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"; $test_string = 'AAAAAAAAAAAAAA{AA'; echo "2:".preg_replace('/(*UCP)'.$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)
8.3.60.0130.02018.93
8.3.50.0060.02022.14
8.3.40.0110.01518.92
8.3.30.0100.01718.97
8.3.20.0040.00820.41
8.3.10.0060.00623.65
8.3.00.0030.00919.38
8.2.180.0070.02018.51
8.2.170.0030.01722.96
8.2.160.0150.00620.52
8.2.150.0000.01124.18
8.2.140.0060.00624.66
8.2.130.0040.00826.16
8.2.120.0030.00922.42
8.2.110.0030.01022.21
8.2.100.0000.01818.16
8.2.90.0030.01219.21
8.2.80.0000.01418.05
8.2.70.0080.00817.75
8.2.60.0060.00917.93
8.2.50.0070.00718.07
8.2.40.0060.00818.34
8.2.30.0030.01018.18
8.2.20.0040.01118.03
8.2.10.0040.01118.08
8.2.00.0000.01918.04
8.1.280.0100.01725.92
8.1.270.0080.00422.14
8.1.260.0000.01126.35
8.1.250.0040.00728.09
8.1.240.0060.00624.02
8.1.230.0090.00919.13
8.1.220.0040.01117.79
8.1.210.0030.01018.77
8.1.200.0090.00617.60
8.1.190.0050.00817.52
8.1.180.0040.01118.10
8.1.170.0040.01118.90
8.1.160.0070.00722.16
8.1.150.0000.01418.87
8.1.140.0030.01017.78
8.1.130.0030.01017.92
8.1.120.0030.01017.68
8.1.110.0070.01017.73
8.1.100.0000.01317.78
8.1.90.0030.01017.70
8.1.80.0080.00617.74
8.1.70.0030.01017.65
8.1.60.0040.01117.86
8.1.50.0080.00617.82
8.1.40.0060.00917.85
8.1.30.0000.01517.89
8.1.20.0030.01017.91
8.1.10.0040.01117.84
8.1.00.0060.00917.72
8.0.300.0000.01318.77
8.0.290.0000.01317.30
8.0.280.0060.00618.59
8.0.270.0070.00717.41
8.0.260.0000.01317.45
8.0.250.0000.01217.18
8.0.240.0000.01417.32
8.0.230.0030.01017.35
8.0.220.0000.01417.18
8.0.210.0070.00717.30
8.0.200.0030.00917.19
8.0.190.0090.00617.33
8.0.180.0000.01417.27
8.0.170.0030.01117.24
8.0.160.0000.01417.23
8.0.150.0060.00817.20
8.0.140.0000.01317.20
8.0.130.0030.01013.69
8.0.120.0060.00917.21
8.0.110.0040.01117.15
8.0.100.0070.00717.26
8.0.90.0030.01017.08
8.0.80.0060.01817.37
8.0.70.0030.01017.10
8.0.60.0030.01017.19
8.0.50.0060.00917.07
8.0.30.0090.01917.18
8.0.20.0120.02017.41
8.0.10.0030.01017.02
8.0.00.0130.02516.93
7.4.330.0040.00715.00
7.4.320.0000.01216.89
7.4.300.0000.01316.81
7.4.290.0080.00516.81
7.4.280.0070.00716.80
7.4.270.0000.01316.68
7.4.260.0000.01416.88
7.4.250.0000.01316.69
7.4.240.0030.01116.80
7.4.230.0030.01016.71
7.4.220.0030.02817.00
7.4.210.0080.01616.84
7.4.200.0030.01016.98
7.4.190.0030.01016.98
7.4.160.0130.01316.54
7.4.150.0120.01517.40
7.4.140.0100.02217.86
7.4.130.0100.01616.68
7.4.120.0150.01216.76
7.4.110.0190.01016.50
7.4.100.0110.01516.57
7.4.90.0120.01516.84
7.4.80.0150.02419.39
7.4.70.0150.01216.83
7.4.60.0140.02116.73
7.4.50.0030.01416.92
7.4.40.0030.01922.77
7.4.30.0100.01716.59
7.4.00.0100.01315.06
7.3.330.0000.01213.48
7.3.320.0000.01313.46
7.3.310.0080.00616.49
7.3.300.0040.00816.55
7.3.290.0100.01316.51
7.3.280.0090.01916.57
7.3.270.0160.01217.40
7.3.260.0090.01916.38
7.3.250.0120.01616.50
7.3.240.0070.02216.55
7.3.230.0070.02116.39
7.3.210.0120.01516.77
7.3.200.0100.02419.39
7.3.190.0100.02816.29
7.3.180.0060.01916.33
7.3.170.0120.01516.67
7.3.160.0100.01616.64
7.3.120.0070.01815.11
7.2.330.0100.01716.77
7.2.320.0030.02616.66
7.2.310.0190.01616.78
7.2.300.0060.02116.58
7.2.290.0130.02416.90
7.2.60.0000.01917.09
7.2.00.0100.01319.78
7.1.200.0060.01315.64
7.1.100.0030.01618.00
7.1.70.0090.00917.01
7.1.60.0070.02419.33
7.1.50.0060.02917.19
7.1.00.0030.08722.33
7.0.200.0130.01315.13
7.0.140.0030.08722.21
7.0.60.0130.04320.02
7.0.50.0100.08717.83
7.0.40.0100.09320.23
