3v4l.org

run code in 300+ PHP versions simultaneously
<?php $regex = '/(((?!a).)*)*a\\{/'; $test_string = 'AAAAAAAAAAAAAA{AA'; echo preg_replace($regex,'WORKED',$test_string); echo "\n"; var_dump(preg_match($regex,$test_string));

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)
8.3.60.0150.01218.43
8.3.50.0180.01122.09
8.3.40.0140.01718.96
8.3.30.0130.01619.04
8.3.20.0040.00720.29
8.3.10.0040.00823.56
8.3.00.0040.00819.51
8.2.180.0160.01618.26
8.2.170.0130.01322.96
8.2.160.0030.01720.52
8.2.150.0080.00424.18
8.2.140.0040.00824.66
8.2.130.0060.00626.16
8.2.120.0070.00422.29
8.2.110.0060.00622.10
8.2.100.0120.00618.03
8.2.90.0030.01019.21
8.2.80.0040.01117.97
8.2.70.0090.00917.63
8.2.60.0030.01017.93
8.2.50.0030.01018.07
8.2.40.0000.01318.22
8.2.30.0030.01018.09
8.2.20.0040.01117.89
8.2.10.0000.01418.02
8.2.00.0060.01217.78
8.1.280.0070.01425.92
8.1.270.0040.00823.96
8.1.260.0060.00626.35
8.1.250.0110.00028.09
8.1.240.0030.01023.84
8.1.230.0030.01319.01
8.1.220.0030.01017.79
8.1.210.0090.00618.77
8.1.200.0040.01117.48
8.1.190.0030.01017.39
8.1.180.0100.01018.10
8.1.170.0040.01118.59
8.1.160.0060.00621.97
8.1.150.0030.01018.65
8.1.140.0030.01017.50
8.1.130.0070.00717.89
8.1.120.0000.01317.57
8.1.110.0100.00317.51
8.1.100.0070.00717.57
8.1.90.0000.01317.47
8.1.80.0000.01317.47
8.1.70.0000.01317.42
8.1.60.0040.01117.69
8.1.50.0030.01217.55
8.1.40.0070.00717.64
8.1.30.0030.01217.68
8.1.20.0030.01117.66
8.1.10.0080.00617.66
8.1.00.0030.01017.64
8.0.300.0030.01018.77
8.0.290.0030.01117.05
8.0.280.0030.01018.54
8.0.270.0000.01317.25
8.0.260.0040.00817.19
8.0.250.0030.00917.00
8.0.240.0030.01017.00
8.0.230.0060.00617.04
8.0.220.0060.00616.98
8.0.210.0000.01316.96
8.0.200.0000.01217.05
8.0.190.0000.01517.05
8.0.180.0040.01117.02
8.0.170.0090.00616.98
8.0.160.0070.00716.93
8.0.150.0040.01117.02
8.0.140.0030.01216.85
8.0.130.0000.01113.39
8.0.120.0040.01116.83
8.0.110.0060.00916.86
8.0.100.0030.01016.84
8.0.90.0030.01016.83
8.0.80.0090.01316.93
8.0.70.0070.00717.09
8.0.60.0040.01116.95
8.0.50.0000.01417.00
8.0.30.0090.01817.23
8.0.20.0130.01717.40
8.0.10.0060.00817.13
8.0.00.0110.01516.65
7.4.330.0040.00715.00
7.4.320.0070.00716.64
7.4.300.0060.00616.80
7.4.290.0030.01016.79
7.4.280.0000.01316.74
7.4.270.0040.01016.75
7.4.260.0000.01316.75
7.4.250.0040.01116.61
7.4.240.0020.01116.73
7.4.230.0000.01316.72
7.4.220.0070.02216.69
7.4.210.0050.02116.71
7.4.200.0080.00616.75
7.4.190.0030.01016.69
7.4.160.0040.02216.80
7.4.150.0130.01317.40
7.4.140.0120.02017.86
7.4.130.0110.01816.62
7.4.120.0090.01916.59
