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"; $test_string = 'AAAAAAAAAAAAAA{AA'; echo "2:".preg_replace('/'.$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)
8.3.40.0030.02019.03
8.3.30.0100.01019.17
8.3.20.0040.00820.34
8.3.10.0070.00423.63
8.3.00.0040.00819.40
8.2.170.0160.01622.96
8.2.160.0030.01720.48
8.2.150.0070.00424.18
8.2.140.0070.00424.66
8.2.130.0080.00326.16
8.2.120.0080.00322.38
8.2.110.0060.00622.23
8.2.100.0070.01017.97
8.2.90.0040.01119.41
8.2.80.0030.01018.05
8.2.70.0000.01417.88
8.2.60.0030.01018.05
8.2.50.0060.00918.07
8.2.40.0030.01018.09
8.2.30.0030.01118.21
8.2.20.0070.00717.93
8.2.10.0070.00718.09
8.2.00.0030.01718.06
8.1.270.0090.00322.18
8.1.260.0040.00726.35
8.1.250.0040.00728.09
8.1.240.0060.00623.84
8.1.230.0100.01019.17
8.1.220.0000.01317.74
8.1.210.0000.01518.77
8.1.200.0060.00917.38
8.1.190.0000.01417.30
8.1.180.0070.00718.10
8.1.170.0030.01018.77
8.1.160.0070.00722.16
8.1.150.0070.00718.80
8.1.140.0030.01017.73
8.1.130.0030.01018.00
8.1.120.0030.01017.79
8.1.110.0070.01017.70
8.1.100.0000.01317.80
8.1.90.0070.00717.73
8.1.80.0030.01017.76
8.1.70.0030.01017.70
8.1.60.0040.01117.79
8.1.50.0030.01117.86
8.1.40.0000.01417.81
8.1.30.0000.01417.95
8.1.20.0000.01417.82
8.1.10.0030.01217.69
8.1.00.0000.01417.71
8.0.300.0030.01018.77
8.0.290.0000.01317.43
8.0.280.0030.01018.61
8.0.270.0040.00817.33
8.0.260.0040.00817.34
8.0.250.0000.01317.23
8.0.240.0060.00617.23
8.0.230.0000.01317.23
8.0.220.0000.01517.21
8.0.210.0030.01017.18
8.0.200.0030.00917.27
8.0.190.0030.01017.25
8.0.180.0000.01417.27
8.0.170.0000.01417.23
8.0.160.0000.01417.21
8.0.150.0030.01017.20
8.0.140.0000.01417.15
8.0.130.0030.00913.67
8.0.120.0000.01417.22
8.0.110.0040.01117.27
8.0.100.0000.01417.16
8.0.90.0000.01417.25
8.0.80.0030.02417.31
8.0.70.0030.01017.32
8.0.60.0000.01417.04
8.0.50.0030.01217.07
8.0.30.0100.02417.37
8.0.20.0100.02117.40
8.0.10.0030.01017.25
8.0.00.0120.02417.06
7.4.330.0040.00715.00
7.4.320.0030.01016.88
7.4.300.0090.00316.87
7.4.290.0070.00716.80
7.4.280.0030.01016.90
7.4.270.0030.01016.87
7.4.260.0030.01016.89
7.4.250.0000.01516.68
7.4.240.0030.01016.83
7.4.230.0030.01016.86
7.4.220.0000.02816.77
7.4.210.0070.01716.87
7.4.200.0030.01016.98
7.4.190.0000.01316.89
7.4.160.0080.01616.76
7.4.150.0110.01717.40
7.4.140.0090.02517.86
7.4.130.0100.02116.81
7.4.120.0130.01416.70
7.4.110.0120.01616.62
7.4.100.0150.01216.72
7.4.90.0070.02016.57
7.4.80.0150.01919.39
7.4.70.0030.02316.66
7.4.60.0100.01616.78
7.4.50.0040.01616.57
