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)
8.3.40.0140.00718.84
8.3.30.0030.02419.04
8.3.20.0040.00720.29
8.3.10.0040.00723.61
8.3.00.0060.00619.38
8.2.170.0070.01422.96
8.2.160.0100.01020.52
8.2.150.0040.00724.18
8.2.140.0080.00324.66
8.2.130.0080.00426.16
8.2.120.0070.00422.35
8.2.110.0040.01122.41
8.2.100.0000.01718.09
8.2.90.0030.01019.36
8.2.80.0030.01018.05
8.2.70.0070.00717.75
8.2.60.0030.01118.05
8.2.50.0070.00718.07
8.2.40.0090.00618.34
8.2.30.0030.01018.21
8.2.20.0000.01317.84
8.2.10.0100.00318.20
8.2.00.0120.00917.96
8.1.270.0080.00423.89
8.1.260.0040.00826.35
8.1.250.0030.00928.09
8.1.240.0030.01023.97
8.1.230.0090.00919.16
8.1.220.0070.00717.74
8.1.210.0070.00718.77
8.1.200.0060.00917.48
8.1.190.0030.01017.64
8.1.180.0130.01118.10
8.1.170.0040.00918.94
8.1.160.0000.01322.22
8.1.150.0030.01018.91
8.1.140.0070.00717.65
8.1.130.0030.01017.92
8.1.120.0040.00917.70
8.1.110.0000.01317.73
8.1.100.0000.01417.75
8.1.90.0030.01017.69
8.1.80.0030.01017.73
8.1.70.0060.00617.66
8.1.60.0030.01017.80
8.1.50.0000.01617.85
8.1.40.0030.01017.78
8.1.30.0040.01117.86
8.1.20.0030.01017.86
8.1.10.0040.01117.72
8.1.00.0070.00717.65
8.0.300.0000.01618.77
8.0.290.0070.00717.30
8.0.280.0030.01018.60
8.0.270.0070.00717.36
8.0.260.0000.01317.41
8.0.250.0040.01017.29
8.0.240.0060.00917.24
8.0.230.0070.00717.27
8.0.220.0070.00717.27
8.0.210.0030.00917.27
8.0.200.0040.00817.26
8.0.190.0030.01017.25
8.0.180.0070.00717.28
8.0.170.0000.01417.24
8.0.160.0030.01017.25
8.0.150.0030.01017.04
8.0.140.0030.01017.09
8.0.130.0060.00613.75
8.0.120.0000.01417.19
8.0.110.0030.01017.21
8.0.100.0070.00717.12
8.0.90.0000.01417.25
8.0.80.0030.02117.17
8.0.70.0000.01417.30
8.0.60.0080.00517.14
8.0.50.0030.01017.28
8.0.30.0120.01817.46
8.0.20.0100.01917.40
8.0.10.0080.00517.14
8.0.00.0080.02516.97
7.4.330.0040.00815.21
7.4.320.0040.00816.72
7.4.300.0070.00716.78
7.4.290.0000.01316.68
7.4.280.0030.01016.71
7.4.270.0070.00716.77
7.4.260.0000.01416.84
7.4.250.0080.00516.89
7.4.240.0020.01116.82
7.4.230.0070.00716.68
7.4.220.0000.02816.75
7.4.210.0060.02216.90
7.4.200.0000.01416.63
7.4.190.0030.01016.71
7.4.160.0100.01716.89
7.4.150.0160.01017.40
7.4.140.0110.02017.86
7.4.130.0060.02316.63
7.4.120.0080.02016.76
7.4.110.0120.01516.74
7.4.100.0130.01716.90
7.4.90.0170.01416.84
7.4.80.0160.02219.39
7.4.70.0110.01416.81
7.4.60.0040.02816.64
7.4.50.0030.01516.61
7.4.40.0030.02022.77
7.4.30.0090.01816.64
7.4.10.0130.01615.06
7.4.00.0030.01915.38