7.4.110.0070.02016.72
7.4.100.0120.01616.50
7.4.90.0090.01916.56
7.4.80.0150.02119.39
7.4.70.0120.02416.61
7.4.60.0070.02016.64
7.4.50.0000.01716.53
7.4.40.0030.01722.77
7.4.30.0060.02116.66
7.4.10.0100.01315.12
7.4.00.0050.01915.08
7.3.330.0040.00713.27
7.3.320.0000.01113.13
7.3.310.0000.01416.36
7.3.300.0030.01016.31
7.3.290.0110.01416.28
7.3.280.0090.01616.38
7.3.270.0140.01417.40
7.3.260.0170.02116.35
7.3.250.0110.02116.32
7.3.240.0190.02216.35
7.3.230.0030.02316.39
7.3.210.0130.01316.41
7.3.200.0030.03519.39
7.3.190.0110.01816.33
7.3.180.0070.01916.34
7.3.170.0120.01516.30
7.3.160.0120.01516.51
7.3.130.0000.02614.84
7.3.120.0040.01914.98
7.3.110.0070.01815.04
7.3.100.0070.01314.75
7.3.90.0030.02015.12
7.3.80.0040.01814.82
7.3.70.0070.01414.72
7.3.60.0070.01315.03
7.3.50.0070.01414.76
7.3.40.0030.01814.70
7.3.30.0060.01315.03
7.3.20.0060.01516.80
7.3.10.0000.02316.61
7.3.00.0040.01816.67
7.2.330.0120.01516.87
7.2.320.0090.01816.70
7.2.310.0030.03416.52
7.2.300.0090.01516.64
7.2.290.0030.02316.48
7.2.260.0030.02715.22
7.2.250.0110.01815.25
7.2.240.0070.01414.90
7.2.230.0100.01015.18
7.2.220.0070.01415.10
7.2.210.0040.01414.88
7.2.200.0070.01014.96
7.2.190.0030.01714.96
7.2.180.0030.01215.17
7.2.170.0060.01615.24
7.2.160.0060.01214.73
7.2.150.0030.01616.98
7.2.140.0030.01316.97
7.2.130.0090.01217.02
7.2.120.0030.01416.86
7.2.110.0030.01616.85
7.2.100.0030.01416.77
7.2.90.0030.01616.80
7.2.80.0050.01316.71
7.2.70.0100.01017.21
7.2.60.0040.01717.04
7.2.50.0060.01317.00
7.2.40.0000.02216.71
7.2.30.0070.01716.81
7.2.20.0000.02616.71
7.2.10.0070.02016.75
7.2.00.0050.01518.15
7.1.330.0100.01315.63
7.1.320.0030.01215.79
7.1.310.0130.00616.10
7.1.300.0070.01016.11
7.1.290.0070.01115.59
7.1.280.0030.01315.81
7.1.270.0040.01516.08
7.1.260.0100.01315.74
7.1.250.0030.01516.03
7.1.240.0030.01715.79
7.1.230.0000.01415.81
7.1.220.0000.02715.82
7.1.210.0030.01816.01
7.1.200.0080.01115.89
7.1.190.0040.01916.01
7.1.180.0070.01016.01
7.1.170.0000.02015.58
7.1.160.0060.01515.54
7.1.150.0060.01815.86
7.1.140.0030.02315.68
7.1.130.0030.01716.04
7.1.120.0000.02015.83
7.1.110.0040.01815.96
7.1.100.0020.02217.10
7.1.90.0030.01715.85
7.1.80.0060.01015.98
7.1.70.0060.02116.61
7.1.60.0080.02017.61
7.1.50.0080.01616.40
7.1.40.0100.01015.82
7.1.30.0070.01715.82
7.1.20.0040.01516.03
7.1.10.0000.01815.97
7.1.00.0080.04819.16
7.0.330.0060.01215.39
7.0.320.0060.01915.42
7.0.310.0070.01415.36
7.0.300.0000.02015.56
7.0.290.0120.00615.61
7.0.280.0060.01915.73
7.0.270.0060.00915.23
7.0.260.0120.01515.34