7.4.40.0030.01722.77
7.4.30.0120.01516.82
7.4.10.0090.01614.99
7.4.00.0070.01915.29
7.3.330.0030.00913.35
7.3.320.0000.01213.39
7.3.310.0070.00716.61
7.3.300.0000.01416.47
7.3.290.0100.01916.51
7.3.280.0060.02516.51
7.3.270.0070.02317.40
7.3.260.0190.00816.44
7.3.250.0080.02216.64
7.3.240.0120.01816.77
7.3.230.0100.02316.49
7.3.210.0130.02616.84
7.3.200.0030.02619.39
7.3.190.0060.02916.82
7.3.180.0070.02016.52
7.3.170.0150.02216.83
7.3.160.0130.02016.44
7.3.130.0110.01814.82
7.3.120.0070.01615.26
7.3.110.0030.02715.21
7.3.100.0060.01614.71
7.3.90.0060.01615.07
7.3.80.0060.01214.91
7.3.70.0130.00615.02
7.3.60.0030.01914.70
7.3.50.0030.01714.83
7.3.40.0040.01415.14
7.3.30.0090.01515.11
7.3.20.0070.01316.61
7.3.10.0040.01816.56
7.3.00.0030.02116.93
7.2.330.0090.01816.98
7.2.320.0140.01516.71
7.2.310.0140.01416.93
7.2.300.0100.01616.79
7.2.290.0030.02516.96
7.2.260.0030.02515.25
7.2.250.0070.02215.28
7.2.240.0040.01515.29
7.2.230.0070.02115.33
7.2.220.0100.01715.21
7.2.210.0060.00915.29
7.2.200.0030.02015.32
7.2.190.0070.00715.39
7.2.180.0030.01615.23
7.2.170.0060.01215.27
7.2.160.0030.01515.21
7.2.150.0130.01016.85
7.2.140.0070.01016.97
7.2.130.0030.01917.22
7.2.120.0120.00617.11
7.2.110.0030.01517.02
7.2.100.0070.01017.07
7.2.90.0060.01617.30
7.2.80.0140.01417.18
7.2.70.0040.01517.18
7.2.60.0020.01816.89
7.2.50.0000.01817.02
7.2.40.0030.01317.13
7.2.30.0070.01417.02
7.2.20.0000.02016.92
7.2.10.0130.00916.93
7.2.00.0080.01418.26
7.1.330.0060.01516.04
7.1.320.0070.02015.98
7.1.310.0070.01515.90
7.1.300.0000.02116.03
7.1.290.0030.01216.13
7.1.280.0000.01815.95
7.1.270.0040.01515.80
7.1.260.0000.01716.13
7.1.250.0060.01615.85
7.1.240.0030.01415.89
7.1.230.0000.01815.67
7.1.220.0030.01916.11
7.1.210.0030.02015.96
7.1.200.0050.01816.01
7.1.190.0040.01515.79
7.1.180.0070.01015.77
7.1.170.0030.01315.91
7.1.160.0030.01816.04
7.1.150.0070.01315.73
7.1.140.0070.01316.10
7.1.130.0030.01515.99
7.1.120.0070.01615.97
7.1.110.0030.01715.88
7.1.100.0070.01517.16
7.1.90.0040.01516.17
7.1.80.0070.01416.10
7.1.70.0120.01216.64
7.1.60.0050.01417.69
7.1.50.0070.01816.43
7.1.40.0040.01216.07
7.1.30.0000.01915.87
7.1.20.0060.01616.09
7.1.10.0040.01815.88
7.1.00.0030.05219.29
7.0.330.0100.01315.44
7.0.320.0000.02215.57
7.0.310.0060.01215.79
7.0.300.0060.01215.65
7.0.290.0040.01815.73
7.0.280.0060.01315.38
7.0.270.0040.01215.57
7.0.260.0070.01615.61
7.0.250.0060.01515.61
7.0.240.0040.01415.50
7.0.230.0030.01715.59
7.0.220.0000.02515.63
7.0.210.0060.00915.53