7.3.330.0000.01113.42
7.3.320.0000.01113.39
7.3.310.0040.01116.62
7.3.300.0030.01016.50
7.3.290.0100.02016.69
7.3.280.0120.02116.57
7.3.270.0100.02017.40
7.3.260.0160.01616.80
7.3.250.0150.01616.78
7.3.240.0100.02416.78
7.3.230.0120.01516.48
7.3.210.0120.01516.77
7.3.200.0060.02119.39
7.3.190.0110.01516.77
7.3.180.0070.01816.40
7.3.170.0040.02116.70
7.3.160.0070.01916.50
7.3.120.0090.01715.20
7.3.110.0070.02314.73
7.3.100.0030.01615.01
7.3.90.0000.02415.27
7.3.80.0090.01215.17
7.3.70.0060.01515.23
7.3.60.0100.01314.72
7.3.50.0060.02314.95
7.3.40.0060.02215.02
7.3.30.0070.00715.02
7.3.20.0070.01716.71
7.3.10.0070.01816.94
7.3.00.0100.00616.98
7.2.330.0030.02416.75
7.2.320.0120.02516.55
7.2.310.0050.02016.70
7.2.300.0140.01216.83
7.2.290.0100.01716.70
7.2.250.0160.01315.19
7.2.240.0100.01715.27
7.2.230.0030.01214.95
7.2.220.0030.02015.39
7.2.210.0030.01415.04
7.2.200.0060.01215.23
7.2.190.0100.01415.33
7.2.180.0030.02015.19
7.2.170.0060.01515.15
7.2.160.0040.02214.82
7.2.150.0040.01916.85
7.2.140.0040.02517.18
7.2.130.0080.01417.09
7.2.120.0000.02516.93
7.2.110.0060.01517.10
7.2.100.0030.01716.82
7.2.90.0040.02317.09
7.2.80.0040.01916.96
7.2.70.0030.01917.14
7.2.60.0050.01517.01
7.2.50.0000.02516.98
7.2.40.0060.01817.04
7.2.30.0140.01117.19
7.2.20.0060.01917.20
7.2.10.0070.01717.17
7.2.00.0110.01118.37
7.1.330.0070.01515.82
7.1.320.0000.02116.23
7.1.310.0000.01516.15
7.1.300.0060.01615.87
7.1.290.0070.01615.67
7.1.280.0070.01316.09
7.1.270.0070.01316.00
7.1.260.0030.01315.56
7.1.250.0030.01415.74
7.1.240.0030.01616.08
7.1.230.0070.01416.10
7.1.220.0070.01415.67
7.1.210.0070.01015.75
7.1.200.0060.01515.86
7.1.190.0070.01315.83
7.1.180.0100.01015.89
7.1.170.0040.01415.97
7.1.160.0030.01515.92
7.1.150.0000.01715.77
7.1.140.0000.01716.04
7.1.130.0030.01415.88
7.1.120.0100.01015.87
7.1.110.0030.01115.98
7.1.100.0030.01217.06
7.1.90.0070.01316.10
7.1.80.0100.01015.87
7.1.70.0060.01016.69
7.1.60.0020.03017.66
7.1.50.0050.01816.63
7.1.40.0040.01515.64
7.1.30.0000.02116.05
7.1.20.0070.01415.93
7.1.10.0150.00615.83
7.1.00.0020.05019.12
7.0.330.0060.00915.55
7.0.320.0070.01015.75
7.0.310.0120.00915.72
7.0.300.0030.01915.57
7.0.290.0040.01115.72
7.0.280.0040.01415.32
7.0.270.0030.01715.49
7.0.260.0070.01315.63
7.0.250.0030.01315.66
7.0.240.0070.01415.44
7.0.230.0030.01615.50
7.0.220.0030.01415.38
7.0.210.0160.00315.59
7.0.200.0160.01415.36
7.0.190.0060.01315.67
7.0.180.0070.01015.82
7.0.170.0000.02215.56
7.0.160.0000.02015.59
