3v4l.org

run code in 300+ PHP versions simultaneously
<?php $regex = '(((?!a).)*)*'; $test_string = 'A{A'; echo "1:".mb_ereg_replace($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)
8.3.60.0040.01117.00
8.3.50.0110.01122.21
8.3.40.0040.01419.14
8.3.30.0150.00019.09
8.3.20.0070.00020.52
8.3.10.0000.00823.36
8.3.00.0040.00419.38
8.2.180.0110.00718.33
8.2.170.0110.00322.96
8.2.160.0070.00720.43
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0000.00822.05
8.2.110.0090.00022.50
8.2.100.0080.00417.97
8.2.90.0090.00019.27
8.2.80.0000.00817.97
8.2.70.0040.00417.88
8.2.60.0030.00517.93
8.2.50.0060.00318.07
8.2.40.0050.00318.16
8.2.30.0040.00418.21
8.2.20.0030.00617.87
8.2.10.0040.00418.15
8.2.00.0030.00617.96
8.1.280.0080.00625.92
8.1.270.0080.00022.19
8.1.260.0040.00426.35
8.1.250.0110.00428.09
8.1.240.0030.00624.09
8.1.230.0120.00019.09
8.1.220.0060.00317.80
8.1.210.0040.00418.77
8.1.200.0000.00917.35
8.1.190.0060.00317.53
8.1.180.0000.00818.10
8.1.170.0050.00318.71
8.1.160.0040.00422.16
8.1.150.0000.00818.91
8.1.140.0000.00717.64
8.1.130.0030.00317.96
8.1.120.0070.00017.73
8.1.110.0000.01017.68
8.1.100.0000.00717.75
8.1.90.0040.00417.75
8.1.80.0040.00417.75
8.1.70.0030.00317.69
8.1.60.0060.00317.82
8.1.50.0030.00517.72
8.1.40.0080.00017.80
8.1.30.0000.00817.90
8.1.20.0040.00417.86
8.1.10.0030.00617.80
8.1.00.0080.00017.71
8.0.300.0040.00418.77
8.0.290.0030.00617.30
8.0.280.0070.00018.51
8.0.270.0040.00417.41
8.0.260.0000.00817.36
8.0.250.0030.00317.20
8.0.240.0000.00717.31
8.0.230.0050.00317.27
8.0.220.0000.00717.23
8.0.210.0000.00717.18
8.0.200.0050.00217.35
8.0.190.0050.00317.25
8.0.180.0040.00417.17
8.0.170.0040.00417.17
8.0.160.0000.00717.23
8.0.150.0030.00517.06
8.0.140.0040.00417.21
8.0.130.0000.00613.67
8.0.120.0030.00517.22
8.0.110.0080.00017.21
8.0.100.0000.00817.29
8.0.90.0040.00417.24
8.0.80.0070.01317.27
8.0.70.0070.00017.11
8.0.60.0000.00917.11
8.0.50.0030.00616.97
8.0.30.0180.00317.44
8.0.20.0140.00917.40
8.0.10.0050.00317.02
8.0.00.0100.00917.13
7.4.330.0030.00315.05
7.4.320.0080.00016.88
7.4.300.0000.00616.79
7.4.290.0070.00016.68
7.4.280.0000.00716.89
7.4.270.0000.00716.79
7.4.260.0060.00316.89
7.4.250.0040.00416.85
7.4.240.0030.00416.78
7.4.230.0000.00716.70
7.4.220.0100.00716.97
7.4.210.0070.00716.85
7.4.200.0040.00416.62
7.4.190.0000.00816.85
7.4.160.0100.00716.92
7.4.150.0070.01017.40
7.4.140.0130.00517.86
7.4.130.0160.01416.81
7.4.120.0090.01016.66
7.4.110.0080.00816.76
7.4.100.0070.01416.87
7.4.90.0070.01016.82
7.4.80.0100.01019.39
7.4.70.0070.01116.43
7.4.60.0090.01216.64
7.4.50.0030.00516.72
7.4.40.0030.01022.77
7.4.30.0070.01016.73
7.4.00.0030.01415.27
7.3.330.0050.00013.38
7.3.320.0020.00213.34
7.3.310.0040.00416.63
7.3.300.0000.00716.50
7.3.290.0110.00316.54
7.3.280.0040.01216.61
7.3.270.0100.00717.40
7.3.260.0100.01316.54
7.3.250.0090.01216.46
7.3.240.0110.00916.89
7.3.230.0130.00616.72
7.3.210.0110.00516.73
7.3.200.0070.01519.39
7.3.190.0070.01016.82
7.3.180.0090.00916.47
7.3.170.0090.00616.75
7.3.160.0090.00616.79
7.3.120.0100.00614.99
7.2.330.0030.01616.77
7.2.320.0130.01016.80
7.2.310.0060.01116.84
7.2.300.0120.00616.72
7.2.290.0100.01016.89
7.2.60.0040.01117.00
7.2.00.0030.00919.48
7.1.200.0030.00715.86
7.1.100.0090.00318.24
7.1.70.0040.00717.25
7.1.60.0100.01419.33
7.1.50.0040.01917.38
7.1.00.0030.07722.56
7.0.200.0430.00714.76
7.0.140.0030.06722.09
7.0.60.0130.06719.86
7.0.50.0000.04317.82
7.0.40.0070.06020.34
7.0.30.0270.07720.02