7.0.200.0140.00915.30
7.0.190.0030.01415.59
7.0.180.0030.01715.57
7.0.170.0070.01115.79
7.0.160.0030.01015.30
7.0.150.0000.02115.66
7.0.140.0050.04518.87
7.0.130.0100.00715.53
7.0.120.0000.02615.72
7.0.110.0070.01715.65
7.0.100.0030.01715.48
7.0.90.0030.01715.67
7.0.80.0000.02215.40
7.0.70.0060.00915.64
7.0.60.0040.04317.68
7.0.50.0080.03416.90
7.0.40.0070.05616.85
7.0.30.0130.05017.01
7.0.20.0150.03116.81
7.0.10.0070.03016.88
7.0.00.0050.03916.85
5.6.400.0030.07814.19
5.6.390.0030.07914.27
5.6.380.0070.07314.37
5.6.370.0000.08014.71
5.6.360.0100.07514.73
5.6.350.0060.07514.24
5.6.340.0000.07914.61
5.6.330.0030.08414.63
5.6.320.0000.08314.48
5.6.310.0030.08114.13
5.6.300.0070.07614.52
5.6.290.0070.07214.41
5.6.280.0080.09917.74
5.6.270.0030.08814.72
5.6.260.0030.07414.75
5.6.250.0030.07914.27
5.6.240.0000.08614.17
5.6.230.0000.08114.58
5.6.220.0070.07614.63
5.6.210.0030.07417.40
5.6.200.0130.09116.30
5.6.190.0030.09217.49
5.6.180.0030.07717.38
5.6.170.0150.07617.44
5.6.160.0030.10217.26
5.6.150.0150.07916.27
5.6.140.0050.09016.42
5.6.130.0120.09216.40
5.6.120.0080.09917.68
5.6.110.0030.09917.60
5.6.100.0020.10217.75
5.6.90.0100.09617.83
5.6.80.0080.10817.28
5.6.70.0400.07517.38
5.6.60.0100.08214.37
5.6.50.0030.08314.38
5.6.40.0030.07714.22
5.6.30.0000.08914.14
5.6.20.0070.08014.18
5.6.10.0060.07514.50
5.6.00.0070.07314.39
5.5.380.0070.08514.52
5.5.370.0070.07414.02
5.5.360.0030.08414.14
5.5.350.0080.10117.24
5.5.340.0030.08616.13
5.5.330.0050.08217.26
5.5.320.0150.09217.40
5.5.310.0220.09217.32
5.5.300.0050.08516.19
5.5.290.0070.07716.11
5.5.280.0080.10917.62
5.5.270.0080.09517.57
5.5.260.0080.09417.61
5.5.250.0050.08617.32
5.5.240.0100.08717.18
5.5.230.0000.07714.20
5.5.220.0070.07213.89
5.5.210.0070.07814.38
5.5.200.0100.07614.41
5.5.190.0000.08714.29
5.5.180.0030.08814.34
5.5.170.0030.07714.56
5.5.160.0070.07214.05
5.5.150.0070.07414.32
5.5.140.0030.07714.16
5.5.130.0000.09413.99
5.5.120.0070.07914.22
5.5.110.0070.07614.35
5.5.100.0000.09314.25
5.5.90.0070.07714.13
5.5.80.0070.06914.25
5.5.70.0030.08013.89
5.5.60.0030.07314.29
5.5.50.0100.06813.88
5.5.40.0000.08114.18
5.5.30.0030.07514.36
5.5.20.0030.08814.31
5.5.10.0100.07914.08
5.5.00.0130.06813.83
5.4.450.0470.10215.09
5.4.440.0120.09015.40
5.4.430.0120.08415.20
5.4.420.0100.09115.21
5.4.410.0130.10015.20
5.4.400.0170.07815.01
5.4.390.0150.09315.06
5.4.380.0550.08914.95
5.4.370.0500.09714.74
5.4.360.0450.09114.79
5.4.350.0450.10514.91
5.4.340.0480.10914.99
5.4.330.0030.07710.86