7.0.150.0040.01815.71
7.0.140.0050.04618.77
7.0.130.0070.02115.68
7.0.120.0040.01415.60
7.0.110.0000.02015.69
7.0.100.0040.01815.80
7.0.90.0070.04317.83
7.0.80.0090.03217.84
7.0.70.0030.03417.64
7.0.60.0070.02917.72
7.0.50.0030.05818.02
7.0.40.0030.03417.00
7.0.30.0080.05616.86
7.0.20.0030.03316.91
7.0.10.0080.04616.85
7.0.00.0030.05816.82
5.6.400.0100.07614.18
5.6.390.0000.08514.60
5.6.380.0030.07314.60
5.6.370.0030.07514.48
5.6.360.0100.07214.25
5.6.350.0070.08114.55
5.6.340.0000.08314.66
5.6.330.0030.08014.07
5.6.320.0030.07414.55
5.6.310.0030.07914.54
5.6.300.0100.07114.48
5.6.290.0030.08014.32
5.6.280.0100.10017.76
5.6.270.0030.08514.64
5.6.260.0130.06614.42
5.6.250.0000.07714.54
5.6.240.0000.08614.49
5.6.230.0080.07417.53
5.6.220.0070.08217.66
5.6.210.0080.09517.56
5.6.200.0030.08517.83
5.6.190.0030.09817.73
5.6.180.0070.10217.66
5.6.170.0050.10417.64
5.6.160.0120.10317.58
5.6.150.0070.07817.75
5.6.140.0100.07717.60
5.6.130.0120.09917.65
5.6.120.0050.07717.71
5.6.110.0050.07517.80
5.6.100.0120.08517.63
5.6.90.0080.07317.63
5.6.80.0080.09217.31
5.6.70.0080.09517.39
5.6.60.0050.08117.20
5.6.50.0070.09117.30
5.6.40.0050.08617.38
5.6.30.0070.09017.48
5.6.20.0030.10017.36
5.6.10.0050.09917.47
5.6.00.0020.08017.50
5.5.380.0030.08314.40
5.5.370.0030.07617.39
5.5.360.0100.10017.29
5.5.350.0030.07617.47
5.5.340.0080.08217.50
5.5.330.0100.07317.61
5.5.320.0100.09917.62
5.5.310.0050.10417.55
5.5.300.0070.08117.59
5.5.290.0120.09517.71
5.5.280.0050.09717.35
5.5.270.0080.08217.53
5.5.260.0030.09817.57
5.5.250.0030.11017.33
5.5.240.0070.07717.12
5.5.230.0050.07617.20
5.5.220.0070.09517.31
5.5.210.0080.09317.14
5.5.200.0120.08717.27
5.5.190.0120.09617.25
5.5.180.0120.10117.13
5.5.170.0030.07814.28
5.5.160.0130.09417.27
5.5.150.0120.09217.36
5.5.140.0070.10217.26
5.5.130.0100.07117.19
5.5.120.0050.09717.32
5.5.110.0030.09517.31
5.5.100.0130.09117.29
5.5.90.0050.10617.11
5.5.80.0100.07217.23
5.5.70.0100.09017.20
5.5.60.0020.08817.13
5.5.50.0080.09517.14
5.5.40.0100.09817.12
5.5.30.0100.10317.27
5.5.20.0070.07417.01
5.5.10.0150.08317.03
5.5.00.0050.10516.99
5.4.450.0100.09015.26
5.4.440.0050.07715.19
5.4.430.0050.08615.14
5.4.420.0080.09015.22
5.4.410.0080.09915.13
5.4.400.0000.08515.05
5.4.390.0100.09415.17
5.4.380.0050.07815.10
5.4.370.0050.09215.10
5.4.360.0020.07615.12
5.4.350.0020.07614.83
5.4.340.0030.09315.04
5.4.330.0070.07411.24
5.4.320.0070.07315.08
5.4.310.0070.07315.07
5.4.300.0070.08115.04
