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)
8.3.60.0100.01016.88
8.3.50.0130.01722.32
8.3.40.0040.01618.82
8.3.30.0110.00719.22
8.3.20.0000.01020.52
8.3.10.0030.00623.79
8.3.00.0090.00319.51
8.2.180.0160.01318.54
8.2.170.0070.01122.96
8.2.160.0090.01320.52
8.2.150.0050.00524.18
8.2.140.0060.00324.66
8.2.130.0110.01426.16
8.2.120.0030.00722.37
8.2.110.0090.00320.60
8.2.100.0070.00718.16
8.2.90.0000.01119.17
8.2.80.0110.00417.97
8.2.70.0040.01117.63
8.2.60.0080.00417.93
8.2.50.0040.00818.07
8.2.40.0030.00818.25
8.2.30.0000.01118.15
8.2.20.0080.00418.01
8.2.10.0040.00818.11
8.2.00.0060.00918.07
8.1.280.0160.00325.92
8.1.270.0040.00822.19
8.1.260.0070.00326.35
8.1.250.0030.00728.09
8.1.240.0120.00923.91
8.1.230.0080.00820.88
8.1.220.0030.00917.91
8.1.210.0100.00318.77
8.1.200.0080.00417.36
8.1.190.0000.01117.40
8.1.180.0000.01118.10
8.1.170.0030.00918.95
8.1.160.0040.00722.16
8.1.150.0000.01118.92
8.1.140.0000.01117.77
8.1.130.0000.01117.79
8.1.120.0040.00717.80
8.1.110.0000.01117.59
8.1.100.0040.00817.69
8.1.90.0060.00617.69
8.1.80.0000.01117.64
8.1.70.0000.01117.69
8.1.60.0090.00917.73
8.1.50.0030.00917.75
8.1.40.0040.00817.83
8.1.30.0000.01217.90
8.1.20.0000.01217.98
8.1.10.0060.00617.80
8.1.00.0040.00717.72
8.0.300.0060.00918.77
8.0.290.0000.01117.13
8.0.280.0030.00718.53
8.0.270.0000.01117.45
8.0.260.0030.00717.41
8.0.250.0040.00817.26
8.0.240.0030.00717.31
8.0.230.0000.01117.33
8.0.220.0030.00817.11
8.0.210.0050.00517.20
8.0.200.0070.00317.16
8.0.190.0000.01117.24
8.0.180.0060.00617.23
8.0.170.0040.00717.15
8.0.160.0040.00817.36
8.0.150.0000.01117.11
8.0.140.0000.01217.04
8.0.130.0060.00313.70
8.0.120.0040.00817.12
8.0.110.0030.00817.14
8.0.100.0040.00817.11
8.0.90.0040.01117.18
8.0.80.0070.01417.20
8.0.70.0000.01117.25
8.0.60.0040.00717.29
8.0.50.0060.00617.25
8.0.30.0150.01017.20
8.0.20.0140.01117.40
8.0.10.0060.00617.29
8.0.00.0100.01517.00
7.4.330.0060.00315.16
7.4.320.0040.00716.89
7.4.300.0000.01016.68
7.4.290.0090.00316.81
7.4.280.0070.00716.68
7.4.270.0000.01016.93
7.4.260.0000.01116.86
7.4.250.0030.01016.84
7.4.240.0040.00616.82
7.4.230.0070.00416.70
7.4.220.0070.01716.81
7.4.210.0120.01316.92
7.4.200.0030.00716.95
7.4.190.0000.01116.83
7.4.160.0050.01616.92
7.4.150.0120.01217.40
7.4.140.0100.01717.86
7.4.130.0090.02116.76
7.4.120.0110.01216.92
7.4.110.0130.01016.81
7.4.100.0120.01316.73
7.4.90.0190.00316.56
7.4.80.0030.02419.39
7.4.70.0140.01816.75
7.4.60.0030.02716.90
7.4.50.0080.00416.68