5.4.320.0070.07111.75
5.4.310.0060.08011.73
5.4.300.0020.07211.91
5.4.290.0050.07511.76
5.4.280.0070.07211.70
5.4.270.0040.07011.83
5.4.260.0060.07411.72
5.4.250.0040.08911.64
5.4.240.0040.07811.76
5.4.230.0070.08911.70
5.4.220.0050.07611.71
5.4.210.0070.07611.75
5.4.200.0060.07911.78
5.4.190.0070.06711.68
5.4.180.0050.07111.72
5.4.170.0080.06911.68
5.4.160.0030.07511.53
5.4.150.0050.07611.75
5.4.140.0070.07311.52
5.4.130.0110.07911.54
5.4.120.0080.07311.46
5.4.110.0050.07011.52
5.4.100.0050.08011.58
5.4.90.0060.07411.49
5.4.80.0090.08011.51
5.4.70.0050.09111.49
5.4.60.0070.09311.52
5.4.50.0080.07811.57
5.4.40.0030.08011.48
5.4.30.0070.07511.44
5.4.20.0060.07411.55
5.4.10.0050.08011.51
5.4.00.0060.08111.28
5.3.290.0050.07211.70
5.3.280.0070.07811.54
5.3.270.0060.07611.50
5.3.260.0070.08511.62
5.3.250.0050.06811.58
5.3.240.0070.08111.60
5.3.230.0030.07111.54
5.3.220.0050.06511.60
5.3.210.0040.08311.59
5.3.200.0070.07911.58
5.3.190.0070.06011.63
5.3.180.0040.06511.66
5.3.170.0050.06211.63
5.3.160.0060.06611.63
5.3.150.0050.07211.61
5.3.140.0070.07911.56
5.3.130.0080.07811.47
5.3.120.0070.06511.47
5.3.110.0030.08011.59
5.3.100.0060.08511.34
5.3.90.0080.06711.33
5.3.80.0040.08111.29
5.3.70.0050.07411.23
5.3.60.0050.03211.19
5.3.50.0050.02711.11
5.3.40.0080.02811.19
5.3.30.0070.03311.18
5.3.20.0040.02610.99
5.3.10.0050.02610.97
5.3.00.0090.02411.02
5.2.170.0090.0309.19
5.2.160.0070.0469.19
5.2.150.0060.0369.19
5.2.140.0100.0379.19
5.2.130.0070.0469.15
5.2.120.0070.0359.14
5.2.110.0060.0429.15
5.2.100.0110.0349.14
5.2.90.0040.0369.14
5.2.80.0050.0349.14
5.2.70.0070.0509.14
5.2.60.0060.0349.11
5.2.50.0040.0379.08
5.2.40.0070.0369.06
5.2.30.0130.02916.91
5.2.20.0060.03416.90
5.2.10.0070.0458.94
5.2.00.0040.0338.80
5.1.60.0050.1088.10
5.1.50.0030.1118.09
5.1.40.0040.1268.07
5.1.30.0110.1278.43
5.1.20.0060.1048.45
5.1.10.0040.1118.18
5.1.00.0050.1128.18
5.0.50.0040.1206.65
5.0.40.0060.1246.50
5.0.30.0050.1136.32
5.0.20.0070.1356.29
5.0.10.0050.1146.27
5.0.00.0070.1256.26
4.4.90.0030.0884.77
4.4.80.0050.01812.56
4.4.70.0070.01612.55
4.4.60.0080.01512.55
4.4.50.0040.1064.77
4.4.40.0040.1174.71
4.4.30.0040.1334.76
4.4.20.0020.0974.84
4.4.10.0040.0954.85
4.4.00.0030.1024.76
4.3.110.0030.1034.67
4.3.100.0050.1234.66
4.3.90.0040.1304.63
4.3.80.0050.1154.58
4.3.70.0040.0944.63
4.3.60.0030.0914.63
4.3.50.0070.0874.63
4.3.40.0020.1014.54
4.3.30.0010.0173.27
4.3.20.0030.0153.25
4.3.10.0030.0303.21
4.3.00.0470.01710.37

preferences:
42.74 ms | 400 KiB | 5 Q