7.0.250.0100.02015.63
7.0.240.0000.01815.59
7.0.230.0000.02015.71
7.0.220.0000.01715.36
7.0.210.0000.01915.44
7.0.200.0150.01415.37
7.0.190.0030.01415.39
7.0.180.0030.01515.45
7.0.170.0100.01015.71
7.0.160.0030.01715.52
7.0.150.0000.01615.62
7.0.140.0050.04418.69
7.0.130.0070.01115.38
7.0.120.0040.01115.27
7.0.110.0030.01215.73
7.0.100.0040.01815.57
7.0.90.0000.02115.20
7.0.80.0060.01315.66
7.0.70.0000.01815.63
7.0.60.0110.04317.59
7.0.50.0080.04116.64
7.0.40.0070.03016.91
7.0.30.0240.03116.91
7.0.20.0100.05016.91
7.0.10.0050.04716.91
7.0.00.0070.04516.86
5.6.400.0000.08314.13
5.6.390.0070.07014.44
5.6.380.0070.07314.25
5.6.370.0030.07314.46
5.6.360.0000.07914.17
5.6.350.0000.08214.45
5.6.340.0100.07714.04
5.6.330.0070.07314.59
5.6.320.0070.08214.01
5.6.310.0000.08114.27
5.6.300.0000.07714.25
5.6.290.0070.07614.47
5.6.280.0030.10317.79
5.6.270.0030.07814.51
5.6.260.0030.07914.75
5.6.250.0070.07314.38
5.6.240.0030.07614.54
5.6.230.0000.08614.17
5.6.220.0070.07614.40
5.6.210.0050.09617.43
5.6.200.0050.07716.37
5.6.190.0070.09017.36
5.6.180.0180.08617.55
5.6.170.0150.07717.28
5.6.160.0050.08817.42
5.6.150.0030.10016.20
5.6.140.0070.08516.16
5.6.130.0030.07216.25
5.6.120.0130.09917.75
5.6.110.0050.07317.54
5.6.100.0120.08817.56
5.6.90.0130.09817.61
5.6.80.0030.09117.25
5.6.70.0030.07614.33
5.6.60.0000.08614.14
5.6.50.0030.08014.27
5.6.40.0070.07114.31
5.6.30.0070.08214.20
5.6.20.0000.10014.07
5.6.10.0030.09014.16
5.6.00.0030.07914.39
5.5.380.0070.07414.08
5.5.370.0100.06614.41
5.5.360.0070.07313.92
5.5.350.0030.10417.39
5.5.340.0050.08816.05
5.5.330.0070.09317.30
5.5.320.0260.09117.42
5.5.310.0130.06517.24
5.5.300.0050.09616.16
5.5.290.0080.10116.19
5.5.280.0050.09217.56
5.5.270.0030.07417.53
5.5.260.0100.08617.56
5.5.250.0070.09917.52
5.5.240.0180.07617.28
5.5.230.0030.07614.25
5.5.220.0060.06813.94
5.5.210.0100.07414.25
5.5.200.0070.07414.18
5.5.190.0070.07214.39
5.5.180.0070.06914.30
5.5.170.0030.07814.24
5.5.160.0030.07714.43
5.5.150.0070.06914.26
5.5.140.0000.09414.24
5.5.130.0030.08414.36
5.5.120.0000.09414.36
5.5.110.0070.07214.44
5.5.100.0030.08214.21
5.5.90.0070.08314.29
5.5.80.0070.07914.11
5.5.70.0030.07414.23
5.5.60.0070.06913.99
5.5.50.0070.07313.98
5.5.40.0100.07214.23
5.5.30.0030.08414.15
5.5.20.0030.09514.30
5.5.10.0070.07814.32
5.5.00.0030.08013.97
5.4.450.0150.09216.43
5.4.440.0550.11016.59
5.4.430.0200.08716.57
5.4.420.0720.03816.52
5.4.410.0050.08816.26
5.4.400.0080.09616.02
5.4.390.0150.07916.06
5.4.380.0100.08516.11
5.4.370.0320.08616.09
5.4.360.0170.08416.08
5.4.350.0020.08212.76
