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"; $test_string = 'AAAAAAAAAAAAAA{AA'; echo "2:".preg_replace('/(*UTF8)'.$regex.'/u','WORKED',$test_string)."\n"; $test_string = 'AAAAAAAAAAAAAA{AA'; echo "3:".preg_replace('/'.$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)
8.3.60.0040.01816.88
8.3.50.0130.02022.21
8.3.40.0040.01818.92
8.3.30.0100.01019.01
8.3.20.0070.00420.05
8.3.10.0060.00823.65
8.3.00.0060.00619.38
8.2.180.0100.01318.66
8.2.170.0070.02022.96
8.2.160.0100.02020.56
8.2.150.0030.00824.18
8.2.140.0060.00624.66
8.2.130.0000.01126.16
8.2.120.0000.01122.32
8.2.110.0110.02122.55
8.2.100.0070.01018.09
8.2.90.0030.01019.26
8.2.80.0030.01018.00
8.2.70.0060.00917.88
8.2.60.0040.01118.03
8.2.50.0060.00918.07
8.2.40.0060.01018.15
8.2.30.0030.01018.22
8.2.20.0030.01017.96
8.2.10.0030.01018.04
8.2.00.0060.01318.06
8.1.280.0160.01325.92
8.1.270.0040.00924.10
8.1.260.0070.01026.35
8.1.250.0060.00628.09
8.1.240.0100.00324.09
8.1.230.0030.01317.42
8.1.220.0030.01017.76
8.1.210.0070.00718.77
8.1.200.0030.01217.60
8.1.190.0000.01417.52
8.1.180.0040.01118.10
8.1.170.0030.01018.68
8.1.160.0070.00722.09
8.1.150.0030.01018.99
8.1.140.0040.01117.66
8.1.130.0030.01017.93
8.1.120.0030.01017.83
8.1.110.0030.01217.75
8.1.100.0030.01017.73
8.1.90.0000.01317.77
8.1.80.0070.00717.80
8.1.70.0030.01017.68
8.1.60.0070.00717.82
8.1.50.0030.01217.80
8.1.40.0080.00817.82
8.1.30.0060.00917.84
8.1.20.0000.01417.86
8.1.10.0080.00617.84
8.1.00.0050.01017.71
8.0.300.0030.01018.77
8.0.290.0030.01017.00
8.0.280.0030.01018.49
8.0.270.0040.00817.34
8.0.260.0000.01317.33
8.0.250.0040.00817.38
8.0.240.0030.01017.32
8.0.230.0000.01317.32
8.0.220.0030.01017.23
8.0.210.0000.01317.30
8.0.200.0000.01317.31
8.0.190.0000.01417.19
8.0.180.0000.01417.35
8.0.170.0080.00617.13
8.0.160.0000.01417.31
8.0.150.0030.01017.10
8.0.140.0030.01017.25
8.0.130.0070.00713.69
8.0.120.0000.01417.19
8.0.110.0030.01017.29
8.0.100.0070.00717.37
8.0.90.0070.00717.29
8.0.80.0030.02317.29
8.0.70.0040.01117.04
8.0.60.0000.01417.10
8.0.50.0070.00716.98
8.0.30.0110.01717.30
8.0.20.0100.01917.40
8.0.10.0060.00917.13
8.0.00.0080.02016.93
7.4.330.0000.01115.00
7.4.320.0030.00916.92
7.4.300.0000.01216.87
7.4.290.0000.01416.73
7.4.280.0030.01016.75
7.4.270.0030.01116.71
7.4.260.0000.01316.87
7.4.250.0070.00716.83
7.4.240.0020.01216.89
7.4.230.0030.01016.68
7.4.220.0090.02016.86
7.4.210.0070.02116.89
7.4.200.0060.00916.65
7.4.190.0030.01016.87
7.4.160.0100.02216.75
7.4.150.0070.02117.40
7.4.140.0120.01517.86
7.4.130.0100.01716.71
7.4.120.0060.02016.65
7.4.110.0090.01716.61
7.4.100.0100.02616.74
7.4.90.0100.02216.70
7.4.80.0100.02719.39
