3v4l.org

run code in 300+ PHP versions simultaneously
<?php $regex = '((?!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)
8.3.40.0120.00418.86
8.3.30.0110.00419.04
8.3.20.0040.00420.25
8.3.10.0080.00023.64
8.3.00.0030.00619.38
8.2.170.0140.00022.96
8.2.160.0130.00020.38
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0000.00826.16
8.2.120.0050.00322.38
8.2.110.0030.00622.34
8.2.100.0060.00618.16
8.2.90.0050.00319.22
8.2.80.0000.00818.05
8.2.70.0060.00317.88
8.2.60.0030.00517.77
8.2.50.0090.00018.07
8.2.40.0000.00918.34
8.2.30.0040.00418.16
8.2.20.0000.00717.97
8.2.10.0080.00018.11
8.2.00.0040.00717.88
8.1.270.0040.00422.14
8.1.260.0080.00026.35
8.1.250.0000.00728.09
8.1.240.0060.00323.83
8.1.230.0090.00319.21
8.1.220.0000.00917.74
8.1.210.0040.00418.77
8.1.200.0000.01017.60
8.1.190.0040.00417.64
8.1.180.0040.00418.10
8.1.170.0030.00618.95
8.1.160.0000.00722.10
8.1.150.0040.00418.92
8.1.140.0000.00817.66
8.1.130.0000.00717.88
8.1.120.0000.00717.72
8.1.110.0070.00317.70
8.1.100.0050.00217.74
8.1.90.0000.00917.74
8.1.80.0040.00417.63
8.1.70.0040.00417.71
8.1.60.0050.00517.86
8.1.50.0000.00817.73
8.1.40.0050.00317.77
8.1.30.0000.00817.93
8.1.20.0040.00417.77
8.1.10.0040.00417.75
8.1.00.0040.00417.74
8.0.300.0040.00418.77
8.0.290.0030.00617.30
8.0.280.0000.00718.47
8.0.270.0000.00717.41
8.0.260.0030.00317.32
8.0.250.0000.00717.27
8.0.240.0030.00317.34
8.0.230.0030.00317.27
8.0.220.0070.00017.13
8.0.210.0030.00317.11
8.0.200.0040.00417.24
8.0.190.0000.00817.31
8.0.180.0040.00417.25
8.0.170.0040.00417.34
8.0.160.0000.00717.19
8.0.150.0000.00917.02
8.0.140.0080.00017.13
8.0.130.0030.00313.66
8.0.120.0080.00017.29
8.0.110.0020.00517.27
8.0.100.0050.00317.11
8.0.90.0000.00717.11
8.0.80.0120.00317.27
8.0.70.0000.00717.27
8.0.60.0030.00517.02
8.0.50.0050.00317.22
8.0.30.0080.01217.35
8.0.20.0150.00717.40
8.0.10.0040.00417.24
8.0.00.0130.00517.08
7.4.330.0050.00015.30
7.4.320.0060.00016.68
7.4.300.0000.00616.91
7.4.290.0030.00316.91
7.4.280.0000.00716.73
7.4.270.0000.00716.86
7.4.260.0000.00816.78
7.4.250.0040.00416.79
7.4.240.0050.00316.82
7.4.230.0040.00416.71
7.4.220.0070.01016.88
7.4.210.0100.00716.79
7.4.200.0000.00716.78
7.4.190.0070.00016.67
7.4.160.0120.00416.82
7.4.150.0030.01317.40
7.4.140.0070.01017.86
7.4.130.0050.01216.72
7.4.120.0160.00316.71
7.4.110.0070.01016.86
7.4.100.0000.01816.63
7.4.90.0120.00616.51
7.4.80.0070.01419.39
7.4.70.0090.00916.89
7.4.60.0060.01616.84
7.4.50.0040.00416.75
7.4.40.0000.01422.77
7.4.30.0110.00516.77
7.4.00.0090.00615.43
7.3.330.0030.00313.31
7.3.320.0000.00613.28
7.3.310.0080.00016.62
7.3.300.0070.00016.45
7.3.290.0060.01016.61
7.3.280.0090.01116.57
7.3.270.0060.01117.40
7.3.260.0140.00516.75
7.3.250.0130.00816.51
7.3.240.0140.00316.82
7.3.230.0080.00816.75
7.3.210.0060.01016.68
7.3.200.0120.00619.39
7.3.190.0120.00616.62
7.3.180.0110.00816.66
7.3.170.0100.00616.79
7.3.160.0090.00616.67
7.3.120.0030.01015.09
7.3.10.0090.00916.28
7.3.00.0170.00716.46
7.2.330.0050.01416.71
7.2.320.0100.01016.70
7.2.310.0140.00416.73
7.2.300.0080.00816.94
7.2.290.0140.00316.67
7.2.130.0140.00716.28
7.2.120.0190.01016.82
7.2.110.0180.00616.52
7.2.100.0210.00716.88
7.2.90.0120.01216.73
7.2.80.0190.01116.44
7.2.70.0190.00916.66
7.2.60.0110.01716.93
7.2.50.0170.00316.48
7.2.40.0160.00316.82
7.2.30.0120.01216.83
7.2.20.0150.00716.47
7.2.10.0070.01116.61
7.2.00.0070.00818.21
7.1.250.0140.00715.52
7.1.200.0000.01216.00
7.1.100.0070.01018.37
7.1.70.0190.00717.24
7.1.60.0060.01919.33
7.1.50.0100.01317.23
7.1.00.0000.07722.36