5.4.340.0040.06912.75
5.4.330.0000.07513.52
5.4.320.0040.07413.00
5.4.310.0040.06913.00
5.4.300.0060.08312.99
5.4.290.0050.07413.00
5.4.280.0050.10612.93
5.4.270.0040.09012.93
5.4.260.0050.08912.94
5.4.250.0070.08612.94
5.4.240.0080.07612.94
5.4.230.0070.07412.93
5.4.220.0060.07212.93
5.4.210.0070.07512.93
5.4.200.0080.07712.93
5.4.190.0040.08612.93
5.4.180.0050.09112.93
5.4.170.0050.07412.93
5.4.160.0080.07312.93
5.4.150.0140.06812.93
5.4.140.0070.06812.77
5.4.130.0050.08812.77
5.4.120.0080.09612.76
5.4.110.0050.09712.75
5.4.100.0060.09412.75
5.4.90.0070.09412.75
5.4.80.0120.11612.76
5.4.70.0070.10012.75
5.4.60.0070.09912.75
5.4.50.0030.10012.75
5.4.40.0070.08612.75
5.4.30.0080.08212.74
5.4.20.0050.09012.75
5.4.10.0060.08712.74
5.4.00.0060.09912.48
5.3.290.0040.07113.16
5.3.280.0040.09113.11
5.3.270.0050.08913.12
5.3.260.0090.08613.12
5.3.250.0120.09113.12
5.3.240.0090.09113.12
5.3.230.0070.08213.11
5.3.220.0080.06013.10
5.3.210.0040.06613.10
5.3.200.0060.05513.10
5.3.190.0070.06113.09
5.3.180.0090.06813.09
5.3.170.0040.07113.09
5.3.160.0040.06513.09
5.3.150.0060.06213.09
5.3.140.0080.05913.09
5.3.130.0070.07713.09
5.3.120.0020.06913.09
5.3.110.0060.06613.09
5.3.100.0030.07012.82
5.3.90.0070.05512.80
5.3.80.0070.05712.80
5.3.70.0050.05812.80
5.3.60.0050.02512.79
5.3.50.0060.03312.76
5.3.40.0040.03612.76
5.3.30.0060.02512.74
5.3.20.0070.02312.63
5.3.10.0050.02312.61
5.3.00.0030.03012.60
5.2.170.0090.0319.19
5.2.160.0070.0329.19
5.2.150.0070.0339.19
5.2.140.0040.0399.18
5.2.130.0090.0349.14
5.2.120.0060.0339.14
5.2.110.0050.0359.15
5.2.100.0100.0319.15
5.2.90.0050.0619.14
5.2.80.0070.0379.14
5.2.70.0090.0489.14
5.2.60.0050.0489.09
5.2.50.0080.0609.06
5.2.40.0050.0469.05
5.2.30.0140.04216.91
5.2.20.0110.04816.89
5.2.10.0050.0388.94
5.2.00.0050.0478.80
5.1.60.0040.1278.09
5.1.50.0080.1638.09
5.1.40.0100.1748.07
5.1.30.0130.1888.42
5.1.20.0110.1598.45
5.1.10.0230.1938.17
5.1.00.0070.1568.17
5.0.50.0080.1526.65
5.0.40.0040.1446.50
5.0.30.0050.1286.31
5.0.20.0040.1026.29
5.0.10.0040.0996.27
5.0.00.0030.1176.26
4.4.90.0020.0924.77
4.4.80.0260.03612.55
4.4.70.0060.03112.55
4.4.60.0080.02112.55
4.4.50.0090.1064.77
4.4.40.0080.1414.71
4.4.30.0060.1184.76
4.4.20.0040.1184.85
4.4.10.0040.1194.85
4.4.00.0020.1144.76
4.3.110.0060.0944.67
4.3.100.0060.0864.66
4.3.90.0040.0944.63
4.3.80.0060.1244.58
4.3.70.0020.1194.63
4.3.60.0050.0914.62
4.3.50.0030.0974.62
4.3.40.0030.1124.54
4.3.30.0030.0933.32
4.3.20.0020.0833.30
4.3.10.0040.0953.26
4.3.00.0170.1237.88

preferences:
37.84 ms | 401 KiB | 5 Q