7.4.70.0120.01316.79
7.4.60.0100.01716.64
7.4.50.0030.00816.75
7.4.40.0110.01122.77
7.4.30.0130.02316.83
7.4.00.0080.01615.35
7.3.330.0040.00913.28
7.3.320.0080.00613.27
7.3.310.0040.01116.51
7.3.300.0100.00316.60
7.3.290.0100.02416.58
7.3.280.0090.01716.60
7.3.270.0110.02417.40
7.3.260.0090.01816.82
7.3.250.0110.02216.68
7.3.240.0140.02416.74
7.3.230.0130.01616.60
7.3.210.0150.01516.43
7.3.200.0130.01519.39
7.3.190.0070.02016.82
7.3.180.0070.02016.69
7.3.170.0100.01616.43
7.3.160.0040.02316.91
7.3.120.0100.01715.00
7.3.110.0170.01014.98
7.3.100.0110.01115.13
7.3.90.0070.01515.27
7.3.80.0000.02015.18
7.3.70.0030.02015.02
7.3.60.0060.00915.13
7.3.50.0070.02014.92
7.3.40.0040.01115.09
7.3.30.0070.01414.95
7.3.20.0000.02116.84
7.3.10.0120.00916.69
7.3.00.0150.01316.70
7.2.330.0100.01716.70
7.2.320.0120.02516.82
7.2.310.0070.02416.84
7.2.300.0170.01416.69
7.2.290.0060.03216.86
7.2.250.0100.01914.93
7.2.240.0100.00615.17
7.2.230.0000.02015.34
7.2.220.0000.01415.36
7.2.210.0060.01515.16
7.2.200.0000.01715.24
7.2.190.0000.02115.03
7.2.180.0080.01915.22
7.2.170.0000.01914.95
7.2.130.0060.02116.45
7.2.120.0160.01616.29
7.2.110.0120.01616.25
7.2.100.0040.02216.55
7.2.90.0120.01516.47
7.2.80.0120.00916.67
7.2.70.0180.02216.89
7.2.60.0110.01316.61
7.2.50.0140.02416.73
7.2.40.0030.02016.40
7.2.30.0120.01216.32
7.2.20.0070.02016.53
7.2.10.0160.01216.39
7.2.00.0090.01718.40
7.1.330.0100.01015.82
7.1.320.0000.01515.91
7.1.310.0030.01815.83
7.1.300.0040.01916.02
7.1.290.0030.01415.95
7.1.280.0130.00915.86
7.1.270.0110.00615.83
7.1.260.0070.01115.87
7.1.250.0070.01415.31
7.1.200.0120.00615.77
7.1.100.0030.01717.92
7.1.70.0060.00917.46
7.1.60.0070.02619.33
7.1.50.0090.02517.20
7.1.00.0070.08022.53
7.0.200.0130.01614.79
7.0.140.0070.08322.18
7.0.60.0070.04320.03
7.0.50.0030.05317.90
7.0.40.0030.05020.07
7.0.30.0270.07720.14
7.0.20.0300.04320.02
7.0.10.0070.06720.03
7.0.00.0030.05720.13
5.6.210.0100.08720.45
5.6.200.0100.06718.13
5.6.190.0070.09320.64
5.6.180.0170.09020.46
5.6.170.0270.11720.73
5.6.160.0030.11720.52
5.6.150.0100.07718.21
5.6.140.0000.07018.24
5.6.130.0070.10018.14
5.6.120.0130.11721.00
5.6.110.0130.10320.98
5.6.100.0130.11320.97
5.6.90.0070.14321.13
5.6.80.0100.10020.37
5.6.70.2430.05720.52
5.5.350.0170.12720.52
5.5.340.0030.09718.01
5.5.330.0070.13020.46
5.5.320.0370.10720.30
5.5.310.0400.10720.36
5.5.300.0030.12318.00
5.5.290.0100.10017.95
5.5.280.0100.11320.89
5.5.270.0000.13320.96
5.5.260.0070.12020.77
5.5.250.0200.10020.44
5.5.240.0270.11020.18
5.4.450.0230.11319.61
5.4.440.0770.10019.55
5.4.430.0770.13319.26
5.4.420.0530.10019.27
5.4.410.0930.09718.99
5.4.400.0270.14018.80
