8.1.280.0160.01625.92
8.1.270.0060.00622.04
8.1.260.0060.00626.35
8.1.250.0040.00728.09
8.1.240.0030.01021.28
8.1.230.0070.01017.52
8.1.220.0000.01417.74
8.1.210.0040.01118.77
8.1.200.0060.00917.35
8.1.190.0000.01417.35
8.1.180.0140.00618.10
8.1.170.0000.01418.64
8.1.160.0000.01322.04
8.1.150.0030.01018.69
8.1.140.0000.01317.53
8.1.130.0040.01117.45
8.1.120.0030.01017.54
8.1.110.0000.01417.53
8.1.100.0030.01017.44
8.1.90.0000.01317.55
8.1.80.0070.00717.43
8.1.70.0060.00917.41
8.1.60.0060.00917.74
8.1.50.0060.00917.52
8.1.40.0070.00717.54
8.1.30.0070.00717.71
8.1.20.0040.01117.65
8.1.10.0040.01117.52
8.1.00.0000.01417.66
8.0.300.0040.01118.77
8.0.290.0000.01316.88
8.0.280.0030.01018.46
8.0.270.0100.00317.20
8.0.260.0070.00716.95
8.0.250.0040.00817.20
8.0.240.0060.00917.14
8.0.230.0040.00917.06
8.0.220.0060.00617.06
8.0.210.0030.01017.05
8.0.200.0030.01016.99
8.0.190.0030.01017.13
8.0.180.0030.01017.07
8.0.170.0040.01116.96
8.0.160.0080.00516.93
8.0.150.0000.01316.82
8.0.140.0000.01416.89
8.0.130.0060.00613.55
8.0.120.0000.01417.04
8.0.110.0000.01317.09
8.0.100.0080.00816.90
8.0.90.0030.01016.98
8.0.80.0030.02016.98
8.0.70.0060.00917.10
8.0.60.0030.01016.92
8.0.50.0000.01416.92
8.0.30.0100.02117.16
8.0.20.0080.02317.40
8.0.10.0030.01016.97
8.0.00.0080.02116.99
7.4.330.0000.01115.00
7.4.320.0000.01216.51
7.4.300.0030.01016.66
7.4.290.0000.01316.79
7.4.280.0000.01416.77
7.4.270.0030.01016.58
7.4.260.0030.01016.62
7.4.250.0030.01216.67
7.4.240.0020.01216.71
7.4.230.0000.01816.65
7.4.220.0100.01916.59
7.4.210.0130.01816.70
7.4.200.0000.01416.45
7.4.190.0000.01316.58
7.4.160.0040.03016.60
7.4.150.0090.02217.40
7.4.140.0110.02017.86
7.4.130.0060.02616.88
7.4.120.0080.01816.71
7.4.110.0130.02916.57
7.4.100.0100.02816.75
7.4.90.0060.02116.73
7.4.80.0030.02419.39
7.4.70.0090.01816.66
7.4.60.0060.02016.61
7.4.50.0030.01416.38
7.4.40.0000.02022.77
7.4.30.0120.01916.67
7.4.00.0060.01615.07
7.3.330.0040.00813.20
7.3.320.0040.00813.06
7.3.310.0080.00516.18
7.3.300.0030.01016.40
7.3.290.0090.02516.39
7.3.280.0090.02416.37
7.3.270.0070.02017.40
7.3.260.0120.01916.66
7.3.250.0110.02316.42
7.3.240.0160.01616.45
7.3.230.0100.01716.39
7.3.210.0100.01716.67
7.3.200.0070.02619.39
7.3.190.0090.01816.62
7.3.180.0070.02016.72
7.3.170.0120.01916.38
7.3.160.0150.02116.52
7.3.120.0090.01314.78
7.3.110.0090.01215.17
7.3.100.0070.01414.76
7.3.90.0030.01414.89