7.0.30.0270.08320.14
7.0.20.0370.07720.21
7.0.10.0070.04720.23
7.0.00.0100.08320.05
5.6.280.0070.12320.99
5.6.210.0070.07320.72
5.6.200.0070.12018.20
5.6.190.0070.07020.46
5.6.180.0100.12720.42
5.6.170.0270.11020.43
5.6.160.0070.10720.55
5.6.150.0100.06318.25
5.6.140.0030.07018.18
5.6.130.0030.10018.17
5.6.120.0100.11721.05
5.6.110.0030.09321.02
5.6.100.0070.12721.13
5.6.90.0000.10721.10
5.6.80.0070.12020.37
5.6.70.2570.05720.35
5.5.350.0200.11320.43
5.5.340.0000.07717.93
5.5.330.0100.13020.30
5.5.320.0300.09320.30
5.5.310.0270.12720.33
5.5.300.0000.07317.93
5.5.290.0070.11717.97
5.5.280.0070.09020.77
5.5.270.0200.10720.96
5.5.260.0270.09720.72
5.5.250.0100.10020.65
5.5.240.0200.11320.19
5.4.450.0800.09319.57
5.4.440.0800.11719.52
5.4.430.0770.08319.43
5.4.420.1170.11019.63
5.4.410.1170.09719.37
5.4.400.0930.12719.18
5.4.390.1670.10319.32
5.4.380.2170.14018.68
5.4.370.1130.10018.80
5.4.360.0870.10718.68
5.4.350.1000.10318.64
5.4.340.1030.09018.61
5.4.320.0050.06512.48
5.4.310.0050.07912.48
5.4.300.0050.07112.48
5.4.290.0070.08212.48
5.4.280.0090.10112.36
5.4.270.0090.10212.36
5.4.260.0060.08112.36
5.4.250.0040.08312.37
5.4.240.0070.07612.36
5.4.230.0080.09512.36
5.4.220.0060.07112.35
5.4.210.0040.07212.36
5.4.200.0060.07512.35
5.4.190.0050.06612.35
5.4.180.0060.06812.35
5.4.170.0120.06912.36
5.4.160.0090.06612.35
5.4.150.0030.07412.34
5.4.140.0060.07312.04
5.4.130.0080.08912.02
5.4.120.0240.07212.00
5.4.110.0060.06812.00
5.4.100.0090.06612.00
5.4.90.0110.08512.00
5.4.80.0170.15512.00
5.4.70.0260.13912.00
5.4.60.0110.06512.00
5.4.50.0110.06311.99
5.4.40.0060.07111.98
5.4.30.0100.11111.98
5.4.20.0200.13811.98
5.4.10.0070.07011.98
5.4.00.0060.07811.46
5.3.290.0090.07212.80
5.3.280.0080.08112.71
5.3.270.0160.09812.73
5.3.260.0090.10112.72
5.3.250.0060.07412.72
5.3.240.0160.13912.72
5.3.230.0100.13812.71
5.3.220.0180.10012.68
5.3.210.0130.09412.68
5.3.200.0080.10112.68
5.3.190.0070.07912.68
5.3.180.0100.07812.68
5.3.170.0060.07812.67
5.3.160.0120.10912.67
5.3.150.0110.08712.67
5.3.140.0040.07112.66
5.3.130.0120.10612.66
5.3.120.0090.08612.66
5.3.110.0110.11412.66
5.3.100.0140.10312.12
5.3.90.0120.11712.09
5.3.80.0100.09312.07
5.3.70.0090.09412.08
5.3.60.0090.05312.07
5.3.50.0110.05012.00
5.3.40.0080.04912.00
5.3.30.0090.04811.96
5.3.20.0070.05111.75
5.3.10.0070.04911.70
5.3.00.0080.05211.69
5.2.170.0070.0469.19
5.2.160.0080.0429.19
5.2.150.0050.0429.19
5.2.140.0100.0399.19
5.2.130.0070.0489.14
5.2.120.0090.0439.14
5.2.110.0100.0369.15
5.2.100.0110.0459.15
5.2.90.0070.0469.14
5.2.80.0100.0439.14
5.2.70.0110.0409.14
5.2.60.0060.0449.11
5.2.50.0070.0429.07
5.2.40.0090.0359.07
5.2.30.0110.03516.91
5.2.20.0070.03116.90
5.2.10.0030.0348.94
5.2.00.0030.0348.80
5.1.60.0070.0838.10
5.1.50.0100.0748.09
5.1.40.0050.0998.08
5.1.30.0090.0978.43
5.1.20.0050.0688.45
5.1.10.0060.0918.18
5.1.00.0070.0758.18
5.0.50.0050.0736.65
5.0.40.0040.0786.51
5.0.30.0070.0996.31
5.0.20.0050.0616.29
5.0.10.0050.0746.27
5.0.00.0080.0866.26
4.4.90.0070.0804.78
4.4.80.0090.02112.56
4.4.70.0080.05012.55
4.4.60.0080.02412.55
4.4.50.0040.0624.77
4.4.40.0050.0914.70
4.4.30.0030.0964.76
4.4.20.0050.0924.84
4.4.10.0060.0854.85
4.4.00.0050.0984.76
4.3.110.0040.0924.67
4.3.100.0090.0874.66
4.3.90.0050.0794.63
4.3.80.0070.0854.58
4.3.70.0060.0754.63
4.3.60.0100.0914.63
4.3.50.0070.0774.63
4.3.40.0050.0714.54
4.3.30.0030.0173.27
4.3.20.0030.0173.25
4.3.10.0020.0183.21
4.3.00.0130.01710.37

preferences:
46.03 ms | 401 KiB | 5 Q