7.0.20.0270.07720.02
7.0.10.0170.07720.22
7.0.00.0070.05320.14
5.6.280.0000.07721.10
5.6.210.0100.05320.50
5.6.200.0130.04718.11
5.6.190.0100.04020.76
5.6.180.0070.06720.56
5.6.170.0430.08020.39
5.6.160.0100.08320.39
5.6.150.0130.07318.13
5.6.140.0100.07718.20
5.6.130.0070.06018.13
5.6.120.0030.04021.09
5.6.110.0030.07320.96
5.6.100.0070.06721.11
5.6.90.0030.09020.97
5.6.80.0070.05720.35
5.6.70.3170.03320.51
5.5.350.0100.06020.42
5.5.340.0070.06317.88
5.5.330.0030.08320.12
5.5.320.0800.05720.34
5.5.310.0370.05020.50
5.5.300.0100.06317.94
5.5.290.0030.04017.88
5.5.280.0100.05720.87
5.5.270.0130.07720.87
5.5.260.0070.06720.89
5.5.250.0270.06020.61
5.5.240.0130.08020.18
5.4.450.0230.05319.49
5.4.440.0900.05719.47
5.4.430.0230.04019.63
5.4.420.0870.05019.32
5.4.410.0770.06719.50
5.4.400.0830.05319.27
5.4.390.1130.06018.95
5.4.380.0430.04018.53
5.4.370.0200.05318.46
5.4.360.0070.07018.66
5.4.350.0370.05018.49
5.4.340.0330.05318.50
5.4.320.0060.03612.46
5.4.310.0040.03912.45
5.4.300.0060.03612.46
5.4.290.0050.03912.46
5.4.280.0080.03612.34
5.4.270.0070.03912.34
5.4.260.0070.03812.34
5.4.250.0090.05212.34
5.4.240.0050.04812.34
5.4.230.0070.06212.33
5.4.220.0080.04012.33
5.4.210.0120.04612.33
5.4.200.0080.05212.33
5.4.190.0060.04512.32
5.4.180.0050.04012.32
5.4.170.0080.03612.33
5.4.160.0040.04012.33
5.4.150.0110.03412.32
5.4.140.0110.03912.01
5.4.130.0050.03812.00
5.4.120.0070.03511.95
5.4.110.0060.05911.95
5.4.100.0090.04511.95
5.4.90.0060.03911.95
5.4.80.0050.03911.95
5.4.70.0040.05011.95
5.4.60.0070.04311.95
5.4.50.0080.03911.95
5.4.40.0080.03411.94
5.4.30.0070.03611.94
5.4.20.0070.03611.94
5.4.10.0080.04111.94
5.4.00.0100.03211.43
5.3.290.0050.04012.80
5.3.280.0080.04812.71
5.3.270.0130.04912.72
5.3.260.0090.04112.72
5.3.250.0070.04012.72
5.3.240.0090.05612.72
5.3.230.0080.04912.71
5.3.220.0090.04012.68
5.3.210.0080.04112.68
5.3.200.0120.04012.68
5.3.190.0080.04212.68
5.3.180.0060.03812.67
5.3.170.0060.03912.67
5.3.160.0080.03912.68
5.3.150.0060.03912.68
5.3.140.0080.03512.66
5.3.130.0110.05112.66
5.3.120.0090.05412.66
5.3.110.0090.05212.66
5.3.100.0080.04812.12
5.3.90.0110.04712.09
5.3.80.0080.04712.07
5.3.70.0090.04312.08
5.3.60.0100.03712.07
5.3.50.0050.03812.00
5.3.40.0160.04612.00
5.3.30.0140.04911.94
5.3.20.0090.05211.72
5.3.10.0060.04311.68
5.3.00.0070.03611.67
5.2.170.0020.0359.16
5.2.160.0050.0319.17
5.2.150.0050.0339.16
5.2.140.0040.0349.16
5.2.130.0040.0339.12
5.2.120.0080.0289.13
5.2.110.0040.0349.13
5.2.100.0040.0369.13
5.2.90.0060.0419.12
5.2.80.0040.0329.13
5.2.70.0070.0399.13
5.2.60.0120.0389.08
5.2.50.0050.0409.05
5.2.40.0110.0319.03
5.2.30.0120.03916.91
5.2.20.0140.03416.90
5.2.10.0090.0358.91
5.2.00.0050.0458.78
5.1.60.0070.0358.06
5.1.50.0090.0288.06
5.1.40.0100.0268.04
5.1.30.0130.0338.39
5.1.20.0180.0618.41
5.1.10.0070.0458.14
5.1.00.0070.0448.14
5.0.50.0080.0246.61
5.0.40.0070.0276.48
5.0.30.0050.0416.29
5.0.20.0050.0246.26
5.0.10.0080.0276.23
5.0.00.0080.0366.22
4.4.90.0050.0184.78
4.4.80.0130.02112.55
4.4.70.0090.02312.55
4.4.60.0070.02412.56
4.4.50.0030.0244.77
4.4.40.0050.0354.71
4.4.30.0060.0194.76
4.4.20.0040.0244.84
4.4.10.0040.0244.85
4.4.00.0030.0324.75
4.3.110.0050.0234.67
4.3.100.0060.0234.67
4.3.90.0040.0234.64
4.3.80.0060.0324.59
4.3.70.0050.0214.63
4.3.60.0020.0244.63
4.3.50.0040.0234.63
4.3.40.0040.0354.54
4.3.30.0020.0223.27
4.3.20.0030.0203.25
4.3.10.0020.0233.21
4.3.00.0270.01710.37

preferences:
40.17 ms | 401 KiB | 5 Q