7.4.40.0040.01822.77
7.4.30.0100.01316.70
7.4.00.0130.00715.23
7.3.330.0000.01013.53
7.3.320.0060.00313.23
7.3.310.0040.00716.49
7.3.300.0050.00516.56
7.3.290.0060.01516.62
7.3.280.0090.01316.61
7.3.270.0140.00917.40
7.3.260.0150.00916.50
7.3.250.0070.01816.53
7.3.240.0100.02216.80
7.3.230.0060.01816.73
7.3.210.0130.01016.52
7.3.200.0060.02519.39
7.3.190.0060.02316.66
7.3.180.0110.01116.84
7.3.170.0030.02016.41
7.3.160.0070.01516.84
7.3.120.0110.01215.06
7.3.110.0130.00915.21
7.3.100.0030.01615.37
7.3.90.0070.01615.17
7.3.80.0030.01614.88
7.3.70.0070.01114.95
7.3.60.0000.01815.12
7.3.50.0030.01614.82
7.3.40.0070.01415.16
7.3.30.0030.01414.86
7.3.20.0060.01216.82
7.3.10.0030.01616.93
7.3.00.0110.00816.98
7.2.330.0130.01316.72
7.2.320.0060.02016.86
7.2.310.0090.01716.79
7.2.300.0070.01617.01
7.2.290.0100.01716.81
7.2.250.0060.01315.10
7.2.240.0070.02015.13
7.2.230.0070.01315.25
7.2.220.0100.01415.22
7.2.210.0040.01415.04
7.2.200.0080.01515.32
7.2.190.0090.00915.13
7.2.180.0030.01715.05
7.2.170.0120.00915.19
7.2.60.0060.01217.11
7.2.00.0030.01519.59
7.1.330.0070.01015.84
7.1.320.0000.02215.73
7.1.310.0100.01015.89
7.1.300.0060.00916.00
7.1.290.0070.01315.67
7.1.280.0070.01015.74
7.1.270.0000.01615.64
7.1.260.0060.01115.83
7.1.200.0200.01915.67
7.1.100.0070.00718.55
7.1.70.0000.02317.34
7.1.60.0070.02719.46
7.1.50.0070.02717.15
7.1.00.0100.07322.33
7.0.200.0030.01016.92
7.0.140.0030.08021.98
7.0.60.0000.10020.03
7.0.50.0070.08717.80
7.0.40.0070.09020.08
7.0.30.0230.08020.14
7.0.20.0330.04320.32
7.0.10.0070.09720.22
7.0.00.0070.04720.05
5.6.280.0100.11721.13
5.6.210.0030.07320.47
5.6.200.0000.07718.10
5.6.190.0100.12720.51
5.6.180.0270.10320.65
5.6.170.0230.12020.63
5.6.160.0030.07720.48
5.6.150.0070.12318.16
5.6.140.0130.12318.09
5.6.130.0070.13318.23
5.6.120.0070.13321.00
5.6.110.0070.13321.04
5.6.100.0200.12320.97
5.6.90.0070.13021.07
5.6.80.0030.08320.36
5.6.70.3500.06020.38
5.5.350.0100.11320.42
5.5.340.0030.13017.94
5.5.330.0030.09320.42
5.5.320.0200.06320.31
5.5.310.0200.07320.28
5.5.300.0030.08317.96
5.5.290.0070.12717.99
5.5.280.0070.09720.87
5.5.270.0130.12020.64
5.5.260.0030.13020.95
5.5.250.0100.06320.46
5.5.240.0230.12020.13
5.4.450.0770.10019.42
5.4.440.0600.14319.46
5.4.430.0670.11719.25
5.4.420.0030.10719.48
5.4.410.0530.14719.50
5.4.400.0800.12719.30
5.4.390.0100.11719.15
5.4.380.0400.09718.67
5.4.370.0300.10318.74
5.4.360.0300.09318.59
5.4.350.0300.11718.61
5.4.340.0270.10318.76
5.4.320.0120.06512.47