7.0.200.0130.01014.52
7.0.140.0030.07322.12
7.0.60.0070.04319.90
7.0.50.0130.06317.80
7.0.40.0070.05020.27
7.0.30.0300.07720.11
7.0.20.0200.05020.14
7.0.10.0070.09020.18
7.0.00.0070.07320.11
5.6.210.0100.08320.47
5.6.200.0000.06018.13
5.6.190.0070.05020.37
5.6.180.2630.03720.30
5.6.170.0170.08320.63
5.6.160.0130.03720.52
5.6.150.0030.05718.16
5.6.140.0070.08318.19
5.6.130.0130.05018.11
5.6.120.0070.03720.93
5.6.110.0030.07321.04
5.6.100.0070.07721.08
5.6.90.0100.06721.00
5.6.80.0070.03720.51
5.5.350.0170.07320.47
5.5.340.0100.04017.88
5.5.330.0030.05320.41
5.5.320.0300.05020.14
5.5.310.0100.04320.21
5.5.300.0170.07318.07
5.5.290.0230.03717.93
5.5.280.0130.07720.79
5.5.270.0130.03320.63
5.5.260.0070.05720.67
5.5.250.0100.03320.58
5.5.240.0170.07720.11
5.4.450.0670.04719.15
5.4.440.0900.04319.12
5.4.430.0830.04019.42
5.4.420.0300.03719.46
5.4.410.0730.04319.29
5.4.400.1070.04018.95
5.4.390.0230.03318.93
5.4.380.0300.05718.50
5.4.370.0430.05318.73
5.4.360.0330.05318.63
5.4.350.0470.06318.57
5.4.340.0300.05718.63
5.4.320.0090.04112.46
5.4.310.0080.04512.47
5.4.300.0060.03912.47
5.4.290.0060.03912.46
5.4.280.0050.03712.34
5.4.270.0100.03312.34
5.4.260.0080.04312.34
5.4.250.0080.04212.35
5.4.240.0120.04212.34
5.4.230.0100.04512.34
5.4.220.0120.03312.34
5.4.210.0080.03512.34
5.4.200.0060.05112.34
5.4.190.0050.04012.34
5.4.180.0090.03312.34
5.4.170.0060.03712.34
5.4.160.0090.04112.34
5.4.150.0050.03812.34
5.4.140.0050.04012.02
5.4.130.0080.03412.00
5.4.120.0090.03711.98
5.4.110.0100.04011.97
5.4.100.0110.04911.97
5.4.90.0100.05211.97
5.4.80.0060.05511.97
5.4.70.0060.03611.96
5.4.60.0070.03911.96
5.4.50.0110.03211.96
5.4.40.0090.05111.95
5.4.30.0060.03711.95
5.4.20.0070.03811.95
5.4.10.0080.03711.95
5.4.00.0070.03811.43
5.3.290.0060.05012.80
5.3.280.0200.08312.71
5.3.270.0260.10012.72
5.3.260.0130.06412.72
5.3.250.0090.04312.72
5.3.240.0060.05812.72
5.3.230.0100.04012.71
5.3.220.0110.06412.68
5.3.210.0070.05612.68
5.3.200.0080.05312.68
5.3.190.0100.05112.68
5.3.180.0080.03912.68
5.3.170.0140.05012.67
5.3.160.0090.05312.68
5.3.150.0110.05112.68
5.3.140.0080.03812.66
5.3.130.0080.05012.65
5.3.120.0090.03812.66
5.3.110.0060.03912.66
5.3.100.0060.03912.12
5.3.90.0060.03712.09
5.3.80.0050.04012.07
5.3.70.0070.04112.07
5.3.60.0090.05112.07
5.3.50.0070.03912.00
5.3.40.0110.03312.00
5.3.30.0070.03611.94
5.3.20.0070.03811.73
5.3.10.0090.03211.69
5.3.00.0130.03811.68
5.2.170.0070.0359.17
5.2.160.0090.0289.17
5.2.150.0060.0309.17
5.2.140.0040.0329.16
5.2.130.0050.0309.12
5.2.120.0040.0319.13
5.2.110.0060.0319.13
5.2.100.0050.0329.13
5.2.90.0070.0389.13
5.2.80.0080.0379.13
5.2.70.0040.0469.12
5.2.60.0040.0359.09
5.2.50.0080.0289.06
5.2.40.0040.0339.05
5.2.30.0070.0289.02
5.2.20.0070.0349.00
5.2.10.0050.0308.93
5.2.00.0040.0408.78
5.1.60.0080.0338.07
5.1.50.0040.0338.07
5.1.40.0040.0268.05
5.1.30.0050.0278.40
5.1.20.0050.0288.42
5.1.10.0040.0358.14
5.1.00.0030.0388.14
5.0.50.0060.0296.62
5.0.40.0060.0306.48
5.0.30.0090.0376.29
5.0.20.0070.0266.27
5.0.10.0070.0266.24
5.0.00.0040.0416.23
4.4.90.0020.0194.78
4.4.80.0030.0154.76
4.4.70.0040.0164.75
4.4.60.0050.0144.76
4.4.50.0060.0194.77
4.4.40.0000.0334.70
4.4.30.0030.0164.76
4.4.20.0010.0184.84
4.4.10.0060.0144.85
4.4.00.0030.0274.76
4.3.110.0020.0174.67
4.3.100.0020.0174.66
4.3.90.0040.0184.63
4.3.80.0050.0244.58
4.3.70.0050.0194.63
4.3.60.0030.0174.62
4.3.50.0040.0184.62
4.3.40.0040.0244.54
4.3.30.0020.0173.27
4.3.20.0010.0183.25
4.3.10.0040.0203.22
4.3.00.0000.01713.47

preferences:
40.18 ms | 400 KiB | 5 Q