7.3.80.0060.01315.02
7.3.70.0030.01714.82
7.3.60.0100.01014.88
7.3.50.0040.01814.82
7.3.40.0030.01614.89
7.3.30.0060.01314.66
7.3.20.0060.01616.55
7.3.10.0090.00916.36
7.3.00.0000.01916.72
7.2.330.0090.01916.86
7.2.320.0090.01616.73
7.2.310.0030.02316.62
7.2.300.0100.01716.50
7.2.290.0070.01816.58
7.2.240.0120.01215.11
7.2.230.0070.01715.14
7.2.220.0000.02315.15
7.2.210.0070.01415.16
7.2.200.0110.01115.27
7.2.190.0070.01415.09
7.2.180.0000.02515.24
7.2.170.0140.01015.06
7.2.160.0100.01315.00
7.2.150.0000.02316.81
7.2.140.0150.00916.89
7.2.130.0040.01516.90
7.2.120.0030.01717.16
7.2.110.0070.01116.66
7.2.100.0040.01516.64
7.2.90.0030.01717.08
7.2.80.0070.01117.07
7.2.70.0040.01217.17
7.2.60.0080.01416.72
7.2.50.0100.01417.03
7.2.40.0030.01316.73
7.2.30.0060.01317.14
7.2.20.0070.01316.63
7.2.10.0040.01817.13
7.2.00.0100.01318.23
7.1.330.0060.01615.91
7.1.320.0100.01015.89
7.1.310.0030.02115.95
7.1.300.0070.01016.01
7.1.290.0030.02015.60
7.1.280.0040.01815.87
7.1.270.0060.00915.57
7.1.260.0070.01416.01
7.1.250.0030.02015.80
7.1.200.0070.01315.50
7.1.100.0040.02118.45
7.1.70.0070.00717.03
7.1.60.0100.03019.33
7.1.50.0030.03017.03
7.1.00.0030.09022.59
7.0.200.0310.01914.98
7.0.140.0000.08722.00
7.0.60.0130.08720.00
7.0.50.0100.06717.91
7.0.40.0070.05020.07
7.0.30.0500.07020.20
7.0.20.0370.08320.11
7.0.10.0270.06320.02
7.0.00.0030.10320.14
5.6.280.0000.13021.10
5.6.210.0030.07720.74
5.6.200.0070.11718.24
5.6.190.0030.07020.51
5.6.180.0170.07320.66
5.6.170.0300.11720.50
5.6.160.0130.11720.54
5.6.150.0000.11018.17
5.6.140.0100.06718.23
5.6.130.0130.12018.14
5.6.120.0130.11321.14
5.6.110.0100.10021.02
5.6.100.0030.09720.96
5.6.90.0070.10721.09
5.6.80.0100.08320.40
5.6.70.3970.08020.49
5.5.350.0100.12320.29
5.5.340.0100.10318.05
5.5.330.0030.12320.15
5.5.320.2930.06720.18
5.5.310.0270.11720.26
5.5.300.0070.10018.03
5.5.290.0130.10718.03
5.5.280.0070.06720.79
5.5.270.0030.13320.78
5.5.260.0000.07320.79
5.5.250.0070.08720.43
5.5.240.0200.12720.19
5.4.450.1000.10719.35
5.4.440.0370.09319.14
5.4.430.0170.09719.31
5.4.420.0270.09719.59
5.4.410.0470.10019.05
5.4.400.0300.08718.98
5.4.390.0330.10719.12
5.4.380.0200.11018.75
5.4.370.0330.13318.66
5.4.360.0300.10718.57
5.4.350.0300.10018.72
5.4.340.0370.10018.51
5.4.320.0080.06712.47
5.4.310.0100.07212.48
5.4.300.0070.06512.48
5.4.290.0050.06612.47
5.4.280.0060.07112.35