5.4.390.0530.09719.14
5.4.380.0300.13718.65
5.4.370.0430.11718.48
5.4.360.0300.09318.75
5.4.350.0330.09718.74
5.4.340.0300.13718.48
5.4.320.0080.07012.48
5.4.310.0050.06812.48
5.4.300.0050.06712.48
5.4.290.0100.06312.48
5.4.280.0100.10212.36
5.4.270.0100.09812.36
5.4.260.0120.09612.36
5.4.250.0140.09812.36
5.4.240.0090.11312.36
5.4.230.0090.10712.36
5.4.220.0170.15212.36
5.4.210.0110.11312.35
5.4.200.0100.11212.35
5.4.190.0090.08012.35
5.4.180.0060.09312.35
5.4.170.0100.09412.36
5.4.160.0190.15112.35
5.4.150.0110.10312.35
5.4.140.0090.12312.03
5.4.130.0090.10212.02
5.4.120.0100.10212.00
5.4.110.0080.09612.00
5.4.100.0090.08812.00
5.4.90.0090.09212.00
5.4.80.0170.14812.00
5.4.70.0030.13712.00
5.4.60.0060.08611.99
5.4.50.0080.12011.99
5.4.40.0090.10011.98
5.4.30.0130.12411.98
5.4.20.0140.10711.98
5.4.10.0100.11311.98
5.4.00.0070.12311.45
5.3.290.0060.07112.80
5.3.280.0120.10112.71
5.3.270.0080.10612.73
5.3.260.0110.10312.72
5.3.250.0090.10012.72
5.3.240.0060.10212.72
5.3.230.0150.08412.71
5.3.220.0070.06812.68
5.3.210.0120.08312.68
5.3.200.0050.08212.68
5.3.190.0080.08612.68
5.3.180.0110.07812.67
5.3.170.0120.07712.67
5.3.160.0080.07612.67
5.3.150.0080.06712.67
5.3.140.0070.06812.66
5.3.130.0060.07412.66
5.3.120.0070.07712.66
5.3.110.0090.06712.65
5.3.100.0080.06412.12
5.3.90.0050.06812.08
5.3.80.0070.06712.07
5.3.70.0060.06612.08
5.3.60.0100.05212.06
5.3.50.0070.04012.00
5.3.40.0080.04012.00
5.3.30.0070.04011.96
5.3.20.0050.04511.75
5.3.10.0060.04011.70
5.3.00.0130.04411.70
5.2.170.0040.0349.19
5.2.160.0050.0489.19
5.2.150.0100.0319.19
5.2.140.0130.0489.19
5.2.130.0100.0419.14
5.2.120.0060.0429.14
5.2.110.0090.0409.15
5.2.100.0040.0459.15
5.2.90.0100.0389.14
5.2.80.0040.0459.14
5.2.70.0050.0349.14
5.2.60.0050.0329.10
5.2.50.0050.0329.07
5.2.40.0060.0299.07
5.2.30.0100.02716.91
5.2.20.0100.03016.90
5.2.10.0020.0348.94
5.2.00.0050.0338.80
5.1.60.0070.0778.10
5.1.50.0060.1008.09
5.1.40.0080.0978.08
5.1.30.0060.1018.43
5.1.20.0070.0938.45
5.1.10.0050.0938.17
5.1.00.0050.0938.17
5.0.50.0050.0856.64
5.0.40.0060.0796.50
5.0.30.0060.0916.32
5.0.20.0050.0776.29
5.0.10.0050.0786.27
5.0.00.0040.0906.26
4.4.90.0050.0714.78
4.4.80.0060.02412.56
4.4.70.0090.01812.55
4.4.60.0050.01712.56
4.4.50.0090.0834.77
4.4.40.0050.0954.70
4.4.30.0010.0874.76
4.4.20.0020.0834.84
4.4.10.0050.0834.85
4.4.00.0040.0874.76
4.3.110.0040.0604.67
4.3.100.0030.0534.66
4.3.90.0060.0504.63
4.3.80.0030.0614.58
4.3.70.0040.0574.63
4.3.60.0050.0634.63
4.3.50.0050.0564.63
4.3.40.0020.0614.54
4.3.30.0010.0173.27
4.3.20.0020.0163.25
4.3.10.0020.0153.21
4.3.00.0230.01310.37

preferences:
62.15 ms | 401 KiB | 5 Q