5.4.310.0070.07012.47
5.4.300.0060.07712.47
5.4.290.0060.08312.47
5.4.280.0060.08812.36
5.4.270.0070.07112.36
5.4.260.0070.11112.36
5.4.250.0130.10712.35
5.4.240.0090.12612.36
5.4.230.0110.11112.34
5.4.220.0130.11812.35
5.4.210.0100.12012.35
5.4.200.0150.11512.34
5.4.190.0100.11612.34
5.4.180.0140.11512.35
5.4.170.0070.09312.35
5.4.160.0090.09212.34
5.4.150.0080.07912.34
5.4.140.0080.09312.03
5.4.130.0130.11012.02
5.4.120.0110.11111.99
5.4.110.0100.06711.98
5.4.100.0120.10311.98
5.4.90.0120.12811.98
5.4.80.0130.11811.98
5.4.70.0120.10411.98
5.4.60.0130.09611.98
5.4.50.0110.08611.98
5.4.40.0150.07711.97
5.4.30.0060.08411.96
5.4.20.0050.07411.96
5.4.10.0040.09511.96
5.4.00.0030.07311.45
5.3.290.0060.07112.80
5.3.280.0070.08012.71
5.3.270.0080.10512.72
5.3.260.0090.08212.72
5.3.250.0070.07412.72
5.3.240.0110.08112.72
5.3.230.0180.07512.71
5.3.220.0050.09112.68
5.3.210.0080.09812.68
5.3.200.0070.07112.68
5.3.190.0090.06912.68
5.3.180.0070.08012.68
5.3.170.0060.09512.67
5.3.160.0140.10112.67
5.3.150.0190.14712.67
5.3.140.0090.14712.66
5.3.130.0150.14512.66
5.3.120.0100.10412.66
5.3.110.0120.13412.66
5.3.100.0090.12512.12
5.3.90.0100.10912.08
5.3.80.0060.07812.07
5.3.70.0120.10212.08
5.3.60.0060.04612.06
5.3.50.0130.07912.00
5.3.40.0110.04612.00
5.3.30.0120.05111.95
5.3.20.0100.04211.73
5.3.10.0080.04311.70
5.3.00.0120.08711.69
5.2.170.0050.0359.18
5.2.160.0040.0419.17
5.2.150.0090.0349.18
5.2.140.0070.0379.17
5.2.130.0050.0369.13
5.2.120.0060.0489.13
5.2.110.0090.0429.14
5.2.100.0110.0479.14
5.2.90.0080.0489.14
5.2.80.0050.0539.14
5.2.70.0130.0499.13
5.2.60.0110.0619.09
5.2.50.0180.0539.07
5.2.40.0100.0469.05
5.2.30.0110.0489.02
5.2.20.0070.0489.01
5.2.10.0080.0418.93
5.2.00.0060.0478.79
5.1.60.0040.0918.08
5.1.50.0120.1068.07
5.1.40.0080.0998.06
5.1.30.0100.1018.40
5.1.20.0110.0938.43
5.1.10.0070.0798.16
5.1.00.0070.0628.15
5.0.50.0050.0566.63
5.0.40.0060.0536.48
5.0.30.0050.0736.29
5.0.20.0030.0536.27
5.0.10.0060.0516.25
5.0.00.0040.0636.24
4.4.90.0040.0864.78
4.4.80.0100.0844.75
4.4.70.0060.0814.75
4.4.60.0050.0814.75
4.4.50.0050.0774.77
4.4.40.0040.0634.71
4.4.30.0060.0714.76
4.4.20.0030.0504.85
4.4.10.0040.0494.85
4.4.00.0060.0584.76
4.3.110.0040.0554.67
4.3.100.0060.0494.67
4.3.90.0020.0504.63
4.3.80.0040.0704.58
4.3.70.0060.0474.63
4.3.60.0050.0434.63
4.3.50.0100.0734.63
4.3.40.0020.0674.54
4.3.30.0030.0183.27
4.3.20.0060.0163.25
4.3.10.0020.0173.21
4.3.00.0100.01310.30

preferences:
41.51 ms | 401 KiB | 5 Q