5.4.270.0140.07212.35
5.4.260.0140.08512.35
5.4.250.0070.10012.36
5.4.240.0070.07712.36
5.4.230.0090.07712.35
5.4.220.0120.07412.35
5.4.210.0080.07712.35
5.4.200.0080.07912.35
5.4.190.0060.07212.34
5.4.180.0140.09012.34
5.4.170.0100.11012.36
5.4.160.0160.10512.35
5.4.150.0150.10512.35
5.4.140.0140.12912.03
5.4.130.0120.10812.02
5.4.120.0260.16511.99
5.4.110.0220.16211.99
5.4.100.0210.13112.00
5.4.90.0090.10911.99
5.4.80.0180.11311.99
5.4.70.0060.12111.99
5.4.60.0130.11011.99
5.4.50.0090.10811.99
5.4.40.0090.09811.98
5.4.30.0100.10211.98
5.4.20.0090.10111.97
5.4.10.0080.10411.97
5.4.00.0080.12211.45
5.3.290.0060.07012.80
5.3.280.0080.10512.71
5.3.270.0090.10512.73
5.3.260.0120.09612.72
5.3.250.0110.08812.72
5.3.240.0110.11112.72
5.3.230.0130.11012.71
5.3.220.0090.09512.68
5.3.210.0090.13612.68
5.3.200.0090.07612.68
5.3.190.0120.07712.68
5.3.180.0110.09012.67
5.3.170.0120.11312.67
5.3.160.0140.12012.67
5.3.150.0200.12812.68
5.3.140.0120.09112.66
5.3.130.0140.10412.66
5.3.120.0160.08312.66
5.3.110.0100.10212.66
5.3.100.0130.14612.12
5.3.90.0120.12712.09
5.3.80.0110.09012.08
5.3.70.0100.09312.08
5.3.60.0090.05312.07
5.3.50.0190.06112.00
5.3.40.0140.07212.00
5.3.30.0150.06111.95
5.3.20.0100.06911.74
5.3.10.0210.08911.70
5.3.00.0500.13911.69
5.2.170.0180.1069.19
5.2.160.0130.1009.18
5.2.150.0250.1549.18
5.2.140.0090.0609.18
5.2.130.0120.0599.14
5.2.120.0080.0569.14
5.2.110.0120.0499.15
5.2.100.0100.0519.15
5.2.90.0180.0479.14
5.2.80.0220.0459.14
5.2.70.0110.0609.14
5.2.60.0090.0659.09
5.2.50.0110.0639.07
5.2.40.0080.0609.05
5.2.30.0200.05316.91
5.2.20.0160.04116.89
5.2.10.0160.0838.94
5.2.00.0120.0858.79
5.1.60.0090.2228.09
5.1.50.0130.1628.09
5.1.40.0160.2548.08
5.1.30.0200.2778.42
5.1.20.0110.2348.45
5.1.10.0240.3458.17
5.1.00.0090.2288.17
5.0.50.0070.1836.65
5.0.40.0080.1696.50
5.0.30.0150.2356.31
5.0.20.0050.1746.29
5.0.10.0100.1896.27
5.0.00.0050.2036.25
4.4.90.0040.1444.78
4.4.80.0200.02912.55
4.4.70.0080.02812.55
4.4.60.0290.05112.55
4.4.50.0030.1444.77
4.4.40.0080.1704.71
4.4.30.0050.1654.76
4.4.20.0100.2174.84
4.4.10.0080.1814.85
4.4.00.0100.1894.76
4.3.110.0040.0994.67
4.3.100.0060.1764.66
4.3.90.0180.3024.63
4.3.80.0140.1974.59
4.3.70.0090.2334.63
4.3.60.0060.1934.63
4.3.50.0090.1764.63
4.3.40.0080.1464.54
4.3.30.0060.1593.32
4.3.20.0030.1353.29
4.3.10.0030.1573.26
4.3.00.0230.10010.37

preferences:
37.44 ms | 401 KiB | 5 Q