5.4.290.0050.08215.04
5.4.280.0080.06315.03
5.4.270.0030.10514.99
5.4.260.0120.07015.00
5.4.250.0070.08014.99
5.4.240.0050.09615.06
5.4.230.0030.09115.01
5.4.220.0070.08314.93
5.4.210.0100.09015.01
5.4.200.0020.09415.03
5.4.190.0030.09014.81
5.4.180.0070.09414.85
5.4.170.0030.09415.13
5.4.160.0080.10315.05
5.4.150.0020.07514.96
5.4.140.0080.09613.64
5.4.130.0100.09613.82
5.4.120.0030.07413.70
5.4.110.0000.09513.52
5.4.100.0080.08613.60
5.4.90.0050.08313.66
5.4.80.0030.07813.75
5.4.70.0030.07513.60
5.4.60.0030.07913.67
5.4.50.0030.10813.75
5.4.40.0070.08113.70
5.4.30.0030.09413.67
5.4.20.0080.08313.58
5.4.10.0050.07813.73
5.4.00.0030.09813.43
5.3.290.0020.07612.45
5.3.280.0050.08812.46
5.3.270.0080.08512.56
5.3.260.0120.09712.44
5.3.250.0120.08812.58
5.3.240.0070.09912.42
5.3.230.0020.07812.52
5.3.220.0050.08012.49
5.3.210.0070.07712.40
5.3.200.0050.07312.53
5.3.190.0070.06012.46
5.3.180.0070.08112.62
5.3.170.0030.07412.63
5.3.160.0080.08512.53
5.3.150.0050.07512.62
5.3.140.0050.07812.53
5.3.130.0000.08012.49
5.3.120.0080.07912.58
5.3.110.0050.06012.61
5.3.100.0050.08512.22
5.3.90.0030.09512.25
5.3.80.0100.08712.07
5.3.70.0020.05912.18
5.3.60.0050.04512.24
5.3.50.0020.04612.15
5.3.40.0030.04612.13
5.3.30.0030.02712.10
5.3.20.0060.03412.02
5.3.10.0050.03411.96
5.3.00.0120.03412.00
5.2.170.0100.05313.61
5.2.160.0030.07013.61
5.2.150.0070.06713.61
5.2.140.0100.06713.61
5.2.130.0100.05313.61
5.2.120.0100.04713.61
5.2.110.0070.04013.61
5.2.100.0000.06013.61
5.2.90.0100.06013.61
5.2.80.0030.05713.61
5.2.70.0030.05713.61
5.2.60.0030.05313.61
5.2.50.0170.03313.61
5.2.40.0000.07013.61
5.2.30.0000.03718.59
5.2.20.0130.03718.64
5.2.10.0030.05313.61
5.2.00.0030.07013.61
5.1.60.0130.15013.61
5.1.50.0000.09013.61
5.1.40.0070.09313.61
5.1.30.0000.16013.61
5.1.20.0130.13313.61
5.1.10.0000.09713.61
5.1.00.0030.14013.61
5.0.50.0070.07713.61
5.0.40.0000.07313.61
5.0.30.0000.09013.61
5.0.20.0000.11713.61
5.0.10.0070.12713.61
5.0.00.0030.10713.61
4.4.90.0100.11713.61
4.4.80.0030.03713.68
4.4.70.0030.01713.66
4.4.60.0000.03713.65
4.4.50.0030.10313.61
4.4.40.0000.13313.61
4.4.30.0100.12013.61
4.4.20.0000.10713.61
4.4.10.0000.15313.61
4.4.00.0000.09313.61
4.3.110.0030.07313.61
4.3.100.0000.12713.61
4.3.90.0100.10313.61
4.3.80.0000.07713.61
4.3.70.0000.09713.61
4.3.60.0000.11713.61
4.3.50.0070.12713.61
4.3.40.0100.08013.61
4.3.30.0000.03313.61
4.3.20.0000.03013.61
4.3.10.0030.03313.61
4.3.00.0030.02013.61

preferences:
51.68 ms | 400 KiB | 5 Q